Seg HighPROTEC MRM4 Manual

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PROTECTION MADE SIMPLE.

MRM4

MOTOR PROTECTION

Version: 3.10

Original document

English

MANUAL MRM4-3.10-EN-MAN

Build 62176

Revision B

Table of Contents

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Page 1 PROTECTION MADE SIMPLE. MRM4 MOTOR PROTECTION MOTOR PROTECTION Version: 3.10 Original document English MANUAL MRM4-3.10-EN-MAN Build 62176 Revision B...
Page 2 E-mail: support@SEGelectronics.de   SEG Electronics GmbH reserves the right to update any portion of this publication at any time. Information provided by SEG Electronics GmbH is believed to be correct and reliable. However, no responsibility is assumed by SEG Electronics GmbH unless otherwise expressly undertaken.
Page 3: Table Of Contents
Table of Contents Table of Contents Safety Messages and Proper Use of the MRM4 ........13█...
Page 4 Table of Contents 2.4.2 Passwords ..............63█...
Page 5 Table of Contents 3.5.4.1 Sensitive Ground Current Measurement ..........115█...
Page 6 Table of Contents 4.5.5 Data-Point Mapping Using the SCADApter ..........177█...
Page 7 Table of Contents 5.5.1 Commissioning: Mechanical Load Shedding ......... . . 229█...
Page 8 Table of Contents 5.14.2 TCS - Trip Circuit Supervision [74TC] ..........309█...
Page 9 Table of Contents Disturbance Recorder ............358█...
Page 10 Table of Contents Servicing and Maintenance ........... . . 403█...
Page 11 Table of Contents 13.3.2 Specifications of the Measured Value Acquisition ........418█...
Page 12 Table of Contents 14.6 Revision History ..............464█...
Page 13: Safety Messages And Proper Use Of The Mrm4
1 Safety Messages and Proper Use of the MRM4 1.1 Important Definitions Safety Messages and Proper Use of the MRM4 Important Definitions The types of messages shown below serve the safety of life and limb as well as for the appropriate operating life of the device.
Page 14 1 Safety Messages and Proper Use of the MRM4 1.1 Important Definitions WARNING! Caution Sensitive Current Inputs This variant of the MRM4 features sensitive inputs for measuring the ground (earth) current. (These are marked by an asterisk “*”.) The technical data of the sensitive ground (earth) measuring input are different from the technical data of the phase current measuring inputs.
Page 15: Proper Use Of The Device And Of This Manual
1 Safety Messages and Proper Use of the MRM4 1.2 Proper Use of the Device and of This Manual Proper Use of the Device and of This Manual CAUTION! Do not put the MRM4 in service until it has been configured and commissioned. Read the User Manual.
Page 16 The manufacturer cannot be held liable for any resulting damage, the user alone bears the risk for this. As to the appropriate use of the device: The technical data and tolerances specified by SEG have to be met. MRM4...
Page 17 1 Safety Messages and Proper Use of the MRM4 1.2 Proper Use of the Device and of This Manual WARNING! Ensure that the actual overcurrent settings comply with the technical and thermal limits of the device, the CTs and the application! The MRM4 allows for overcurrent settings that are out of the permitted range of current values.
Page 18: Personal Safety
1 Safety Messages and Proper Use of the MRM4 1.3 Personal Safety Personal Safety DANGER! Ignoring the following safety messages can result in death or serious injury or physical damage. DANGER! Only qualified electricians may install, commission, work or operate this device. All national standards –...
Page 19: Important Information
1 Safety Messages and Proper Use of the MRM4 1.4 Important Information Important Information NOTICE! The devices are manufactured and delivered according to the order code specified by the customer. The terminal assignment of the device can be found on the top of the device (wiring diagram).
Page 20 1 Safety Messages and Proper Use of the MRM4 1.4 Important Information Out-of-Date Documentation? This publication may have been revised or updated since this copy was produced. To verify that you have the latest revision, please visit the download section of our website: •...
Page 21: Mrm4 - Motor Protection
2 MRM4 – Motor Protection MRM4 – Motor Protection The MRM4 is a protection relay which uses the latest Dual-Core-Processor Technology to provide precise and reliable protective functions and is very easy to operate. The MRM4 provides all necessary functions to protect low and medium voltage motors at all power levels.
Page 22 2 MRM4 – Motor Protection Functional Overview Motor URTD Assembly MRM4 slot 74TC MStart (Measured and calculated values) 48, 66 I< 50Gs 51Gs Recorders: SER (Event), DDR (Disturbance), DFR (Fault), Statistics, Trend, Start rec SG Wear History 62BF 50BF Control AnOut LGC (Programmable Logic) Digital Inputs...
Page 23: Comments On The Manual
(provided by evidence). Information Concerning Liability and Warranty SEG does not accept any liability for damage resulting from conversions or changes carried out on the device or planning (projecting) work, parameter setting or adjustment changes done by the customer.
Page 24 2 MRM4 – Motor Protection 2.1 Comments on the Manual Moreover, there is general information about the delivery scope (↪2.2 Information About the Device) and this manual and the conventions and symbols used here (↪2.1.1 Symbols and Definitions). • A general overview of the protection functions available with the MRM4 can be found •...
Page 25 2 MRM4 – Motor Protection 2.1 Comments on the Manual protection functions, or it can be assigned to any of the LEDs or some output: ↪5.14 Supervision • Commissioning aspects for the MRM4: • ↪11 Commissioning. But note that protection- specific commissioning descriptions are sub-chapters within the respective chapters for the protection functions.
Page 26 2 MRM4 – Motor Protection 2.1 Comments on the Manual ◦ MRM4‑3.10‑EN‑IEC61850-Pixit — IEC 61850 Protocol Implementation Extra ◦ Information for Testing (PIXIT) – [English only] ◦ MRM4‑3.10‑EN‑IEC61850-Tics — IEC 61850 Tissue Implementation ◦ Conformance Statement (TICS) – [English only] MRM4 MRM4-3.10-EN-MAN...
Page 27: Symbols And Definitions
2 MRM4 – Motor Protection 2.1.1 Symbols and Definitions 2.1.1 Symbols and Definitions Connection Diagram that is Printed on the Housing There is a connection (wiring) diagram fixed onto the housing of the MRM4. This diagram shows all terminals for this particular device variant. A table of the symbols that can appear in this diagram can be found here: ↪2.1.1.1 Legend for Wiring Diagrams...
Page 28: Legend For Wiring Diagrams
2 MRM4 – Motor Protection 2.1.1.1 Legend for Wiring Diagrams 2.1.1.1 Legend for Wiring Diagrams In this legend designations of various device types are listed, e. g. transformer protection, motor protection, generator protection, etc. Therefore it can occur that not every designation actually appears on the wiring diagram of your device.
Page 29 2 MRM4 – Motor Protection 2.1.1.1 Legend for Wiring Diagrams Only for use with external galvanic decoupled CTs. See chapter Current Only for use with external galvanic Transformers of the manual. decoupled CT’s. See chapter (See ↪3.5.1 TI – Standard Phase and Ground Current Measuring Input Current Transformers of the manual! Card.)
Page 30: Symbols In Function Diagrams
2 MRM4 – Motor Protection 2.1.1.2 Symbols in Function Diagrams 2.1.1.2 Symbols in Function Diagrams Setting Values Prot . ExBlo TripCmd The upper box in the diagram on the left is the usual symbol of a setting value in a function diagram.
Page 31 2 MRM4 – Motor Protection 2.1.1.2 Symbols in Function Diagrams Another remark: All diagrams in this document show a small label, for example the bottom one: “HPT_Y46”. This is the diagram name, i. e. a unique identifier for the diagram. Of course, this is not a setting name, nor any other part of the depicted logic.
Page 32 2 MRM4 – Motor Protection 2.1.1.2 Symbols in Function Diagrams Hold time: This is a pulse which is triggered by name . the input (and in this case, the pulse duration is Trip duration time settable via parameter). The usual set of logic operators: AND, OR, eXclusive OR (from left to right).
Page 33: Information About The Device
2 MRM4 – Motor Protection 2.2 Information About the Device Information About the Device Scope of Delivery The delivery scope includes: The transportation box The protective device The mounting nuts The test report Please check the consignment for completeness on arrival (delivery note). Please ascertain whether the type plate, connection diagram, type code and description of the device tally.
Page 34 2 MRM4 – Motor Protection 2.2 Information About the Device Storage The devices must not be stored outdoors. The storing facilities have to be sufficiently ventilated and must be dry (see Technical Data, ↪13.1 Technical Data). Battery The purpose of the battery is to buffer the real-time clock in case of an outage of the protective device's power supply.
Page 35: Order Form Of The Device
2 MRM4 – Motor Protection 2.2.1 Order Form of the Device 2.2.1 Order Form of the Device Motor Protection MRM4 -2 # Digital Binary Analog Interf. Housing Display Inputs output Inputs / for ext. relays Outputs RTD Box 0 / 0 —...
Page 36 2 MRM4 – Motor Protection 2.2.1 Order Form of the Device Motor Protection MRM4 -2 # RS485 / D-SUB interface Modbus RTU, 60870‑5‑103, DNP3.0 Ethernet 100MB / RJ45 61850, Modbus TCP, 60870‑5‑104, DNP3.0 TCP/UDP RS485 terminals Modbus RTU, 60870‑5‑103, DNP3.0 Ethernet 100MB / RJ45 Modbus TCP,...
Page 37 2 MRM4 – Motor Protection 2.2.1 Order Form of the Device Motor Protection MRM4 -2 # Control functions for 1 switchgear and logic up to 80 equations. IRIG‑B interface for time synchronization. NOTICE! (*) Within every communication option only one communication protocol is usable. The meaning of the notation “+1”...
Page 38: Overview Of Assembly Groups
2 MRM4 – Motor Protection 2.2.1.1 Overview of Assembly Groups 2.2.1.1 Overview of Assembly Groups The fitted assembly groups are as follows for the main variants: Typecode slot X1 slot X2 slot X3 MRM4-2A... DI-8 X1 MRM4-2B... DI-4 X1 OR3-AnO-Ir slot •...
Page 39: Navigation - Operation
2 MRM4 – Motor Protection 2.2.2 Navigation – Operation 2.2.2 Navigation – Operation The following illustration applies to protective devices with “B1” housing and a small display, in particular the MRM4: 9 10 MRM4-3.10-EN-MAN MRM4...
Page 40: Front Panel Parts
2 MRM4 – Motor Protection 2.2.2.1 Front Panel Parts 2.2.2.1 Front Panel Parts (1) Programmable LEDs Messages inform you about operational conditions, system data or other device particulars. They additionally provide you with information regarding failures and functioning of the device as well as other states of the device and the equipment.
Page 41 2 MRM4 – Motor Protection 2.2.2.1 Front Panel Parts (10) »CTRL« Key Direct Access to the Control Page, see ↪“Single-Line Diagram”. MRM4-3.10-EN-MAN MRM4...
Page 42: Softkey Symbols
2 MRM4 – Motor Protection 2.2.2.2 Softkey Symbols 2.2.2.2 Softkey Symbols The following symbols are used to label the function of a Softkey: Softkey Meaning Via Softkey »up« you can scroll upwards. You go to the prior menu point/one parameter up by scrolling upwards.
Page 43: Modules, Settings, Signals And Values
2 MRM4 – Motor Protection 2.3 Modules, Settings, Signals and Values Modules, Settings, Signals and Values The MRM4 is a digital protection device that holds various data in its internal memory. Some data is meant to be changed by the user to adapt the functionality to the respective application, other data types are set by the device during run-time and are therefore read-only from the user's perspective.
Page 44 2 MRM4 – Motor Protection 2.3 Modules, Settings, Signals and Values desirable to directly transfer the setting value from one device to another; the TCP/IP settings are an example for this.) There are several types of parameters, depending on the type of data they can hold. For the user, it is not necessary to know details, but it can be good to know that there are numerical parameters (e. g.
Page 45 2 MRM4 – Motor Protection 2.3 Modules, Settings, Signals and Values Signals • Signals are run-time states, i. e. depend on the result of a protection function or on • the state of a Digital Input. Signals are part of the “menu tree”. They can all be found in the menu path [Operation / Status Display].
Page 46 2 MRM4 – Motor Protection 2.3 Modules, Settings, Signals and Values hold a digital, integer number. For most Counters, there is a related Direct Command, which can be used to reset the Counter value to 0. MRM4 MRM4-3.10-EN-MAN...
Page 47: Parameter Settings
2 MRM4 – Motor Protection 2.3.1 Parameter Settings 2.3.1 Parameter Settings Parameter Setting at the HMI Every parameter belongs to an access area. Editing and changing of a parameter requires a sufficient access authorization. See ↪2.4.4 Access Level Passwords for a detailed description of access areas.
Page 48 2 MRM4 – Motor Protection 2.3.1 Parameter Settings NOTICE! A star symbol in front of the changed parameters indicates that the modifications have only been saved temporarily, they are not yet finally stored and adopted by the device. In order to make things easier to follow, especially where complex parameter changes are involved, on every superior/higher-ranking menu level the intended change of the parameter is indicated by the star symbol (“star trace”).
Page 49 2 MRM4 – Motor Protection 2.3.1 Parameter Settings Option 2: Context-dependent Access Authorization Navigate to the parameter, that is to be changed. If the parameter is selected, the lower right corner of the display shows a »Key«-Symbol. This symbol indicates, that the device is still within the »Read Only-Lv0« level (↪2.4.4 Access Level Passwords), or that the current level does not provide sufficient access rights...
Page 50 2 MRM4 – Motor Protection 2.3.1 Parameter Settings NOTICE! Plausibility check: In order to prevent obvious wrong settings the device monitors constantly all temporary saved parameter changes. If the device detects an implausibility, this is indicated by a question mark in front of the respective parameter. In order to make things easier to follow up, especially where complex parameter changes are involved, on every superior/higher-ranking menu level, above the temporary saved parameters an invalidity is indicated by the question mark (plausibility trace).
Page 51: Setting Lock
2 MRM4 – Motor Protection 2.3.1.1 Setting Lock Option Setting Group Switch Even if DI4 becomes inactive afterwards, parameter set 4 remains active, until there is a new distinct request (e. g. DI3 becomes active and all the other assignments are inactive) Via SCADA Switch over if there is a distinct SCADA request.
Page 52: Adaptive Parameter Sets
2 MRM4 – Motor Protection 2.3.2 Adaptive Parameter Sets 2.3.2 Adaptive Parameter Sets By means of Adaptive Parameter Sets you can modify dynamically setting values within a protection module. NOTICE! Adaptive Parameter Sets are available only for a few protection modules (essentially only the overcurrent protection modules).
Page 53 2 MRM4 – Motor Protection 2.3.2 Adaptive Parameter Sets Protection Para/Global Prot Para/I-Prot/I[1] ... Name Value ExBlo1 - . - ExBlo2 - . - ExBlo TripCmd - . - Ex rev Interl - . - AdaptSet 1 V[1] - 27, 59 . Alarm AdaptSet 2 - .
Page 54: Status Display
2 MRM4 – Motor Protection 2.3.3 Status Display 2.3.3 Status Display In the status display within the »Operation« menu, the present state of all signals can be viewed. This means the User is able to see if the individual signals are active or inactive at that moment.
Page 55: Menu Structure
2 MRM4 – Motor Protection 2.3.4 Menu Structure 2.3.4 Menu Structure The menu structure offers the following top-level menu entries. You enter a menu branch with Softkey ▶. Softkeys ▲ and ▼ let you navigate to the previous or next one. Operation Here you can find run-time data.
Page 56 2 MRM4 – Motor Protection 2.3.4 Menu Structure • Global Protection Parameter • • Set 1 … Set 4 • • PSet-Switch (Switching Parameter Set) • Control Settings for switchgear devices. Control • The HighPROTEC devices named “MR…” can control •...
Page 57: Device Planning
The manufacturer does not accept liability for any personal or material damage as a result of incorrect planning. Contact your SEG Customer Service representative for more information. WARNING! Beware of the inadvertent deactivating of protective functions/modules, because all the settings of a deativated module get lost (i. e.
Page 58: Field Parameters
2 MRM4 – Motor Protection 2.3.6 Field Parameters 2.3.6 Field Parameters Within the field parameters you can set all parameters that are relevant for the primary side and the mains operational method like frequency, primary and secondary values. All field parameters are accessible via the menu branch [Field Para]. See the Reference Manual for detailed tables of all settings that are available for the MRM4.
Page 59: Device Parameters
2 MRM4 – Motor Protection 2.3.7 Device Parameters 2.3.7 Device Parameters Date and Time In the menu [Device Para / Time] »Date and Time« you can set date and time (including a sub-menu for timezone and Daylight-Saving settings). Version Within the menu [Device Para / Version] you can obtain information on the software and hardware version.
Page 60: Reset Counters, Values And Records
2 MRM4 – Motor Protection 2.3.8 Reset Counters, Values and Records 2.3.8 Reset Counters, Values and Records Manual Resets In menu [Operation / Reset] you can: • reset counters, • • delete records (e. g. disturbance records) and • • reset special things (like statistics, thermal replica...). •...
Page 61: Security
2 MRM4 – Motor Protection 2.4 Security Security General CAUTION! All security settings have to be made by the user of the MRM4! It is strictly recommended that you adapt the security settings according to the local regulations and requirements at the end of the commissioning procedure. The MRM4 is delivered with maximum “open”...
Page 62: Network Security
2 MRM4 – Motor Protection 2.4.1 Network Security A sub-set of these messages, restricted to only the security-related messages, can (also) be accessed at the menu branch [Operation / Security / Security Logger]. 2.4.1 Network Security SCADA Communication It is to be noted that there are always certain security risks related to the use of SCADA protocols.
Page 63: Passwords
2 MRM4 – Motor Protection 2.4.2 Passwords 2.4.2 Passwords Password Types There are two different types of passwords: • • Connection passwords enable the user to establish a connection with the operating software Smart view. (See ↪2.4.3 Connection Passwords, Smart view Access.) •...
Page 64: Connection Passwords, Smart View Access
Therefore all connections between MRM4 and Smart view are fully encrypted, using state- of-the-art cryptographic algorithms. SEG provides each installation of Smart view (version 4.70 or later) and each individual HighPROTEC device (release 3.6 or later) with cryptographic certificates, which are automatically exchanged when the connection is being established.
Page 65 2 MRM4 – Motor Protection 2.4.3 Connection Passwords, Smart view Access NOTICE! If Smart view is used to deactivate the Smart view access, then the current session gets automatically terminated. Connection Passwords for Smart view Access There are two connection passwords. At the beginning of a new session, Smart view prompts the user for a password, and the connection is established only after the password has been correctly entered.
Page 66: Access Level Passwords
2 MRM4 – Motor Protection 2.4.4 Access Level Passwords 2.4.4 Access Level Passwords Access level passwords are required for any changes to the device settings, independent of whether the change is done via Smart view or directly at the HMI (panel). There is a security level –...
Page 67 You have to ensure that all passwords are activated again after the commissioning. That means, that all access areas have to be protected by sufficiently secure passwords. SEG will not take over any liability for any personal injuries or damages that are caused by deactivated password protection.
Page 68 2 MRM4 – Motor Protection 2.4.5 Access Levels 2.4.5 Access Levels Supervisor-Lv3 Device Configuration Prot-Lv2 Control-Lv2 Protection Settings Control Settings Prot-Lv1 Control-Lv1 Reset/Ack Control Read Only-Lv0 Read Only Fig. 3: Available Levels / Access Authorizations. The access levels are designed in form of two hierarchic strands. The supervisor (administrator) password provides access to all parameters and settings.
Page 69 2 MRM4 – Motor Protection 2.4.5 Access Levels Basic mode: no password, no parameter changes: Short De‐ Name of Access Area Access to: signation in (Panel or Smart view) Reference Manual “RO” Read Only-Lv0 Level “RO” provides Read Only access to all settings and parameters of the device.
Page 70 2 MRM4 – Motor Protection 2.4.5 Access Levels If you want to explicitly set back (i. e. lock) the access area at the end (instead of waiting for the »t-max Edit/Access« timeout) you have to enter the »Read Only-Lv0« mode. Unlock an access area at the panel: Via the menu [Device Para / Access Level] it is possible to unlock or lock access areas (authorizations).
Page 71: Reset To Factory Defaults, Reset All Passwords
2 MRM4 – Motor Protection 2.4.6 Reset to Factory Defaults, Reset All Passwords 2.4.6 Reset to Factory Defaults, Reset All Passwords There is a dedicated Reset dialog that allows for selecting any of the following options: • Reset to the factory defaults, or •...
Page 72 If the password should be lost and the »Reset all passwords« option has been made unavailable then the only chance to recover control is to reset the MRM4 to factory default. If this option has been deactivated, too, then the MRM4 has to be sent to SEG as a service request.
Page 73: Acknowledgments
2 MRM4 – Motor Protection 2.5 Acknowledgments Acknowledgments The term “acknowledgment” means to reset the latching of a state. Latching can be configured for the the following types of objects or states: • LEDs • • Binary output relays • •...
Page 74 2 MRM4 – Motor Protection 2.5 Acknowledgments NOTICE! Note that any latched state can be acknowledged only if the signal that initiated the setting is no longer active. This is a general rule that applies to all acknowledgment types. Another general rule is that with the setting [Device Para / Acknowledge] »Remote Reset«...
Page 75 2 MRM4 – Motor Protection 2.5 Acknowledgments [Device Para / Acknowledge] »Ack BO« ✔ Assigned signal acknowledges all binary output relays. [Device Para / Acknowledge] »Ack Scada« ✔ Assigned signal acknowledges latched SCADA signals. Automatic Acknowledgment With an automatic acknowledgment all those LEDs for which this is activated get acknowledged with a protection alarm or with a General Alarm, »Prot .
Page 76 2 MRM4 – Motor Protection 2.5 Acknowledgments [Operation / Acknowledge] »SG [x] . Ack TripCmd« ✔ Acknowledge the trip command of switchgear “SG [x]”. Remark: The menu branch does not show the abstract module name »SG [x]«. What you see instead is the switchgear designation that has been assigned via the Control Page (Single-Line diagram), i. e.
Page 77 2 MRM4 – Motor Protection 2.5 Acknowledgments • “Ack LEDs and relays” – The “long keypress“ acknowledges all LEDs and all binary • output relays (only the password will be asked for, see below). • “Ack Everything” – The “long keypress“ acknowledges all latched items (only the •...
Page 78: Measuring Values
2 MRM4 – Motor Protection 2.6 Measuring Values Measuring Values Read out Measured Values In menu [Operation / Measured Values] both measured and calculated values can be viewed. The measured values are ordered by »standard values« and »special values« (depending on the type of device). Display Options Menu [Device Para / Measurem Display] offers options to change the display of measured values.
Page 79: Statistics
2 MRM4 – Motor Protection 2.7 Statistics Statistics In the menu [Operation / Statistics], the min., max. and average values of the measured and calculated measured quantities can be found. 2.7.1 Configuration of the Minimum and Maximum Values The calculation of the minimum and maximum values is (re-)started with any of the following events: •...
Page 80 2 MRM4 – Motor Protection 2.7.2.1 Configuration of the Current-Based Average Value Calculation* • “Duration”: fixed or sliding period. The period duration is settable via »Duration I • Demand«. • “StartFct”: The average values are calculated based on the time period between two •...
Page 81: Smart View
2 MRM4 – Motor Protection 2.8 Smart view Smart view Smart view is a parameter setting and evaluation software. It has a Technical Manual of its own. • Menu-controlled parameter setting incl. validity checks • • Offline configuration of all relay types •...
Page 82 2 MRM4 – Motor Protection 2.9 DataVisualizer • Save window setups (snapshots) and print for reporting • • Open industry standard COMTRADE files from other intelligent electronic devices • • Convert downloaded waveform files to COMTRADE file format using “Export” feature •...
Page 83: Hardware
3 Hardware 3.1 Dimension Drawings Hardware Dimension Drawings Three-Side-View – 19” Variant NOTICE! Depending on the connection method of the SCADA system used the needed space (depth) differs. If, for instance, a D-Sub-Plug is used, it has to be added to the depth dimension.
Page 84 3 Hardware 3.1 Dimension Drawings 9.64 141.5 [0.38] 4 × M 2.5 mm [7.17] [5.57] screw max. 206.50 [max. 8.13] [3.82] [5.00] Fig. 4: 3-Side-View B1 Housing (19” Devices). (All dimensions in mm, except dimensions in brackets [inch].) Three-Side-View – Variant for Door Mounting NOTICE! Dependent on the connection method of the SCADA system used the needed space (depth) differs.
Page 85 3 Hardware 3.1 Dimension Drawings NOTICE! The installation diagram shown in this section is valid only for devices with 8 pushbuttons at the front side of the HMI. (INFO-, C-, OK-, CTRL-Pushbutton and 4 Softkeys (Pushbuttons)). 9.64 [0.38] [7.17] 141.50 [5.57] max.
Page 86 3 Hardware 3.1 Dimension Drawings Installation Diagram – Cutout for Door Mounting WARNING! Even when the auxiliary voltage is switched-off, unsafe voltages might remain at the device connections. NOTICE! The installation diagram shown in this section is exclusively valid for devices with 8 pushbuttons at the front side of the HMI.
Page 87 3 Hardware 3.1 Dimension Drawings CAUTION! Be careful. Do not overtighten the mountings nuts of the relay (M4 metric 4 mm). Check the torque by means of a torque wrench (1.7 Nm [15 In⋅lb]). Over-tightening the mounting nuts could cause personal injury or damage the relay. MRM4-3.10-EN-MAN MRM4...
Page 88: Mrm4 - Installation And Wiring
3 Hardware 3.2 MRM4 – Installation and Wiring MRM4 – Installation and Wiring 3.2.1 Grounding WARNING! The housing must be carefully grounded. Connect a ground cable (protective earth, 4 to 6 mm² [AWG 11‒9], tightening torque 1.7 Nm [15 lb⋅in]) to the housing, using the screw that is marked with the ground symbol (at the rear side of the device).
Page 89: Overview Of Slots - Assembly Groups
3 Hardware 3.2.2 Overview of Slots – Assembly Groups 3.2.2 Overview of Slots – Assembly Groups NOTICE! The set of assembly groups (hardware cards) that the MRM4 is fitted with depends on the Order Form of the MRM4. In each of the slots an assembly group can be integrated. A tabular overview is in chapter ↪2.2.1.1 Overview of Assembly Groups.
Page 90: Slot X1
3 Hardware 3.3 Slot X1 Slot X1 • Power Supply Card with Digital Inputs • slot1 slot2 slot3 X100 X103 Fig. 8: Rear side of the device (Slots). The type of power supply card and the number of digital inputs on it used in this slot is dependent on the ordered device type.
Page 91: Di8-X Power Supply And Digital Inputs
3 Hardware 3.3.1 DI8-X Power Supply and Digital Inputs 3.3.1 DI8-X Power Supply and Digital Inputs WARNING! In addition to the grounding of the housing (protective earth, see ↪3.2.1 Grounding) there must be an additional ground cable connected to the power supply card (functional earth, min.
Page 92 3 Hardware 3.3.1 DI8-X Power Supply and Digital Inputs Functional Earth L+ Power Supply n.c. COM1 COM2 COM3 Fig. 9: Terminals Functional Earth Power Supply n.c. COM1 COM2 COM3 COM3 Fig. 10: Electro-mechanical assignment This assembly group comprises: • a wide-range power supply unit •...
Page 93 3 Hardware 3.3.1 DI8-X Power Supply and Digital Inputs • 2 digital inputs, non-grouped • • Connector for the functional earth (which must be connected, see the “Warning” • message above) Auxiliary Voltage Supply • The aux. voltage inputs (wide-range power supply unit) are non-polarized. The •...
Page 94 3 Hardware 3.3.1 DI8-X Power Supply and Digital Inputs • “230 VDC” • • “110 VAC” • • “230 VAC” • If a voltage >80% of the set switching threshold is applied at the digital input, the state change is recognized (physically “1”). If the voltage is below 40% of the set switching threshold, the device detects physically “0”.
Page 95: X1 - Power Supply And Digital Inputs
3 Hardware 3.3.2 DI-4 X1 - Power Supply and Digital Inputs 3.3.2 DI-4 X1 - Power Supply and Digital Inputs WARNING! In addition to the grounding of the housing (protective earth, see ↪3.2.1 Grounding) there must be an additional ground cable connected to the power supply card (functional earth, min.
Page 96 3 Hardware 3.3.2 DI-4 X1 - Power Supply and Digital Inputs Functional Earth L+ Power Supply n.c. n.c. n.c. n.c. n.c. COM1 COM2 n.c. n.c. Fig. 11: DI-4 X1 - Terminal Marking Functional Earth Power Supply n.c. n.c. n.c. n.c. n.c.
Page 97 3 Hardware 3.3.2 DI-4 X1 - Power Supply and Digital Inputs • Connector for the functional earth (which must be connected, see the “Warning” • message above) Auxiliary Voltage Supply • The aux. voltage inputs (wide-range power supply unit) are non-polarized. The •...
Page 98 3 Hardware 3.3.2 DI-4 X1 - Power Supply and Digital Inputs • “110 VAC” • • “230 VAC” • If a voltage >80% of the set switching threshold is applied at the digital input, the state change is recognized (physically “1”). If the voltage is below 40% of the set switching threshold, the device detects physically “0”.
Page 99: Slot X2
3 Hardware 3.4 Slot X2 Slot X2 • Relay Output Card • • SC (Supervision Contact) • • Analog Output (optional, depending on the • ordered device type) slot1 slot2 slot3 X100 X103 Fig. 13: Rear side of the device (Slots). The type of card in this slot is dependent on the ordered device type.
Page 100: Assembly Group With 5 Binary Output Relays + 1 System Contact
3 Hardware 3.4.1 BO-5 X - Assembly Group with 5 Binary Output Relays + 1 System Contact 3.4.1 BO-5 X - Assembly Group with 5 Binary Output Relays + 1 System Contact WARNING! Ensure the correct tightening torques (see diagram). Connection cross section: min.
Page 101 3 Hardware 3.4.1 BO-5 X - Assembly Group with 5 Binary Output Relays + 1 System Contact BO1 NC BO1 C BO1 NO BO2 NC BO2 C BO2 NO BO3 NC BO3 C BO3 NO BO4 NC BO4 C BO4 NO BO5 NC BO5 C BO5 NO...
Page 102: Or3-Ano-Ir - Assembly Group With 3 Output Relays, Supervision Contact, Analog Output, Irig-B
3 Hardware 3.4.2 OR3-AnO-Ir – Assembly Group with 3 Output Relays, Supervision Contact, Analog Output, IRIG‑B 3.4.2 OR3-AnO-Ir – Assembly Group with 3 Output Relays, Supervision Contact, Analog Output, IRIG‑B WARNING! Ensure the correct tightening torques (see diagram). Connection cross section: min. 0.25 mm² (AWG 23) … max. 2.5 mm² (AWG 14) with or without wire end ferrule.
Page 103 3 Hardware 3.4.2 OR3-AnO-Ir – Assembly Group with 3 Output Relays, Supervision Contact, Analog Output, IRIG‑B IRIG-B+ IRIG-B- BO1 NO BO2 NO BO3 NC BO3 C BO3 NO BO4 NC BO4 C BO4 NO Analog Output − n.c. n.c. n.c. Fig.
Page 104: Slot X3
3 Hardware 3.5 Slot X3 Slot X3 • CT – Current Transformer Measuring Inputs • slot1 slot2 slot3 X100 X103 Fig. 18: Rear side of the device (Slots). Available assembly groups in this slot: • TI: Phase and Ground Current Measuring Input Card, standard sensitivity. •...
Page 105: Ti - Standard Phase And Ground Current Measuring Input Card
3 Hardware 3.5.1 TI – Standard Phase and Ground Current Measuring Input Card 3.5.1 TI – Standard Phase and Ground Current Measuring Input Card This measuring card is provided with 4 current measuring inputs: three for measuring the phase currents and one for measuring of the earth current. Each of the current measuring inputs has a measuring input for 1 A and 5 A.
Page 106 3 Hardware 3.5.1 TI – Standard Phase and Ground Current Measuring Input Card WARNING! Use a torque limiting spanner, and adhere to the exact tightening torques: • Two screws for the input block: • ◦ Torque: 0.3 Nm (2.65 lb⋅in) ◦...
Page 107 3 Hardware 3.5.1 TI – Standard Phase and Ground Current Measuring Input Card IL1-1A IL1-N IL1-5A IL2-1A IL2-N IL2-5A IL3-1A IL3-N IL3-5A IG-1A IG-N IG-5A Fig. 20: TI – Electro-mechanical assignment MRM4-3.10-EN-MAN MRM4...
Page 108: Tis - Phase And Sensitive Ground Current Measuring Card
3 Hardware 3.5.2 TIs – Phase and Sensitive Ground Current Measuring Card 3.5.2 TIs – Phase and Sensitive Ground Current Measuring Card The sensitive ground current measuring card “TIs” is provided with 4 current measuring inputs: three for measuring the phase currents and one for measuring of the earth current. The technical data of the sensitive ground measuring input are different from the technical data of the phase current measuring inputs.
Page 109 3 Hardware 3.5.2 TIs – Phase and Sensitive Ground Current Measuring Card WARNING! Use a torque limiting spanner, and adhere to the exact tightening torques: • Two screws for the input block: • ◦ Torque: 0.3 Nm (2.65 lb⋅in) ◦ •...
Page 110 3 Hardware 3.5.2 TIs – Phase and Sensitive Ground Current Measuring Card IL1-1A IL1-N IL1-5A IL2-1A IL2-N IL2-5A IL3-1A IL3-N IL3-5A IG-1A IG-N IG-5A Fig. 22: TIs – Electro-mechanical assignment MRM4 MRM4-3.10-EN-MAN...
Page 111: Ct Requirements
3 Hardware 3.5.3 CT Requirements 3.5.3 CT Requirements WARNING! In addition to the considerations in this chapter and the requirements mentioned, all applicable national and international standards and regulations have to be followed. Symbols The following table gives an overview of the symbols that are used in the CT requirement section.
Page 112: Protection-Specific Considerations
3 Hardware 3.5.3.1 Protection-Specific Considerations Overcurrent Protection Maximum overcurrent threshold setting »I>«, as primary value, of all active elements »50P[n]«, »51P[n]«. 20 or I , whatever is greater > For most CT classes it is necessary to make sure that the requirements in the following table are fulfilled.
Page 113: ↪3.5.3.2 Example: Select A Ct Depending On The K Factor
3 Hardware 3.5.3.2 Example: Select a CT Depending on the K Factor K = K ⋅K = 25⋅1 = 25 ↪3.5.3.2 Example: Select a CT Depending on the K Factor shows how to select a particular CT type depending on the K factor. 3.5.3.2 Example: Select a CT Depending on the K Factor Current Transformer:...
Page 114 3 Hardware 3.5.3.2 Example: Select a CT Depending on the K Factor CT Types TPX, TPY, TPZ For the selection of a TPX class CT, no additional calculations besides K and K are necessary. The secondary connected burden R′ should be known. MRM4 MRM4-3.10-EN-MAN...
Page 115: Current Transformers (Ct)
3 Hardware 3.5.4 Current Transformers (CT) 3.5.4 Current Transformers (CT) Check the installation direction. DANGER! It is imperative that the secondary sides of measuring transformers be grounded. DANGER! The current measuring inputs may exclusively be connected to current measuring transformers (with galvanic separation). WARNING! CT secondary circuits must always to be low burdened or short-circuited during operation.
Page 116: Current Transformer Connection Examples
3 Hardware 3.5.4.2 Current Transformer Connection Examples 3.5.4.2 Current Transformer Connection Examples IL1' IL2' IL3' Fig. 23: Three phase current measurement; In secondary = 5 A. MRM4 MRM4-3.10-EN-MAN...
Page 117 3 Hardware 3.5.4.2 Current Transformer Connection Examples I ̲L1' I ̲L2' I ̲L1 I ̲L3' I ̲L2 I ̲G' = IG meas I ̲L3 Ring Core Type Current Transformer: Measures the ground current. (Sum of the three phase currents). Can be used for measuring the earth current in isolated and compensated networks.
Page 118 3 Hardware 3.5.4.2 Current Transformer Connection Examples IL1' IL1' IL2' IL2' IL3' IL3' Fig. 25: Three phase current measurement; In secondary = 5 A. Earth-current measuring via Holmgreen-connection; IGnom secondary = 5 A. IL1' IL1' IL2' IL2' IL3' IL3' Fig. 26: Three phase current measurement;...
Page 119 3 Hardware 3.5.4.2 Current Transformer Connection Examples I ̲L1' I ̲L1' I ̲L1 I ̲L2' I ̲L3' I ̲L3' I ̲L2 I ̲G' I ̲L3 Ring Core Type Current Transformer: Measures the ground current. (Sum of the three phase currents). Can be used for measuring the earth current in isolated and compensated...
Page 120 3 Hardware 3.5.4.2 Current Transformer Connection Examples IL1' IL1' IL3' IL3' IL2' IL2' Fig. 28: Three phase current measurement; In secondary = 1 A. Earth-current measuring via Holmgreen-connection; IGnom secondary = 1 A. MRM4 MRM4-3.10-EN-MAN...
Page 121: Connecting The Current Inputs
3 Hardware 3.5.4.3 Connecting the Current Inputs 3.5.4.3 Connecting the Current Inputs The Phase and Ground Current Measuring Input Card supports both pin-terminal connections and ring-terminal connections. CAUTION! You have to follow national standards and directives. It might be that not all connection types are permissible in your country.
Page 122 3 Hardware 3.5.4.3 Connecting the Current Inputs For the ring-terminal connection type, there is one intermediate step to be done. Move the slider aside, so that the screws and metal contact become fully accessible. Every terminal consists of a screw with a non-losable metal contact.
Page 123: Slot X100: Ethernet Interface
3 Hardware 3.6 Slot X100: Ethernet Interface Slot X100: Ethernet Interface slot1 slot2 slot3 X100 X103 Fig. 29: Rear side of the device (Slots). An Ethernet interface may be available depending on the ordered device type. NOTICE! The available combinations can be gathered from the ordering code.
Page 124: Ethernet - Rj45
3 Hardware 3.6.1 Ethernet – RJ45 3.6.1 Ethernet – RJ45 MRM4 MRM4-3.10-EN-MAN...
Page 125: Slot X101
3 Hardware 3.7 Slot X101 Slot X101 • IRIG-B00X • • URTD • slot1 slot2 slot3 X100 X103 Fig. 30: Rear side of the device (Slots). Depending on the ordered device type, the slot X101 can be equipped as follows: •...
Page 126: Irig-B00X
3 Hardware 3.7.1 IRIG-B00X 3.7.1 IRIG-B00X WARNING! Make sure that the tightening torque is 0.56-0.79 Nm. X101 IRIG-B+ IRIG-B- Fig. 31: IRIG-B00X – Terminal Marking. IRIG-B+ IRIG-B- Fig. 32: IRIG-B00X – Pin Assignment. Remark: More information on IRIG-B can be found in ↪4.6.2 IRIG-B00X.
Page 127: Interface For The Urtd Module
3 Hardware 3.7.2 Interface for the URTD Module 3.7.2 Interface for the URTD Module The Universal Resistance-Temperature Detector (URTD) module has to be connected to the protective device at the special fiber optic interface (1 optical slave). Fig. 33: Interface for the External URTD Module Fig.
Page 128: Slot X103: Data Communication
3 Hardware 3.8 Slot X103: Data Communication Slot X103: Data Communication slot1 slot2 slot3 X100 X103 Fig. 35: Rear side of the device (Slots). The data communication interface in the X103 slot is dependent on the ordered device type. The scope of functions is dependent on the type of data communication interface. Available assembly groups in this slot: •...
Page 129: Rs485 (Modbus® Rtu / Iec 60870-5-103 / Dnp3 Rtu)
3 Hardware 3.8.1 RS485 (Modbus® RTU / IEC 60870-5-103 / DNP3 RTU) 3.8.1 RS485 (Modbus® RTU / IEC 60870-5-103 / DNP3 RTU) WARNING! Ensure the correct tightening torques. 0.3 Nm 2.65 lb⋅in 0.23 Nm 2.03 lb⋅in Protective Relay 120Ω Fig. 36: Terminals Protective Relay R1 = 560Ω...
Page 130 3 Hardware 3.8.1 RS485 (Modbus® RTU / IEC 60870-5-103 / DNP3 RTU) Protective Relay R1 = 560Ω R2 = 120Ω Fig. 38: Wiring example, Device in the middle of the bus Protective Relay R1 = 560Ω R2 = 120Ω Fig. 39: Wiring example, Device at the end of the bus.
Page 131 3 Hardware 3.8.1 RS485 (Modbus® RTU / IEC 60870-5-103 / DNP3 RTU) 2.2nF 2.2nF 2.2nF 2.2nF (internal) (internal) (internal) (internal) Fig. 40: Shielding Options (2-wire + Shield) (Mt) Shield at bus master side connected to earth termination resistors used. (Dt) Shield at bus device side connected to earth termination resistors used.
Page 132 3 Hardware 3.8.1 RS485 (Modbus® RTU / IEC 60870-5-103 / DNP3 RTU) 2.2nF 2.2nF 2.2nF 2.2nF (internal) (internal) (internal) (internal) Fig. 41: Shielding Options (3-wire + Shield) (Mt) Shield at bus master side connected to earth termination resistors used. (Dt) Shield at bus device side connected to earth termination resistors used.
Page 133: Profibus Dp/ Modbus® Rtu / Iec 60870-5-103 Via Fiber Optic
3 Hardware 3.8.2 Profibus DP/ Modbus® RTU / IEC 60870‑5‑103 via Fiber Optic 3.8.2 Profibus DP/ Modbus® RTU / IEC 60870‑5‑103 via Fiber Optic Fig. 42: Fiber Optic – FO, ST connector WARNING! Do not look directly into the light beam that is emitted from the fiber optics connector! Serious injury of the eyes can be consequence of ignoring this warning.
Page 134: Profibus Dp Via D-Sub
3 Hardware 3.8.3 Profibus DP via D‑SUB 3.8.3 Profibus DP via D‑SUB D-SUB assignment - bushing • 1: Earthing/shielding • • 3: RxD TxD - P: High-Level • • 4: RTS-signal • • 5: DGND: Ground, neg. Potential of aux voltage supply •...
Page 135: Modbus® Rtu / Iec 60870-5-103 Via D-Sub
3 Hardware 3.8.4 Modbus® RTU / IEC 60870‑5‑103 via D‑SUB 3.8.4 Modbus® RTU / IEC 60870‑5‑103 via D‑SUB D-SUB assignment - bushing • 1: Earthing/shielding • • 3: RxD TxD - P: High-Level • • 4: RTS-signal • • 5: DGND: Ground, neg. Potential of aux voltage supply •...
Page 136: Ethernet / Tcp/Ip Via Fiber Optics
3 Hardware 3.8.5 Ethernet / TCP/IP via Fiber Optics 3.8.5 Ethernet / TCP/IP via Fiber Optics RxD TxD Fig. 43: Fiber Optics – FO, LC duplex connector. CAUTION! After plugging in the LC connector, fasten the metal protecting cap. The tightening torque for the screw is 0.3 Nm [2.65 lb⋅in]. WARNING! Do not look directly into the light beam that is emitted from the fiber optics connector! Serious injury of the eyes can be consequence of ignoring this warning.
Page 137: Pc Interface - X120
3 Hardware 3.9 PC Interface – X120 PC Interface – X120 B1, B2 und B3 Housing USB-Interface for Parameter Setting and Evaluation Software - X120 Fig. 44: USB (Mini-B) MRM4-3.10-EN-MAN MRM4...
Page 138: Input, Output And Led Settings
3 Hardware 3.10 Input, Output and LED Settings 3.10 Input, Output and LED Settings 3.10.1 LEDs NOTICE! Printing of LED labels for the device front: A PDF-Template is delivered in order to create and print out self adhesive films for LED assignment texts (front foil) by means of a laser printer.
Page 139 3 Hardware 3.10.1 LEDs »INFO« Push-Button Via the »INFO« button it is always possible to display the current status of the assigned trigger signals. Main LED overview: If the »INFO« key is pressed once, the »main overview of the left LEDs« is displayed (for the LEDs on the left-hand side).
Page 140 3 Hardware 3.10.1 LEDs Acknowledgment Options Resetting a latched LED will always require an acknowledgment. (For a detailed description, ↪2.5 Acknowledgments.) LEDs can be acknowledged by: • Via the push-button »C« at the operating panel, see • ↪“Manual Acknowledgment (by Pressing the C Key at the Panel)”.
Page 141: Configuration Of The Digital Inputs
3 Hardware 3.10.2 Configuration of the Digital Inputs The »System OK« LED This LED flashes green while the device is booting. After booting is complete, the LED for System OK lights up in green, signaling that the protection (function) is »activated«. Please refer to ↪10 Self-Supervision and to the external document Troubleshooting Guide to find...
Page 142 3 Hardware 3.10.2 Configuration of the Digital Inputs CAUTION! In addition to the debouncing time that can be set via the software, there is a hardware- related input delay of ~12ms for stabilization. This must be taken into account for every state change of the input.
Page 143 3 Hardware 3.10.2 Configuration of the Digital Inputs Checking the Assignments of a Digital Input In order to check the targets that a Digital Input is assigned to please proceed as follows: Call up menu [Device Para / Digital Inputs]. Navigate to the Digital Input that should be checked.
Page 144: Output Relays Settings
3 Hardware 3.10.3 Output Relays Settings 3.10.3 Output Relays Settings The State of the Relay Outputs can be checked within the menu: [Operation / Status Display / Name of the assembly group (e. g. BO-3 X)] The Relay Outputs can be configured within the menu: [Device Para / Binary Outputs / Name of the assembly group (e. g.
Page 145 3 Hardware 3.10.3 Output Relays Settings Latching If a binary output is configured as »Latched« = “Active”, it will keep its state – regardless whatever may happen – until it is acknowledged (see “Acknowledgment Options” below). A latched binary output gets reset only in any of the following cases and only after all assigned trigger signals have dropped out: •...
Page 146 3 Hardware 3.10.3 Output Relays Settings Functionality Binary Outputs OR_Y02 & Inverting Assignment 1 no assignment & 1..n, Assignment List ≥1 Inverting 1 & Assignment 7 no assignment & 1..n, Assignment List Inverting 7 ◄ ◄ hold time ≥1 & ≥1 t-hold Latched...
Page 147: Configuration Of The Analog Outputs
3 Hardware 3.10.4 Configuration of the Analog Outputs 3.10.4 Configuration of the Analog Outputs The Analog Outputs can be programmed to output for three different ranges of either »0‒ 20mA«, »4‒20 mA«, or »0‒10 Volts«. These outputs can be configured by the user to represent the status of user-programmed parameters that are available from the relay.
Page 148 3 Hardware 3.10.4 Configuration of the Analog Outputs Example – Field Data: • Current Transformer: CT pri = 200 A; CT sec = 5 A • • Voltage Transformer: VT pri = 10 kV; VT sec = 100 V • •...
Page 149 3 Hardware 3.10.4 Configuration of the Analog Outputs Since the sign of Power Factor PF follows the sign of Active Power P, one cannot conclude from the sign whether this is capacitive or inductive Reactive Power. Hence, for Analog Output assignment the setting for PF output range uses a Power Factor with a “Sign Convention”: a positive sign (+) PF, if Active and Reactive Power have the same sign a negative sign (−) PF, if Active and Reactive Power have different signs...
Page 150: Communication Protocols
4 Communication Protocols 4.1 General SCADA (Communication) Setting Communication Protocols General SCADA (Communication) Setting The set of available SCADA protocols depends on the ordered hardware variant (see ↪2.2.1 Order Form of the Device, ↪⇱). You have to define which one of the available SCADA protocols the MRM4 shall use. This is done by setting [Device planning / Projected Elements] »Protocol«...
Page 151: Tcp/Ip Settings
4 Communication Protocols 4.2 TCP/IP Settings TCP/IP Settings NOTICE! Establishing a connection via TCP/IP to the device is only possible if your device is equipped with an Ethernet Interface (RJ45). Contact your IT administrator in order to establish the network connection. Within menu [Device Para / TCP/IP / TCP/IP config] the TCP/IP settings have to be set.
Page 152: Iec 61850
4 Communication Protocols 4.3 IEC 61850 IEC 61850 Introduction To understand the functioning and mode of operation of a substation in an IEC 61850 automation environment, it is useful to compare the commissioning steps with those of a conventional substation in a Modbus TCP environment. In a conventional substation the individual IEDs (Intelligent Electronic Devices) communicate in vertically direction with the higher level control center via SCADA.
Page 153 4 Communication Protocols 4.3 IEC 61850 IEC 61850 configuration (software wiring): • Exporting an IID file from each device • • Configuration of the substation (generating an SCD file) • • Transmit SCD file to each device. • IEC 61850 Edition 1 and Edition 2 As of Version 3.9, the MRM4 support both Edition 1 and Edition 2 of the SCADA protocol IEC 61850.
Page 154 4 Communication Protocols 4.3 IEC 61850 • H&S, Hard- & Software Technologie GmbH & Co. KG, Dortmund (Germany) • (www.hstech.de). • Applied Systems Engineering Inc. (www.ase-systems.com) • Import of the .SCD file into the device When the substation configuration is completed, the *.SCD file has to be transmitted to all connected devices.
Page 155: Dnp3
4 Communication Protocols 4.4 DNP3 DNP3 DNP (Distributed Network Protocol) is for data and information exchange between SCADA (Master) and IEDs (Intelligent Electronic Devices). The DNP protocol has been developed in first releases for serial communication. Due to further development of the DNP protocol, it offers now also TCP and UDP communication options via Ethernet.
Page 156 4 Communication Protocols 4.4 DNP3 Point Mapping Binary Inputs Double Bit Inputs Pulse Signal DNP Master Counters Analog Inputs Protective Relay Fig. 46: Point Mapping NOTICE! Please take into account that the designations of inputs and outputs are set from the Masters perspective.
Page 157 4 Communication Protocols 4.4 DNP3 • Counters (Counters to be sent to the master) • Assign the required counter (e. g. the number of operating hours »Sys . Operating hours Cr« to an available parameter [Device Para / DNP3 / Point map / BinaryCounter] »DoubleBitInput 0…7«.
Page 158: Application Example: Setting A Relay
4 Communication Protocols 4.4.1 Application Example: Setting a Relay 4.4.1 Application Example: Setting a Relay ≥1 Visual Logic Editor: LE 1 & LE1.Gate Out Logic gate LE1.Input1 Timer LE1.Timer Out DNP . BinaryOutput1 LE1.Input2 - . - ≥1 Latch LE1.Out LE1.Input3 0.00 - .
Page 159 4 Communication Protocols 4.4.2 Deadband Settings in DNP3 Voltage (via “TU” Voltage Measuring Card) ☼ • The voltage transformer card “TU” covers the voltage range 0 – 800 V. (See the • “Technical Data” chapter in the manual.) In other words, the maximum value is 800 V.
Page 160 4 Communication Protocols 4.4.2 Deadband Settings in DNP3 Earth (Ground) Current (1 A CT) ☼ • The standard current transformer card “TI” covers the range 0 – 25 A. • • The rated current (secondary) is 1 A. • • Therefore the conversion factor from the percentage of the rated current to the •...
Page 161 4 Communication Protocols 4.4.2 Deadband Settings in DNP3 Power (5 A CT and “TU” Voltage Measuring Card) ☼ • The value range is 0 – 160000 VA. • • The rated power (secondary) is based on the rated voltage and the rated current •...
Page 162 4 Communication Protocols 4.4.2 Deadband Settings in DNP3 cos(φ) ☼ This value is special because there is no rated value. • The maximum value is 1.0. • • For example, a deadband value of 0.01 is required. (It makes not much sense to •...
Page 163: Configurable Communication Protocols
4 Communication Protocols 4.5 Configurable Communication Protocols Configurable Communication Protocols Some of the SCADA protocols supported by the MRM4 have an option to adapt the mapping of data objects to the protocol-internal addresses to one’s own needs. This can be done using a separate PC software tool, SCADApter.
Page 164: Iec60870-5-103
4 Communication Protocols 4.5.1 IEC60870-5-103 4.5.1 IEC60870-5-103 In order to use the IEC60870-5-103 protocol it has to be assigned to the X103 Interface within the Device Planning. The device will reboot after setting this parameter. Moreover, the IEC103 protocol has to be activated by setting [Device Para / IEC103] »Function«...
Page 165 4 Communication Protocols 4.5.1 IEC60870-5-103 The section for the identification of the software contains three digits of the device code for the identification of the device type. Beside the upper mentioned identification number the device generates a communication start event. Time Synchronization Time and date of the relay can be set by means of the time synchronization function of the IEC60870-5-103 protocol.
Page 166 4 Communication Protocols 4.5.1 IEC60870-5-103 • External activation, by assigning a signal to the setting parameter »Ex activate Block • MD« Test Mode The relay supports the test mode (Cause of Transmission 7). There are two ways to activate the test mode: •...
Page 167: Iec 60870-5-104
4 Communication Protocols 4.5.2 IEC 60870‑5‑104 4.5.2 IEC 60870‑5‑104 The IEC 60870‑5‑104 protocol is a standardized communication protocol. It is available with HighPROTEC devices that are equipped with an Ethernet interface. Although there is a standard mapping of data-points that comes with the MRM4 it is expected that most users want to adapt the mapping to their own needs.
Page 168 4 Communication Protocols 4.5.2 IEC 60870‑5‑104 Data-Point Mapping of Measurement Values In the SCADApter configuration tool, there is a setting »Deadband« for each measured (or statistical) value. It defines the value change that will cause the updated value to be transmitted again.
Page 169 4 Communication Protocols 4.5.2 IEC 60870‑5‑104 2020-06-06_First_IEC104_Mapping.HptSMap - SCADApter File Edit Settings Help IEC104 Information Object Data type Deadband Scaling/Norm factor Value Type Exclude from GI Comment Description ▲ ▲ Address ▼ 0001 VT.VL12 Short float 1.0 Actual value Measured value: Phase-to-phase voltage ▲...
Page 170 4 Communication Protocols 4.5.2 IEC 60870‑5‑104 Activate a User-Defined Data-Point Mapping For information about how to create a mapping file and download or upload it to the MRM4, see the SCADApter documentation and ↪4.5.5 Data-Point Mapping Using the SCADApter. (Since the data-point mapping is a general feature that is usable for several communication protocols in the same way, it is described separately.) MRM4 MRM4-3.10-EN-MAN...
Page 171: Modbus
4 Communication Protocols 4.5.3 Modbus® 4.5.3 Modbus® ® Modbus Protocol Configuration ® The Modbus communication protocol is available with HighPROTEC devices that are equipped with either a serial interface (“Modbus RTU”) or an Ethernet interface (“Modbus TCP”). The standard protocol definition (mapping of data-points) that comes with the MRM4 is sufficient for most applications, so that only a few settings have to be made (see below).
Page 172 4 Communication Protocols 4.5.3 Modbus® ® To allow configuration of the devices for Modbus connection, some default values of the control system must be available. Setup At first the Modbus protocol has to be selected as the SCADA protocol to be used: Set [Device planning / Projected Elements] »Protocol«...
Page 173 4 Communication Protocols 4.5.3 Modbus® Information on physical communication errors, such as: • Baudrate Error • • Parity Error ... • can be obtained from the event recorder. Error Handling – Errors on protocol level If, for example, an invalid memory address is enquired, error codes will be returned by the device that need to be interpreted.
Page 174 4 Communication Protocols 4.5.3 Modbus® SCADApter NOTICE! Note that the use of the Modbus Tunnel (see Smart view User Manual) is possible only with the Standard Modbus mapping. In other words, this particular connection type is not compatible with user-defined datapoint mappings. The SCADApter is a PC tool of its own, therefore the details of its used are described in the SCADApter manual.
Page 175 4 Communication Protocols 4.5.3 Modbus® ◦ “Float” — Number in floating point representation (according to IEEE 754) ◦ • The bit size is automatically set according to the format of the data-object. • • The “Latched” checkbox decides whether the Modbus information shall be latched •...
Page 176: Profibus
4 Communication Protocols 4.5.4 Profibus 4.5.4 Profibus Configuration of the Devices After selecting Profibus as the SCADA protocol (via setting [Device planning / Projected Elements] »Protocol« = “Profibus”), enter the menu branch [Device Para / Profibus] ; there you have to set the following communication parameter: •...
Page 177: Data-Point Mapping Using The Scadapter
4 Communication Protocols 4.5.5 Data-Point Mapping Using the SCADApter 4.5.5 Data-Point Mapping Using the SCADApter Software Tools The setup procedure for a user-defined data-point mapping always works the same way for all SCADA protocols that support user-defined mappings. A mapping of data objects is always based on a separate file of file-type (extension) *.HptSMap.
Page 178 4 Communication Protocols 4.5.5 Data-Point Mapping Using the SCADApter Device Para/IEC104/Config. Data Obj. Smart view Send SCADA configuration to the device? SCADA Data Point Mapping Configuration Recently used File: MyIEC104_Mapping.HptSMap Select a SCADA Mapping File from Disk and send it to the connected Device Receive SCADA Mapping File from Smart view connected Device and save it on Disk...
Page 179: Time Synchronization
4 Communication Protocols 4.6 Time Synchronization Time Synchronization The device gives the user the ability to synchronize the device with a central time generator. This provides the following advantages: • The time does not drift from the reference time. A continuously accumulating •...
Page 180 4 Communication Protocols 4.6 Time Synchronization Modbus TCP Hardware Interface Recommended Application RJ45 (Ethernet) Limited recommendation when Modbus TCP communication protocol is used and when no IRIG-B real time clock or an SNTP server is available. IEC 60870‑5‑103 Hardware Interface Recommended Application RS485, D-SUB or Fiber Optic Recommended when using the IEC 60870‑5‑103...
Page 181 4 Communication Protocols 4.6 Time Synchronization Time Synchronization with UTC time (recommended): Time synchronization is usually done using UTC time. This means for example that an IRIG-B time generator is sending UTC time information to the protection relay. This is the recommended use case, since here a continuous time synchronization can be ensured.
Page 182: Sntp
4 Communication Protocols 4.6.1 SNTP 4.6.1 SNTP NOTICE! Important pre-condition: The device needs to have access to an SNTP server via the connected network. This server preferably should be installed locally. Principle – General Use SNTP is a standard protocol for time synchronisation via a network. For this at least one SNTP server has to be available within the network.
Page 183 4 Communication Protocols 4.6.1 SNTP Recommended is a locally installed SNTP server with an accuracy of ≤200 µsec. If this cannot be realised, the connected server's excellence can be checked in the menu [Operation / Status Display / TimeSync / SNTP]: •...
Page 184: Irig-B00X
4 Communication Protocols 4.6.2 IRIG-B00X 4.6.2 IRIG-B00X NOTICE! Requirement: An IRIG-B00X time code generator is needed. IRIG-B004 and higher will support/transmit the “year information”. If you are using an IRIG time code that does not support the “year information” (IRIG- B000, IRIG-B001, IRIG-B002, IRIG-B003), you have to set the “year”...
Page 185 4 Communication Protocols 4.6.2 IRIG-B00X IRIG‑B Commissioning Activate the IRIG‑B synchronization within the menu [Device Para / Time / TimeSync]: • Select »IRIG‑B« in the time synchronization menu. • • Set the time synchronization in the [IRIG-B] menu to “Active”. •...
Page 186: Protective Elements
5 Protective Elements 5.1 Module Prot: General Protection Protective Elements Module Prot: General Protection The module »Module General Protection« (»Prot«) serves as outer frame for all other protection modules, i. e. they are all enclosed by this module. WARNING! If in the »Prot« module the parameter [Protection Para / Global Prot Para / Prot] »Function«...
Page 187 5 Protective Elements 5.1 Module Prot: General Protection • Optionally make assign a blocking signal to »ExBlo2«. • If any of the assigned signals becomes true, then the entire protection is blocked (as long as any of these signals stays true). Blocking all Trip Commands Permanently In order to permanently block all trip commands navigate to the menu [Protection Para / Global Prot Para / Prot]:...
Page 188: Basics Of A Protection Function
5 Protective Elements 5.1.1 Basics of a Protection Function 5.1.1 Basics of a Protection Function GeneralProt_Y09 name = Each trip of an active, trip authorized protection module will lead to a general trip. Please Refer To Diagram: Blockings (Stage is not deactivated and no active blocking signals) &...
Page 189 5 Protective Elements 5.1.1 Basics of a Protection Function • Since also other protection elements can trigger a General Alarm one can say that • the General Alarm is a collective signal OR-ed from all protection-specific alarms. Trip • If the fault criterion is still detected after a protection-specific timer stage »name . •...
Page 190 5 Protective Elements 5.1.1 Basics of a Protection Function Prot.Alarm GeneralProt_Y20 Each phase selective alarm of a module (I, IG, V, VX depending on the device type) will lead to a phase selective general alarm (collective alarm). I[1]...[n] . Alarm L1 ≥1 Prot .
Page 191 5 Protective Elements 5.1.1 Basics of a Protection Function Prot.Trip GeneralProt_Y19 Each phase selective trip of a trip authorized module (I, IG, V, VX depending on the device type) will lead to a phase selective general trip. I[1]...[n] . Trip L1 ≥1 Prot .
Page 192 5 Protective Elements 5.1.1 Basics of a Protection Function ◦ If the fault persists after a settable timer has elapsed – see also ◦ ↪5.1.1 Basics of a Protection Function: A trip signal »Trip« is issued, which is also (internally) reported to the master module »Prot«.
Page 193: Blockings
5 Protective Elements 5.1.2 Blockings 5.1.2 Blockings The device provides a function for temporary and permanent blocking of the complete protection functionality or of single protection stages. WARNING! Make absolutely sure that no illogical or even life-threatening blockings are allocated. Make sure that you do not carelessly deactivate protection functions which have to be available according to the protection concept.
Page 194 5 Protective Elements 5.1.2 Blockings • Within the general protection parameters a signal has to be assigned • to »ExBlo1« or »ExBlo2«. The blocking only becomes active when the assigned signal is active. To block the tripping command of a protection stage temporarily by an active assignment. The tripping command of any of the protection modules can be blocked from external.
Page 195: Blocking The Tripping Command
5 Protective Elements 5.1.2.1 Blocking the Tripping Command 5.1.2.1 Blocking the Tripping Command Trip blockings GeneralProt_Y02 name = all modules that are blockable Prot . Blo TripCmd Inactive Prot . Blo TripCmd Active ≥1 name . Blo TripCmd Prot . ExBlo TripCmd Inactive Active Prot .
Page 196: Activate, Deactivate Or Block A Protection Function Temporarily
5 Protective Elements 5.1.2.2 Activate, Deactivate or Block a Protection Function Temporarily 5.1.2.2 Activate, Deactivate or Block a Protection Function Temporarily The following diagram applies to all protective elements except those for which a module- specific diagram follows underneath: Blockings GeneralProt_Y05 name = all modules that are blockable Frequency is within the nominal frequency range.(*)(**)
Page 197: Activate, Deactivate Or Block The Phase Current Modules
5 Protective Elements 5.1.2.3 Activate, Deactivate or Block the Phase Current Modules 5.1.2.3 Activate, Deactivate or Block the Phase Current Modules Current protective functions cannot only be blocked permanently (»Function« = “Inactive”) or temporarily by any blocking signal from the »assignment list«, but also by »reverse Interlocking«.
Page 198 5 Protective Elements 5.1.2.3 Activate, Deactivate or Block the Phase Current Modules Blockings (**) Pdoc_Y03 I = I[1]...[n] Frequency is within the nominal frequency range.(*)(**) & Please Refer To Diagram: Prot Prot. Active (The General Protection module is not deactivated or blocked) VRestraint &...
Page 199: Activate, Deactivate Or Block The Ground (Earth) Current Modules
5 Protective Elements 5.1.2.4 Activate, Deactivate or Block the Ground (Earth) Current Modules 5.1.2.4 Activate, Deactivate or Block the Ground (Earth) Current Modules Ground (earth) current protective functions cannot only be blocked permanently (»Function« = “Inactive”) or temporarily by any blocking signal from the »assignment list«, but also by »reverse Interlocking«.
Page 200 5 Protective Elements 5.1.2.4 Activate, Deactivate or Block the Ground (Earth) Current Modules Blockings (**) Edoc_Y03 name = IG[1]...[n] Frequency is within the nominal frequency range.(*)(**) & Please Refer To Diagram: Prot Prot. Active (The General Protection module is not deactivated or blocked) name .
Page 201: Mstart - Motor Start And Control Module [48, 66]
5 Protective Elements 5.2 MStart – Motor Start and Control Module [48, 66] MStart – Motor Start and Control Module [48, 66] General – Principle Use The motor start control logic is the core control and protective function for a motor protection device.
Page 202 5 Protective Elements 5.2 MStart – Motor Start and Control Module [48, 66] Motor Operation States TRN Criterion Transition on time only Transition on current only Transition on current OR time From other trip modules Transition on current AND time Start Block Stop...
Page 203: Motor Start / Transition Trips
5 Protective Elements 5.2.1 Motor Start / Transition Trips 5.2.1 Motor Start / Transition Trips Trip During Motor Start MotorStart_Y02 [1.] MStart . ColdStartSeq MStart . TRNT MStart . TRNC IL1 Ib & IL2 Ib MStart . TransitionTrip IL3 Ib MStart .
Page 204 5 Protective Elements 5.2.1 Motor Start / Transition Trips The motor is tripped during the start phase, in case that any of the following occurs: • [1.] The Start Control detects an unsuccessful start. • This is signaled as »MStart . TransitionTrip«. (See ↪5.2.1.1 Start Control.)
Page 205: Start Control
5 Protective Elements 5.2.1.1 Start Control 5.2.1.1 Start Control »TRNC« »TRNT« 30% ⋅ Ib »TRN Criterion« = “TRN I”: Stop Start »TRN Criterion« = “TRN T or I”: Stop Start »TRN Criterion« = “TRN TIME”: Stop Start »TRN Criterion« = “TRN T and I”: Stop Start The parameters for the Start Control have to be set within menu [Protection Para / Global...
Page 206 5 Protective Elements 5.2.1.1 Start Control • “TRN TIME” — Transition to RUN after the set time »TRNT«. The current is ignored. • • “TRN I” — Transition when the starting current has dropped below the • setting »TRNC«. If the »TRNT« timer elapses before the current drops below the transition level »TRNC«, the motor trips.
Page 207: Incomplete Sequence (Insq)
5 Protective Elements 5.2.1.2 Incomplete Sequence (InSq) 5.2.1.2 Incomplete Sequence (InSq) The Incomplete Sequence function requires an input from the report back contact from the process that the motor is running. Shortly after the motor starts, the report back contact provides an indication that the process has started to operate as expected.
Page 208: Zero Speed Switch (Zss On Or Off)
5 Protective Elements 5.2.1.3 Zero Speed Switch (ZSS ON or OFF) 5.2.1.3 Zero Speed Switch (ZSS ON or OFF) The setting [Protection Para / Global Prot Para / MStart / Start Control] »ZSS« enables the function that verifies if the motor begins to physically spin after a start. It requires a zero-speed switch (digital switch) on the motor that is closed at rest and opens as the rotor reaches 5%…10% of its normal speed.
Page 209: Reversing Or Non-Reversing Starter
5 Protective Elements 5.2.1.4 Reversing or Non-Reversing Starter 5.2.1.4 Reversing or Non-Reversing Starter The MRM4 uses the phase currents to calculate the symmetrical components (positive and negative system). Based on these the MRM4 determines the phase rotation of the applied system. If the measurements fit to the setting [Field Para] »Phase Sequence«, the signal »MStart .
Page 210: Motor Start Blocked
5 Protective Elements 5.2.2 Motor Start Blocked 5.2.2 Motor Start Blocked Potential Blocking Conditions Motor Start Blocked MotorStart_Y01 [Bl.1] MStart . SPH Fc MStart . Inactive MStart . SPH Remaining Active & Φ MStart . SPHBlocked MStart . ColdStartSeq [Bl.2] &...
Page 211 5 Protective Elements 5.2.2 Motor Start Blocked The reasons for a Motor Start Blocking can be as follows: • [Bl.1] A blocking because of too many starts per hour is signaled by »MStart . • SPHBlocked«. ↪5.2.2.1 Start Limits. • [Bl.2] A blocking because the waiting time between starts has not elapsed yet is •...
Page 212: Start Limits
5 Protective Elements 5.2.2.1 Start Limits 5.2.2.1 Start Limits Because motor starting consumes a considerable amount of thermal energy compared to its normal load conditions, the number of starts in a given time period must be monitored and controlled. The MRM4 has three criteria that contribute to the start limits monitoring. These are: •...
Page 213: Anti-Backspin Timer - "Abs Timer
5 Protective Elements 5.2.2.2 Anti-Backspin Timer – »ABS Timer« start before it exhausts »NOCS«. All starts after this are subject to time and count limits imposed by »TBS« and »SPH«. If the motor reaches the »NOCS« limit in a cold start sequence, the »NOCSBlocked« block signal is set and the »TBS«...
Page 214: Delayed Protection Enabling During Motor Starts
5 Protective Elements 5.2.3 Delayed Protection Enabling During Motor Starts 5.2.3 Delayed Protection Enabling During Motor Starts When the MRM4 detects a motor start, various timers are started. Each of these timers blocks a protective function until the set delay expires. This way false trip decisions by these protection functions during the motor start are prevented.
Page 215 5 Protective Elements 5.2.3 Delayed Protection Enabling During Motor Starts »I[x] . ExBlo dur. Mot.Strt« = “MStart . Blo-IOCStart” • GOC (Ground fault): • The setting »t-Blo-GOC« defines the time (in seconds) after a start is recognized until the »IG[x]« protection modules (ANSI 50X, 50R and 50G) are enabled. Note that within each »IG[x]«...
Page 216: Long Acceleration Time (Lat)
5 Protective Elements 5.2.4 Long Acceleration Time (LAT) 5.2.4 Long Acceleration Time (LAT) The LAT function is enabled at [Protection Para / Global Prot Para / MStart / Start Control] »LAT Fc«. Then the timer »LAT Timer« defines a time interval during which the motor is permitted to accelerate a high-inertia load, which is longer than the locked-rotor time.
Page 217: Motor Cold / Warm Detection
5 Protective Elements 5.2.5 Motor Cold / Warm Detection 5.2.5 Motor Cold / Warm Detection The motor will be considered as cold (»Cold sequ = true«) after being in the »stop« mode for more than one hour if the time between starts timer is set to a lower value than 1 hour. Else, the motor will fall back into the »cold«...
Page 218: Emergency Override
5 Protective Elements 5.2.6 Emergency Override 5.2.6 Emergency Override The Emergency Override function can be enabled or disabled via the setting [Protection Para / Global Prot Para / MStart / Start Control] »EmgOvr«. The setting value also determines whether this function can be executed by a Digital Input (“DI”) or by a softkey at the HMI (“HMI”) or both (“DI or HMI”).
Page 219: Thm - Thermal Model [49M, 49R]
• I₁ = the per unit stator positive-sequence current. • • K₂ = setting »K2«, see above. • The value of K₂ = 6.01 should be used to mimic the thermal model of SEG's MP‑3000 and MP‑4000 motor relays. • I₂ = per unit stator negative-sequence current. •...
Page 220 5 Protective Elements 5.3 ThM – Thermal Model [49M, 49R] With this, the thermal limit curve can be expressed as the following: ⋅T TripTime = eff.heat under the condition that > k ⋅ CT eff.heat prim where • k = setting »k-Factor «, see above. •...
Page 221 5 Protective Elements 5.3 ThM – Thermal Model [49M, 49R] Stator Temperature [°C] Fig. 55: Effective Current Threshold vs. Maximum Stator Temperature. Without stator temperature, given the current threshold of 1.0 ⋅ Ib (FLA) and 2.0 ⋅ Ib (FLA) of the stator phase current, the thermal model will use the full thermal capacity in 139.54 seconds.
Page 222 5 Protective Elements 5.3 ThM – Thermal Model [49M, 49R] 1000 Multiple of Full Load Ampere SF = 1, TC = 100% Ith = 150%, Tth = 80%⋅TC Fig. 57: Thermal Replica Model Limit and Trip Curves with RTD = 100°C. In the Thermal Replica Model Trip Curves with and without RTD, the unmarked lines are the thermal limit curves and the marked lines are the trip curves.
Page 223: Lrc - Locked Rotor During Start
5 Protective Elements 5.3.1 LRC - Locked Rotor during Start 5.3.1 LRC - Locked Rotor during Start Functional Description The Locked-rotor protection function is an integral part of the thermal model and is used to protect the motor in the event that the motor fails to start or accelerate after being energized.
Page 224: Utc - Ultimate Trip Current
5 Protective Elements 5.4 UTC – Ultimate Trip Current UTC – Ultimate Trip Current Functional Description The Ultimate Trip Current (UTC) sets the current level at which a trip eventually occurs when no RTD stator temperature data is available. The current level is settable to a value as a multiples of »Ib« (Full Load Amps, FLA). This value represents the vertical line on the upper portion of the non-RTD as shown in the protection trip curve labeled Motor Protection Curve Example 2 (without RTD).
Page 225: Motor Protection Curves
5 Protective Elements 5.4.1 Motor Protection Curves 5.4.1 Motor Protection Curves Ultimate trip based on % of full-load amperes (100% shown) Maximum allowable stalll time (30 sec cold start) (15 sec cold start) I²T curves (I is an effective (10 sec cold start) current including (5 sec cold start) I1 and kI2.)
Page 226 5 Protective Elements 5.4.1 Motor Protection Curves Ultimate trip level: 100 % full-load amperes Underload trip level 60% full-load Note: I is a amperes combination of positive (I ) and negative (I Underload run sequence delay: 5 Sec. motor currents Motor running with load Max.
Page 227 5 Protective Elements 5.4.1 Motor Protection Curves Stator temperature measured directly Stator winding temperature (trip) function is set point Note: I is a Underload combination of trip level positive (I ) and 60% full-load negative (I amperes sequence motor currents Motor running with load Underload run...
Page 228: Mls - Mechanical Load Shedding
5 Protective Elements 5.5 MLS – Mechanical Load Shedding MLS – Mechanical Load Shedding Functional Description In some applications, the protective device can forestall a JAM alarm or trip, or a thermal trip, by sending a signal to the process to reduce loading. The load-shedding function, if enabled, closes or opens a relay contact to shed process load when the motor load current goes above the threshold settable at [Protection Para / Set 1…4 / MLS] »Pickup Threshold«, for a time exceeding the delay [Protection Para / Set 1…4 / MLS] »t-Pickup Delay«.
Page 229: Commissioning: Mechanical Load Shedding
5 Protective Elements 5.5.1 Commissioning: Mechanical Load Shedding 5.5.1 Commissioning: Mechanical Load Shedding Object to be tested • Testing the pick-up and drop-out tresholds • • Testing the delay times • Necessary means • 3-phase current source • • Ammemeter •...
Page 230 5 Protective Elements 5.5.1 Commissioning: Mechanical Load Shedding The measured tripping delays and threshold values comply with those values, specified in the adjustment list. Permissible deviations/tolerances can be found under Technical data (↪13.1 Technical Data). MRM4 MRM4-3.10-EN-MAN...
Page 231: Jam - Locked Rotor Protection [51Lr]
5 Protective Elements 5.6 Jam – Locked Rotor Protection [51LR] Jam – Locked Rotor Protection [51LR] Description When the motor is running, a current increase above normal load may be an indication of a malfunction in the load. JAM protection recognizes mechanical problems, such as broken drive gears.
Page 232: Commissioning: Jam [51Lr]
5 Protective Elements 5.6.1 Commissioning: JAM [51LR] Use the start delay to block tripping and alarming until the motor current drops to continuous load level. Use run delays to avoid false alarms or trips for load transients. Functionality JAM_Y01 Jam = Jam[1]...[n] Please Refer To Diagram: Blockings (Stage is not deactivated and no active blocking signals) Jam .
Page 233 5 Protective Elements 5.6.1 Commissioning: JAM [51LR] For testing the trip delay, a timer is to be connected to the contact of the associated trip relay. Feed in a testing current significantly smaller than the pick-up value, the test current has to be increased suddenly above the threshold value.
Page 234: I< - Undercurrent [37]
5 Protective Elements 5.7 I< – Undercurrent [37] I< – Undercurrent [37] Functional Description When the motor is running, a current reduction might indicate a malfunction in the load. Underload protection recognizes mechanical problems, such as a blocked flow or loss of back pressure in a pump, or a broken drive belt or drive shaft.
Page 235: Commissioning: Undercurrent [Ansi 37]
5 Protective Elements 5.7.1 Commissioning: Undercurrent [ANSI 37] the start delay to block tripping until the load stabilizes after a start. Use run delays to avoid false alarms or trips for load transients. I< UnderLoad_Y01 I< = I<[1]...[n] Please Refer To Diagram: Blockings (Stage is not deactivated and no active blocking signals) I<...
Page 236 5 Protective Elements 5.7.1 Commissioning: Undercurrent [ANSI 37] For testing the trip delay, a timer is to be connected to the contact of the associated trip relay. Feed in a testing current significantly greater than the pick-up value, the test current has to be decreased suddenly below the threshold value.
Page 237: I - Overcurrent Protection
5 Protective Elements 5.8 I – Overcurrent Protection I – Overcurrent Protection The Phase Overcurrent module »I« covers the following ANSI protection functions: • ANSI 50 — • ↪“ANSI 50, 51 – Definite / Inverse Time Overcurrent Protection, Non- Directional”, ↪5.8.1 Characteristics •...
Page 238: Characteristics
5 Protective Elements 5.8.1 Characteristics Alternatively the »Measuring method« can be set to “I2”. In this case the negative phase sequence current will be measured. This is to detect unbalanced faults. 5.8.1 Characteristics For each element the following characteristics are available and can be selected at [Protection Para / Set 1…4 / I-Prot / I[x]] »Char«: •...
Page 239 5 Protective Elements 5.8.1 Characteristics ◦ With option »Reset Mode« = “definite time”: The reset delay is settable ◦ at »tReset«. ◦ With option »Reset Mode« = “inverse time”: The reset delay is calculated based ◦ on the selected characteristics (for all characteristics except „DEFT“). For all characteristics except DEFT and the...
Page 240 5 Protective Elements 5.8.1.1 DEFT – Definite Time-Overcurrent 5.8.1.1 DEFT – Definite Time-Overcurrent DEFT t / s I> 0.01 I / In Trip delay for I > I , settable via [Protection Para / Set 1…4 / I-Prot / I[x]] »t«. >...
Page 241: Inverse-Time Characteristics (Phase Current)
5 Protective Elements 5.8.1.2 Inverse-Time Characteristics (Phase Current) 5.8.1.2 Inverse-Time Characteristics (Phase Current) See also ↪“Explanation for All Characteristics” for more information. Characteris‐ Trip Delay Reset Delay (only for »Reset Mode« = »Char« “inverse time”) τ ⎛ ⎞ ⋅ tChar α...
Page 242 5 Protective Elements 5.8.1.2 Inverse-Time Characteristics (Phase Current) Characteris‐ Trip Delay Reset Delay (only for »Reset Mode« = »Char« “inverse time”) t = c ⋅ tChar⋅ K t = c ⋅ tChar⋅ K ⎛ ⎞ ⎝ ⎠ Therm Flat See also ↪5.8.1.2.4 Thermal Curves (Phase Current) for more information on these “Thermal Curves”.
Page 243 5 Protective Elements 5.8.1.2.1 IEC 60255‑151 Curves (Phase Current) 5.8.1.2.1 IEC 60255‑151 Curves (Phase Current) 5.8.1.2.1.1 IEC Normal Inverse (IEC 60255‑151) »I[x] . Char« = IEC NINV t / s tChar= 0.05 0.01 0.01 I / I> (multiples of pickup) Fig.
Page 244 5 Protective Elements 5.8.1.2.1.2 IEC Very Inverse [VINV] (IEC 60255‑151) 5.8.1.2.1.2 IEC Very Inverse [VINV] (IEC 60255‑151) »I[x] . Char« = IEC VINV t / s tChar= 0.05 0.01 0.01 I / I> (multiples of pickup) Fig. 64: VINV: reset delay (left half, I ...
Page 245 5 Protective Elements 5.8.1.2.1.3 IEC Extremely Inverse - Characteristic (IEC 60255‑151) 5.8.1.2.1.3 IEC Extremely Inverse - Characteristic (IEC 60255‑151) »I[x] . Char« = IEC EINV 1000 t / s tChar= 0.01 0.05 0.01 I / I> (multiples of pickup) Fig. 65: EINV: reset delay (left half, I <...
Page 246 5 Protective Elements 5.8.1.2.1.4 IEC Long Time Inverse - Characteristic [LINV] (IEC 60255‑151) 5.8.1.2.1.4 IEC Long Time Inverse - Characteristic [LINV] (IEC 60255‑151) »I[x] . Char« = IEC LINV 1000 t / s tChar= 0.05 0.01 I / I> (multiples of pickup) Fig.
Page 247 5 Protective Elements 5.8.1.2.2 R Inverse [RINV] - Characteristic 5.8.1.2.2 R Inverse [RINV] - Characteristic »I[x] . Char« = RINV t / s tChar= 0.05 0.01 I / I> (multiples of pickup) Fig. 67: RINV: reset delay (left half, I ...
Page 248 5 Protective Elements 5.8.1.2.3 IEEE C37.112 Curves (Phase Current) 5.8.1.2.3 IEEE C37.112 Curves (Phase Current) 5.8.1.2.3.1 Moderately Inverse [MINV] - Characteristic (IEEE C37.112) »I[x] . Char« = “ANSI MINV” 1000 t / s tChar= 0.01 I / I> (multiples of pickup) Fig.
Page 249 5 Protective Elements 5.8.1.2.3.2 Very Inverse [VINV] (IEEE C37.112) 5.8.1.2.3.2 Very Inverse [VINV] (IEEE C37.112) »I[x] . Char« = “ANSI VINV” 1000 t / s tChar= 0.01 I / I> (multiples of pickup) Fig. 69: VINV: reset delay (left half, I ...
Page 250 5 Protective Elements 5.8.1.2.3.3 Extremely Inverse - Characteristic (IEEE C37.112) 5.8.1.2.3.3 Extremely Inverse - Characteristic (IEEE C37.112) »I[x] . Char« = “ANSI EINV” 1000 t / s tChar= 0.01 I / I> (multiples of pickup) Fig. 70: EINV: reset delay (left half, I ...
Page 251 5 Protective Elements 5.8.1.2.4 Thermal Curves (Phase Current) 5.8.1.2.4 Thermal Curves (Phase Current) Thermal Tripping Times The thermal tripping times include Therm Flat, IT, I2T, and I4T. They are defined by the following equation: t = 5 ⋅ tChar ⋅ K ⎛...
Page 252 5 Protective Elements 5.8.1.2.4.1 Therm Flat [TF] - Characteristic 5.8.1.2.4.1 Therm Flat [TF] - Characteristic »Char« = Therm Flat 1000 t / s tChar= 0.05 0.01 I / In (multiples of the nominal current) Fig. 71: Therm Flat tripping curve. Note that only the range I > I is actually effective.
Page 253 5 Protective Elements 5.8.1.2.4.2 IT - Characteristic 5.8.1.2.4.2 IT - Characteristic »Char« = IT 1000 t / s tChar= 0.05 0.01 0.01 I / In (multiples of the nominal current) Fig. 72: IT tripping curve. Note that only the range I > I is actually effective.
Page 254 5 Protective Elements 5.8.1.2.4.3 I2T - Characteristic 5.8.1.2.4.3 I2T - Characteristic »Char« = I2T 1000 t / s tChar= 0.05 0.01 0.01 I / In (multiples of the nominal current) Fig. 73: I2T tripping curve. Note that only the range I > I is actually effective.
Page 255 5 Protective Elements 5.8.1.2.4.4 I4T - Characteristic 5.8.1.2.4.4 I4T - Characteristic »Char« = I4T 1000 t / s tChar= 0.05 0.01 0.01 I / In (multiples of the nominal current) Fig. 74: I4T tripping curve. Note that only the range I > I is actually effective.
Page 256: Functionality
5 Protective Elements 5.8.2 Functionality 5.8.2 Functionality I[1] ... [n] Pdoc_Y19 I = I[1]...[n] Please Refer To Diagram: Blockings IH2 . Active & I . IH2 Blo IH2 Blo & I . Alarm L1 Inactive Active & & IH2 . Blo L1 I .
Page 257: I2> - Negative-Sequence Overcurrent [51Q]
5 Protective Elements 5.8.3 I2> – Negative-Sequence Overcurrent [51Q] 5.8.3 I2> – Negative-Sequence Overcurrent [51Q] For activating this function, the parameter [Protection Para / Set n / I-Prot / I[x]] »Measuring method« has to be set to “I2” in the parameter set of the corresponding overcurrent element I[x].
Page 258 5 Protective Elements 5.8.3 I2> – Negative-Sequence Overcurrent [51Q] I2>[1]...[n]: Pdoc_Y10 I2> = I[1]...[n]: Measuring method Measuring method Fundamental True RMS Please Refer To Diagram: Blockings IH2 . Active & I . IH2 Blo I . Alarm IH2 Blo Inactive Char &...
Page 259: I>> - Ioc Function
5 Protective Elements 5.8.4 I>> – IOC Function 5.8.4 I>> – IOC Function The instantaneous overcurrent function (IOC) or 50P is intended to protect in the event of a high-current fault. The example IOC setting used in the Motor Protection Curve (see the Motor Protection Curve Examples in the Ultimate Trip Current Section) is 12 times (1,200%) of FLA.
Page 260: Commissioning: Overcurrent Protection, Non-Directional [50, 51]
5 Protective Elements 5.8.5 Commissioning: Overcurrent Protection, non-directional [50, 51] 5.8.5 Commissioning: Overcurrent Protection, non-directional [50, 51] WARNING! Ensure that the actual overcurrent settings comply with the technical and thermal limits of the device, the CTs and the application! The MRM4 allows for overcurrent settings that are out of the permitted range of current values.
Page 261 5 Protective Elements 5.8.5 Commissioning: Overcurrent Protection, non-directional [50, 51] Procedure Testing the threshold values (3 x single-phase and 1 x three-phase) Each time feed a current which is about 3-5% above the threshold value for activation/ tripping. Then check the threshold values. Testing the total tripping delay (recommendation) Measure the total tripping times at the auxiliary contacts of the CB (CB tripping).
Page 262: Commissioning: Negative Sequence Overcurrent
5 Protective Elements 5.8.6 Commissioning: Negative Sequence Overcurrent 5.8.6 Commissioning: Negative Sequence Overcurrent Object to be tested Signals to be measured for each current protection function: the threshold values, total tripping time (recommended), or alternatively tripping delays and the dropout ratios. NOTICE! It is recommended to measure the total tripping time instead of the tripping time.
Page 263 5 Protective Elements 5.8.6 Commissioning: Negative Sequence Overcurrent including all timers can be reset instantaneously via [Operation / Reset] »Reset I-Prot«. Therefore, waiting times between tests can be eliminated. Please note: [Operation / Reset] »Reset I-Prot« resets all overcurrent-based functions at once.
Page 264: Ig - Ground (Earth) Overcurrent Protection [50N/G, 51N/G, 67N/G]
5 Protective Elements 5.9 IG – Ground (Earth) Overcurrent Protection [50N/G, 51N/G, 67N/G] IG – Ground (Earth) Overcurrent Protection [50N/G, 51N/G, 67N/G] The Ground Fault (Earth Overcurrent) module »IG« covers the following ANSI protection functions: • ANSI 50N/G • • ANSI 51N/G •...
Page 265: Characteristics (Ground Current)
5 Protective Elements 5.9.1 Characteristics (Ground Current) Measuring Method For each protection element it can be defined via setting »Measuring method«, whether the measurement is done on basis of the “Fundamental” or if “True RMS” measurement is used. IG Source / VG Source The parameters »IG Source«...
Page 266 5 Protective Elements 5.9.1 Characteristics (Ground Current) • »tChar« (for all characteristics except „DEFT“): The Tripping delay depends • on »tChar«, the selected characteristic and the fault current as a multiple of »IG>«. • The reset delay is settable via »Reset Mode«: •...
Page 267 5 Protective Elements 5.9.1.1 DEFT – Definite Time-Overcurrent 5.9.1.1 DEFT – Definite Time-Overcurrent DEFT t / s IG> 0.01 IG / IGnom Trip delay for IG > I , settable via [Protection Para / Set 1…4 / I-Prot / IG[x]] »t«. G>...
Page 268: Inverse-Time Characteristics (Ground Current)
5 Protective Elements 5.9.1.2 Inverse-Time Characteristics (Ground Current) 5.9.1.2 Inverse-Time Characteristics (Ground Current) See also ↪“Explanation for All Characteristics” for more information. Characteris‐ Trip Delay Reset Delay (only for »Reset Mode« = »Char« “inverse time”) τ ⎛ ⎞ ⋅ tChar α...
Page 269 5 Protective Elements 5.9.1.2 Inverse-Time Characteristics (Ground Current) Characteris‐ Trip Delay Reset Delay (only for »Reset Mode« = »Char« “inverse time”) t = c ⋅ tChar⋅ K t = c ⋅ tChar⋅ K ⎛ ⎞ ⎝ IGnom ⎠ Therm Flat See also ↪5.9.1.2.5 Thermal Curves (Ground Current) for more information on these...
Page 270 5 Protective Elements 5.9.1.2.1 IEC 60255‑151 Curves (Ground Current) 5.9.1.2.1 IEC 60255‑151 Curves (Ground Current) 5.9.1.2.1.1 IEC Normal Inverse (IEC 60255‑151) »IG[x] . Char« = IEC NINV t / s tChar= 0.05 0.01 0.01 IG / IG> (multiples of pickup) Fig.
Page 271 5 Protective Elements 5.9.1.2.1.2 IEC Very Inverse [VINV] (IEC 60255‑151) 5.9.1.2.1.2 IEC Very Inverse [VINV] (IEC 60255‑151) »IG[x] . Char« = IEC VINV t / s tChar= 0.05 0.01 0.01 IG / IG> (multiples of pickup) Fig. 76: VINV: reset delay (left half, IG ...
Page 272 5 Protective Elements 5.9.1.2.1.3 IEC Extremely Inverse - Characteristic (IEC 60255‑151) 5.9.1.2.1.3 IEC Extremely Inverse - Characteristic (IEC 60255‑151) »IG[x] . Char« = IEC EINV 1000 t / s tChar= 0.01 0.05 0.01 IG / IG> (multiples of pickup) Fig. 77: EINV: reset delay (left half, IG <...
Page 273 5 Protective Elements 5.9.1.2.1.4 IEC Long Time Inverse - Characteristic [LINV] (IEC 60255‑151) 5.9.1.2.1.4 IEC Long Time Inverse - Characteristic [LINV] (IEC 60255‑151) »IG[x] . Char« = IEC LINV 1000 t / s tChar= 0.05 0.01 IG / IG> (multiples of pickup) Fig.
Page 274 5 Protective Elements 5.9.1.2.2 R Inverse [RINV] - Characteristic 5.9.1.2.2 R Inverse [RINV] - Characteristic »IG[x] . Char« = RINV t / s tChar= 0.05 0.01 IG / IG> (multiples of pickup) Fig. 79: RINV: reset delay (left half, IG ...
Page 275 5 Protective Elements 5.9.1.2.3 IEEE C37.112 Curves (Ground Current) 5.9.1.2.3 IEEE C37.112 Curves (Ground Current) 5.9.1.2.3.1 Moderately Inverse [MINV] - Characteristic (IEEE C37.112) »IG[x] . Char« = “ANSI MINV” 1000 t / s tChar= 0.01 IG / IG> (multiples of pickup) Fig.
Page 276 5 Protective Elements 5.9.1.2.3.2 Very Inverse [VINV] (IEEE C37.112) 5.9.1.2.3.2 Very Inverse [VINV] (IEEE C37.112) »IG[x] . Char« = “ANSI VINV” 1000 t / s tChar= 0.01 IG / IG> (multiples of pickup) Fig. 81: VINV: reset delay (left half, IG ...
Page 277 5 Protective Elements 5.9.1.2.3.3 Extremely Inverse - Characteristic (IEEE C37.112) 5.9.1.2.3.3 Extremely Inverse - Characteristic (IEEE C37.112) »IG[x] . Char« = “ANSI EINV” 1000 t / s tChar= 0.01 IG / IG> (multiples of pickup) Fig. 82: EINV: reset delay (left half, IG ...
Page 278 5 Protective Elements 5.9.1.2.4 RXIDG 5.9.1.2.4 RXIDG »IG[x] . Char« = RXIDG tChar= t / s 0.05 0.01 IG / IG> (multiples of pickup) Fig. 83: RXIDG: trip delay, IG > I G> ↪“Explanation for All Characteristics” ↪5.9.1.2 Inverse-Time Characteristics (Ground Current) for details.
Page 279 5 Protective Elements 5.9.1.2.5 Thermal Curves (Ground Current) 5.9.1.2.5 Thermal Curves (Ground Current) Thermal Tripping Times The thermal tripping times include Therm Flat, IT, I2T, and I4T. They are defined by the following equation: t = 5 ⋅ tChar ⋅ K ⎛...
Page 280 5 Protective Elements 5.9.1.2.5.1 Therm Flat [TF] - Characteristic 5.9.1.2.5.1 Therm Flat [TF] - Characteristic »IG[x] . Char« = Therm Flat 1000 t / s tChar= 0.05 0.01 IG / IGnom (multiples of the nominal current) Fig. 84: Therm Flat tripping curve, example diagram for measured (non-sensitive) earth/ground current (51G).
Page 281 5 Protective Elements 5.9.1.2.5.2 IT - Characteristic 5.9.1.2.5.2 IT - Characteristic »IG[x] . Char« = IT 1000 t / s tChar= 0.05 0.01 IG / IGnom (multiples of the nominal current) Fig. 85: IT tripping curve, example diagram for measured (non-sensitive) earth/ground current (51G).
Page 282 5 Protective Elements 5.9.1.2.5.3 I2T - Characteristic 5.9.1.2.5.3 I2T - Characteristic »IG[x] . Char« = I2T 1000 t / s tChar= 0.05 0.01 IG / IGnom (multiples of the nominal current) Fig. 86: I2T tripping curve, example diagram for measured (non-sensitive) earth/ground current (51G).
Page 283 5 Protective Elements 5.9.1.2.5.4 I4T - Characteristic 5.9.1.2.5.4 I4T - Characteristic »IG[x] . Char« = I4T 1000 t / s tChar= 0.05 0.01 IG / IGnom (multiples of the nominal current) Fig. 87: I4T tripping curve, example diagram for measured (non-sensitive) earth/ground current (51G).
Page 284: Ground (Earth) Overcurrent - Functionality
5 Protective Elements 5.9.2 Ground (Earth) Overcurrent – Functionality 5.9.2 Ground (Earth) Overcurrent – Functionality IG[1] ... [n] Edoc_Y07 IG = IG[1] ... [n] Please Refer To Diagram: Blockings (Stage is not deactivated and no active blocking signals) & IG . IGH2 Blo IG .
Page 285 5 Protective Elements 5.9.2 Ground (Earth) Overcurrent – Functionality Prot – Earth fault – Alarm, Trip Edoc_Y16 IG . Superv. only & Alarm 27 14 IG . Alarm & Trip IG . Trip & IG . TripCmd Please Refer To Diagram: Trip blockings Tripping command deactivated or blocked.
Page 286: Special Notes On Earth Fault Current Transformers
5 Protective Elements 5.9.3 Special Notes on Earth Fault Current Transformers 5.9.3 Special Notes on Earth Fault Current Transformers Earth current measurement is usually been done with a summation current transformer (core-balance transformer). This CT has a large primary window through which all three- phase conductors can pass.
Page 287: Commissioning: Ground Fault Protection - Non-Directional [50N/G, 51N/G]
5 Protective Elements 5.9.4 Commissioning: Ground Fault Protection – non-directional [50N/G, 51N/G] 5.9.4 Commissioning: Ground Fault Protection – non-directional [50N/G, 51N/G] WARNING! In case of measured ground (earth) current: Ensure that the actual overcurrent settings comply with the technical and thermal limits of the device, the CTs and the application! The MRM4 allows for settings that are out of the permitted range of current values.
Page 288: I2> And %I2/I1> - Unbalanced Load [46]
5 Protective Elements 5.10 I2> and %I2/I1> – Unbalanced Load [46] 5.10 I2> and %I2/I1> – Unbalanced Load [46] The »I2>« Current Unbalance module works similar to the »V012« Voltage Unbalance module. The positive and negative sequence currents are calculated from the 3-phase currents.
Page 289 5 Protective Elements 5.10 I2> and %I2/I1> – Unbalanced Load [46] = tripping delay in seconds. Trip = thermal load capability of the object while running with 100% unbalanced load current. This is an intrinsic property of the protected object, and therefore it must be set via the Setting Group parameter »K«.
Page 290: Commissioning: Current Unbalance Module
5 Protective Elements 5.10.1 Commissioning: Current Unbalance Module NOTICE! The heat (thermal) energy is an auxiliary value that is calculated and maintained internally, i. e. it can neither be displayed at the HMI nor be retrieved via any communication protocol. Functionality of the Unbalanced Load Module I2>...
Page 291 5 Protective Elements 5.10.1 Commissioning: Current Unbalance Module • Three-phase current source with adjustable current unbalance; and • • Timer. • Procedure: Check the phase sequence: • Ensure that the phase sequence is the same as that set in the field parameters. •...
Page 292 5 Protective Elements 5.10.1 Commissioning: Current Unbalance Module • Feeding only phase A results in »%I2/I1 = 100%«, so the first condition »%I2/I1 >= • 2%« is always fulfilled. • Now increase the phase L1 current until the relay is activated. •...
Page 293: Exp - External Protection
5 Protective Elements 5.11 ExP - External Protection 5.11 ExP - External Protection NOTICE! All 4 stages of the external protection ExP[1] … ExP[4] are identically structured. By using the module External Protection the following can be incorporated into the device function: trip commands, alarms and blockades of external protection facilities.
Page 294 5 Protective Elements 5.11.1 Commissioning: External Protection • [Protection Para / Global Prot Para / ExP / ExP[n]] »Alarm« = “DI Slot X1 . DI 1” • • [Protection Para / Global Prot Para / ExP / ExP[n]] »Trip« = “DI Slot X1 . DI 2” •...
Page 295: Rtd Protection Module [26/38/49]
5 Protective Elements 5.12 RTD Protection Module [26/38/49] 5.12 RTD Protection Module [26/38/49] General – Principle Use NOTICE! The Resistance-based Temperature Detector (RTD) Protection Module uses temperature data that are provided by a Universal Resistance-based Temperature Detector (URTD) module (please refer to ↪5.13 URTDII Module Interface).
Page 296 5 Protective Elements 5.12 RTD Protection Module [26/38/49] ◦ Measured temperature values can be found in menu branch [Operation / ◦ Measured Values / URTD] • The channels LoadBear1, LoadBear2 belong to the group “Temperature of the Load • Bearing”: ◦...
Page 297 5 Protective Elements 5.12 RTD Protection Module [26/38/49] Alarm, Timeout Alarm and Trip Principle for each RTD Sensor RTD[1]...[n] RTD_Y01 For each channel [*1] RTD . Alarm RTD Temperature [*2] & RTD . RTD . Alarm Alarm Function Inactive RTD . t-Alarm-Delay Active RTD .
Page 298 5 Protective Elements 5.12 RTD Protection Module [26/38/49] RTD . Any Group RTD_Y02 All alarms, timeout alarms and trips of the groups are connected by an OR-gate in order to generate a group alarm, a group timeout alarm or and group trip. RTD .
Page 299 5 Protective Elements 5.12 RTD Protection Module [26/38/49] Collective Trip Signal By means of the trip command selection »TripCmdSelection« the user determines if the RTD element should use for the final trip signal the OR-connected default RTD trips or if the RTD element should use the OR-connected voting trips.
Page 300: Urtdii Module Interface
5 Protective Elements 5.13 URTDII Module Interface 5.13 URTDII Module Interface Principle – General Use The optional Universal Resistance-based Temperature Detector II (URTDII) Module provides temperature data to the protective device up to 12 RTDs embedded in the motor, generator, transformer, or cable connector and driven equipment.
Page 301 5 Protective Elements 5.13 URTDII Module Interface The figure above shows the fiber optic connections between the URTDII Module and the protective device. The protective device supports the optical fiber connection. Preassembled plastic optical fibers with connectors can be ordered from any distributor of optical fiber products.
Page 302 5 Protective Elements 5.13 URTDII Module Interface RTD Channel URTDII Con‐ Terminals Temperature Monitoring nection Name Point (avail. signals see Reference Manual) MotBear1 Group Ⅱ, RTD7 J10B-19, RTD Temperature of the Motor J10B-20 Bearing (1) MotBear2 Group Ⅱ, RTD8 J10B-15, RTD Temperature of the Motor J10B-16 Bearing (2)
Page 303 5 Protective Elements 5.13 URTDII Module Interface RTD, connect two of the cable conductors to one of the RTD leads as shown. Make this connection as close to the protected object as possible. Connect the third cable conductor to the remaining RTD lead. Connect the shield / drain wire to the Shield terminal as shown in the figure.
Page 304: Supervision
5 Protective Elements 5.14 Supervision 5.14 Supervision 5.14.1 CBF – Circuit Breaker Failure [50BF*/62BF] * = only available in protective relays that offer current measurement. 5.14.1.1 Principle – General Use The »CBF« module is used to provide backup protection in the event that a breaker fails to operate properly during fault clearing.
Page 305 5 Protective Elements 5.14.1.1 Principle – General Use Start/Trigger of the CBF Timer The setting [Protection Para / Set 1…4 / Supervision / CBF] »t-CBF« defines a supervision time: The timer is started once the CBF module is triggered. Even if the trigger signal drops again, this timer continues.
Page 306 5 Protective Elements 5.14.1.1 Principle – General Use You can find all external trips in the Reference Manual (MRM4‑3.10‑EN‑REF), Chapter “Selection Lists”, as a table entitled “External TripCmds”. • “Current TripCmds” — All current trips that are assigned to the breaker (within the •...
Page 307: 5.14.1.2 Functionality
5 Protective Elements 5.14.1.2 Functionality 5.14.1.2 Functionality Breaker Failure Protection for devices that offer current measurement CBF_Y01 * The Breaker Failure will be triggered only by those trip signals that are assigned onto the the breaker within theTrip Manager. Please Refer To Diagram: Blockings (Stage is not deactivated and no active blocking signals) CBF .
Page 308 5 Protective Elements 5.14.1.3 Commissioning Example: Supervision Scheme 50BF NOTICE! When testing, the applied test current must always be higher than the tripping threshold »I-CBF«. If the test current falls below the threshold while the breaker is in the “Off” position, no pickup will be generated. Procedure (Single-Phase): For testing the tripping time of the CBF protection, a test current has to be higher than the threshold value of one of the current protection modules that are assigned to trigger the CBF...
Page 309: Tcs - Trip Circuit Supervision [74Tc]
5 Protective Elements 5.14.2 TCS - Trip Circuit Supervision [74TC] 5.14.2 TCS - Trip Circuit Supervision [74TC] The trip circuit monitoring is used for monitoring if the trip circuit is ready for operations. The monitoring can be fulfilled in two ways. The first assumes only »Aux On (52a)« is used in the trip circuit.
Page 310: Commissioning: Trip Circuit Supervision [74Tc]
5 Protective Elements 5.14.2.1 Commissioning: Trip Circuit Supervision [74TC] Device digital input Trip CB & t-TCS ≥1 TCS . Alarm digital input & CB . Mode Closed Either trip coil L− Fig. 92: Connection example: Trip circuit supervision with two CB auxiliary contacts »Aux ON«...
Page 311 5 Protective Elements 5.14.2.1 Commissioning: Trip Circuit Supervision [74TC] Procedure, part 1 Simulate failure of the control voltage in the power circuits. Successful test result, part 1 After expiry of »t-TCS« the trip circuit supervision TCS of the device should signal an alarm. Procedure, part 2 Simulate a broken cable in the CB control circuit.
Page 312: Cts - Current Transformer Supervision [60L]
5 Protective Elements 5.14.3 CTS - Current Transformer Supervision [60L] 5.14.3 CTS - Current Transformer Supervision [60L] Wire breaks and failures within measuring circuits cause current transformer failures. The module »CTS« can detect a failure of the CT if the calculated earth current does not match the measured one.
Page 313: 5.14.3.1 Commissioning: Current Transformer Failure Supervision
5 Protective Elements 5.14.3.1 Commissioning: Current Transformer Failure Supervision limit value Kd · Imax ΔI Imax CAUTION! If the current is measured in two phases only (for instant only IL1/IL3) or if there is no separate earth current measuring (e.g. normally via a cable-type CT), the supervision function should be deactivated.
Page 314 5 Protective Elements 5.14.3.1 Commissioning: Current Transformer Failure Supervision • Set the limiting value of the CTS to »delta I=0.1*In«. • • Feed a three-phase, symmetrical current system (approx. nominal current) to the • secondary side. • Disconnect the current of one phase from one of the measuring inputs (the •...
Page 315: Phase Sequence Supervision
5 Protective Elements 5.14.4 Phase Sequence Supervision 5.14.4 Phase Sequence Supervision The MRM4 calculates the phase sequence at each measuring input (based on positive- sequence and negative-sequence components). The calculated phase sequence (i. e. „ACB“ or „ABC“) is permanently compared with the setting that has been made at [Field Para / General Settings] »Phase Sequence«.
Page 316: Control / Switchgear-Manager
6 Control / Switchgear-Manager Control / Switchgear-Manager WARNING! Misconfiguration of switchgear could result in death or serious injury. This e. g. is the case when opening a disconnector under load or when switching a ground connector to live parts of a system. Beside protection functions, protective relays more and more will take care about controlling switchgear, like breakers, load break switches, disconnectors and ground connectors.
Page 317 6 Control / Switchgear-Manager 6.1 Switchgear Control Page - Page Editor Switchgear Control ettings Help Representation of a Switchgear in the Page Editor Instances Circuit Breaker 1 Module TextSG Feeder (small) 1 Line 1 Line 2 Fig. 94: Control Page Example, with the “Circuit Breaker” being highlighted. Line 3 Line Head Although a switchgear always appears using a fixed representation in the Page Editor, with...
Page 318: 6.1 Switchgear Control
6 Control / Switchgear-Manager 6.1 Switchgear Control Local 0.000 A 0.000 A 0.000 A #(General_Control_Close_k) Fig. 97: Control Page Example, with the “Circuit Breaker” in open position. Local 0.000 A 0.000 A 0.000 A #(General_Control_Open_k) #(General_Control_Close_k) Fig. 98: Control Page Example, with the “Circuit Breaker” in faulty (or implausible) position.
Page 319 6 Control / Switchgear-Manager 6.1 Switchgear Control If neither “Break Capability” nor “Controlled” is set then the switchgear is only monitored, i.e. the status / position is available, but it is not meant to be actively used by the protection device. Changing the Order of the Switchgear in the Page Editor This chapter is only relevant for devices with more than one switching device.
Page 320: Settings Within The Protection Device
6 Control / Switchgear-Manager 6.1.1 Settings within the Protection Device 6.1.1 Settings within the Protection Device Assignment of Position Indications (Digital Inputs) Settings in the device menu [Control / SG / SG[x] / Pos Indicatrs Wirng]: • »Aux ON« — The CB is in ON-position if the state of the assigned signal is true (52a). •...
Page 321 6 Control / Switchgear-Manager 6.1.1 Settings within the Protection Device Interlockings Only available if the switchgear has been set “Controlled” in the Page Editor (see “‘Controlled’ Switchgear”). Settings in the device menu [Control / SG / SG[x] / Interlockings]: • »Interl ON1« … »Interl ON3« — Interlocking of the ON command (i. e. close •...
Page 322: Switch
6 Control / Switchgear-Manager 6.1.2 Switch 6.1.2 Switch Generic switching device. [Operation / Status Display / Control / SG[x]] »Pos« = 0 (Pos Indeterm) »Pos« = 1 (Pos OFF) »Pos« = 2 (Pos ON) »Pos« = 3 (Pos Disturb) Assignment of Position Indications (Digital Inputs) ↪“Assignment of Position Indications (Digital Inputs)”.
Page 323: Invisible Switch
6 Control / Switchgear-Manager 6.1.3 Invisible Switch 6.1.3 Invisible Switch Switching device which is not visible on the single-line diagram, but available in the protection device. (Since it is not existing on the single-line, it cannot be selected via the HMI (panel), and therefore cannot be operated manually.) [Operation / Status Display / Control / SG[x]] (Invisible)
Page 324: Circuit Breaker
6 Control / Switchgear-Manager 6.1.4 Circuit Breaker 6.1.4 Circuit Breaker Switching device, capable of making, carrying and breaking currents under normal conditions and also making, carrying for a specified duration and breaking currents under specified abnormal conditions (e.g. short circuit). [Operation / Status Display / Control / SG[x]] »Pos«...
Page 325: Circuit Breaker1
6 Control / Switchgear-Manager 6.1.5 Circuit Breaker1 6.1.5 Circuit Breaker1 Switching device, capable of making, carrying and breaking currents under normal conditions and also making, carrying for a specified duration and breaking currents under specified abnormal conditions (e.g. short circuit). [Operation / Status Display / Control / SG[x]] »Pos«...
Page 326: Disconnector (Isolator)
6 Control / Switchgear-Manager 6.1.6 Disconnector (Isolator) 6.1.6 Disconnector (Isolator) Switching device which provides, in the open position, an isolating distance. [Operation / Status Display / Control / SG[x]] »Pos« = 0 (Pos Indeterm) »Pos« = 1 (Pos OFF) »Pos« = 2 (Pos ON) »Pos«...
Page 327: Disconnector-Earthing Combination
6 Control / Switchgear-Manager 6.1.7 Disconnector-Earthing Combination 6.1.7 Disconnector-Earthing Combination A switch which combines a disconnector and an earthing switch. This switch has two positions (connected – earthed). [Operation / Status Display / Control / SG[x]] »Pos« = 0 (Pos Indeterm) »Pos«...
Page 328: Earthing Switch
6 Control / Switchgear-Manager 6.1.8 Earthing Switch 6.1.8 Earthing Switch Earthing Switch with short-circuit making capacity. [Operation / Status Display / Control / SG[x]] »Pos« = 0 (Pos Indeterm) »Pos« = 1 (Pos OFF) »Pos« = 2 (Pos ON) »Pos« = 3 (Pos Disturb) Assignment of Position Indications (Digital Inputs) ↪“Assignment of Position Indications (Digital Inputs)”.
Page 329: Fuse-Load Switch
6 Control / Switchgear-Manager 6.1.9 Fuse-Load Switch 6.1.9 Fuse-Load Switch Switching device capable of making, carrying and breaking normal currents, in which a fuse-link forms the moving contact. [Operation / Status Display / Control / SG[x]] »Pos« = 0 (Pos Indeterm) »Pos«...
Page 330: Fuse-Load Switch - Disconnector
6 Control / Switchgear-Manager 6.1.10 Fuse-Load Switch – Disconnector 6.1.10 Fuse-Load Switch – Disconnector Switching device capable of making, carrying and breaking normal currents. Satisfies in the open position the isolating requirements for a disconnector, in which a fuse-link forms the moving contact. [Operation / Status Display / Control / SG[x]] »Pos«...
Page 331: Fused-Disconnector (Isolator)
6 Control / Switchgear-Manager 6.1.11 Fused-Disconnector (Isolator) 6.1.11 Fused-Disconnector (Isolator) Switching device which provides, in the open position, an isolating distance, in which a fuse-link forms the moving contact. [Operation / Status Display / Control / SG[x]] »Pos« = 0 (Pos Indeterm) »Pos«...
Page 332: Load Switch
6 Control / Switchgear-Manager 6.1.12 Load Switch 6.1.12 Load Switch Switching device capable of making, carrying and breaking normal currents. [Operation / Status Display / Control / SG[x]] »Pos« = 0 (Pos Indeterm) »Pos« = 1 (Pos OFF) »Pos« = 2 (Pos ON) »Pos«...
Page 333: Load Switch - Disconnector
6 Control / Switchgear-Manager 6.1.13 Load Switch – Disconnector 6.1.13 Load Switch – Disconnector Switching device capable of making, carrying and breaking normal currents. Satisfies in the open position the isolating requirements for a disconnector. [Operation / Status Display / Control / SG[x]] »Pos«...
Page 334: Three Position Switch
6 Control / Switchgear-Manager 6.1.14 Three Position Switch 6.1.14 Three Position Switch A switch which combines a disconnector and an earthing switch. This switch has three positions (connected – disconnected – earthed) and is intrinsically safe against maloperation. [Operation / Status Display / Control / …] [SG[1]] »Pos«...
Page 335 6 Control / Switchgear-Manager 6.1.14 Three Position Switch NOTICE! The Command Execution Supervision will issue the following message in case of a switching attempt from the earthing position (directly) into the isolator position and vice versa: • [Operation / Status Display / Control / SG[x]] »CES SwitchDir« •...
Page 336: Withdrawable Circuit Breaker
6 Control / Switchgear-Manager 6.1.15 Withdrawable Circuit Breaker 6.1.15 Withdrawable Circuit Breaker Truck mounted (“Draw-Out”) circuit breaker. [Operation / Status Display / Control / SG[x]] (*) the same value for both switchgears – see also remark below. »Pos« = 0 (Pos Indeterm) »Pos«...
Page 337 6 Control / Switchgear-Manager 6.1.15 Withdrawable Circuit Breaker and in the non-withdrawn position. The signals of the control circuit (low voltage) plug have to be wired and configurated within the protective device. The control (supervision) is set to »Removed« when the control circuit plug is removed. The circuit breaker is set into the »Pos OFF«-position as long as the »Removed«-signal is active.
Page 338: Withdrawable Fuse Load Switch
6 Control / Switchgear-Manager 6.1.16 Withdrawable Fuse Load Switch 6.1.16 Withdrawable Fuse Load Switch Truck mounted fuse load switch. [Operation / Status Display / Control / SG[x]] (*) the same value for both switchgears – see also remark below. »Pos« = 0 (Pos Indeterm) »Pos«...
Page 339: Switchgear Configuration
6 Control / Switchgear-Manager 6.2 Switchgear Configuration long as it is in the closed position. The circuit breaker can be switched in the withdrawn and in the non-withdrawn position. The signals of the control circuit (low voltage) plug have to be wired and configurated within the protective device. The control (supervision) is set to »Removed«...
Page 340 6 Control / Switchgear-Manager 6.2 Switchgear Configuration Setting of Supervision / Moving Times In the menu [Control / SG / SG[x] / General Settings] the moving times »t-Move ON« and »t- Move OFF« of each individual switchgear have to be set. Dependent on the type of switchgear it can be necessary to set further parameters, like the dwell time »t-Dwell«.
Page 341 6 Control / Switchgear-Manager 6.2 Switchgear Configuration • »Pos Disturb« • • »Pos« (Signal: Circuit Breaker Position (0 = Indeterminate, 1 = OFF, 2 = ON, 3 = • Disturbed)) Supervision of the CLOSE command When a CLOSE command is initiated, the »t-Move ON« timer is started. While the timer is running, the »Pos Indeterm«...
Page 342 6 Control / Switchgear-Manager 6.2 Switchgear Configuration States of the Digital Validated Breaker Positions Inputs Aux ON-I Aux OFF-I Pos ON Pos OFF Indeterm Disturb (Moving (Moving timer timer elapsed) elapsed) Single Position Indication Aux ON or Aux OFF If the single pole indication is used, the »SI SingleContactInd« becomes true. The moving time supervision works only in one direction.
Page 343 6 Control / Switchgear-Manager 6.2 Switchgear Configuration Single Position Indication – Aux OFF If only the Aux OFF signal is used for the monitoring of the “OPEN command”, the switch command starts the moving timer. The Position Indication indicates an »Pos Indeterm«...
Page 344 6 Control / Switchgear-Manager 6.2 Switchgear Configuration Switchgear_Y02 Protection issues Trip Command (e.g. Overcurrent module) SG . TripCmd Trip command assigned and configured within the Trip manager SG . OFF incl TripCmd & Inactive Active SG . OFF incl TripCmd SG .
Page 345 6 Control / Switchgear-Manager 6.2 Switchgear Configuration Signal Breaker CLOSE Breaker OPEN Command Signal Breaker OPEN Breaker CLOSE Command Signal Breaker Ready Protection Trip Command Trigger [x] Position Indication: Trigger [x] OPEN, CLOSE, Indeterminated, Trigger [x] Disturbed SCADA Trip Command 50P[x] Trip Command 51P[x] Autoreclosure CLOSE Trip Command XX[x]...
Page 346 6 Control / Switchgear-Manager 6.2 Switchgear Configuration In addition to that, the user can set the minimum hold time of the trip command within this module and define whether the trip command is latched or not (see also ↪“Latching”). SG[x] . Trip CB Switchgear_Y11 name =Module name of the assigned trip command SG[x] .
Page 347 6 Control / Switchgear-Manager 6.2 Switchgear Configuration Ex CLOSE / OPEN If it is required that the switchgear be opened or closed by an external signal, the user can assign one signal that triggers the CLOSE and one signal that triggers the OPEN command (e. g.
Page 348: Switchgear Wear
6 Control / Switchgear-Manager 6.3 Switchgear Wear • “timeout”: Non interlocked switching for a certain time • The set time for non-interlocked switching is set at the parameter »Timeout NonIL« and applies also for the “single Operation” mode. Non-interlocked switching can also be activated by assigning a signal to »Timeout NonIL«. Manual Manipulation of the Switchgear Position In case of faulty position indication contacts (Aux contacts) or broken wires, the position indication resulted from the assigned signals can be manipulated (overwritten) manually, to...
Page 349 6 Control / Switchgear-Manager 6.3 Switchgear Wear At [Control / SG[x] / SG Wear] »Isum Intr Alarm«, the user can set a threshold for the maximum allowed sum of interrupt currents. If this threshold is exceeded a related alarm signal is set at [Operation / Status Display / Control / SG[x]] »Isum Intr trip«, plus the respective phase-selective signals »Isum Intr trip: Ixx«.
Page 350 6 Control / Switchgear-Manager 6.3 Switchgear Wear 10000 10000 20.0 20.0 Interrupted Current in kA per operation Fig. 101: Breaker Maintenance Curve for a typical 25kV Circuit Breaker MRM4 MRM4-3.10-EN-MAN...
Page 351: Control - Example: Switching Of A Circuit Breaker
6 Control / Switchgear-Manager 6.4 Control - Example: Switching of a Circuit Breaker Control - Example: Switching of a Circuit Breaker The following example shows how to switch a circuit breaker via the HMI at the device. By pressing the »CTRL« key you enter a screen Local showing the single line, and you have direct 0.000 A...
Page 352 6 Control / Switchgear-Manager 6.4 Control - Example: Switching of a Circuit Breaker The Softkey “SG” takes you to a screen that lists all connected switchgear devices. (For HighPROTEC devices of type »MC…«, up to 6 switchgear devices are supported. A device of type »MR…«...
Page 353: System Alarms
7 System Alarms System Alarms After activation (via [Device planning / Projected Elements] »SysA . Mode« = “use”) the user can configure within the System Alarms menu [SysA]: • General Settings (activate/inactivate the Demand Management, optional assign a • signal, that will block the Demand Management); •...
Page 354 7 System Alarms 7.1 Demand Management Example for a fixed window: If the range is set for 15 minutes, the protective device calculates the average current or power over the past 15 minutes and updates the value every 15 minutes. Example for a sliding window: If the sliding window is selected and the interval is set to 15 minutes, the protective device calculates and updates the average current or power continuously, for the past 15 minutes (the newest measuring value replaces the oldest...
Page 355: Min. And Max. Values
7 System Alarms 7.2 Min. and Max. Values Step 2: • In addition, the Demand specific settings have to be configured in the [SysA] menu. • • Determine if the demand should generate an alarm or if it should run in the silent •...
Page 356: Recorders
8 Recorders Recorders The MRM4 features several Recorders that collect log messages of particular types (in some non-volatile memory): • The • Self-Supervision Messages (↪10.2 Self-Supervision Messages) collects device- internal messages of various types. These can be, for example, security-related events (e. g.
Page 357 8 Recorders Moreover, a double-click on this summary within the Trend Recorder window in Smart view enables the user to save all data in an *.HptTr file that can be opened in the DataVisualizer PC software for graphical analysis. MRM4-3.10-EN-MAN MRM4...
Page 358: Disturbance Recorder
8 Recorders 8.1 Disturbance Recorder Disturbance Recorder • Disturbance records can be downloaded (read out) by means of the parameter • setting and evaluation software Smart view. • The disturbance records can be viewed and analyzed within the DataVisualizer. (This •...
Page 359 8 Recorders 8.1 Disturbance Recorder (via parameters »Pre-trigger time« and »Post-trigger time«) in percent of the »Max file size« value. To trigger the disturbance recorder, up to 8 signals can be selected. The trigger signals work edge controlled with the rising edge of each signal. If a disturbance record has been written and trigger signals do not fall back, a rising edge of one of the other signals will trigger a new disturbance record as long as the recorder is ready to record again (this is the case if the previous recording event has finished writing to internal storage).
Page 360 8 Recorders 8.1 Disturbance Recorder Start 1 = Prot.Alarm Start 2 = -.- Start 3 = -.- Start 4 = -.- Start 5 = -.- Start 6 = -.- Start 7 = -.- Start 8 = -.- Auto overwriting = Active Post-trigger time = 25% t-rec = Max file size Pre-trigger time = 15%...
Page 361 8 Recorders 8.1 Disturbance Recorder Start 1 = Prot.Trip Start 2 = -.- Start 3 = -.- Start 4 = -.- Start 5 = -.- Start 6 = -.- Start 7 = -.- Start 8 = -.- t-rec < Max file size Auto overwriting = Active Post-trigger time = 25% Start 1...
Page 362: Fault Recorder
8 Recorders 8.2 Fault Recorder Fault Recorder Purpose of the Fault Recorder The Fault Recorder provides compressed information about faults (e.g. Trip Causes). The compressed information can be read also at the HMI. This might be helpful for fast fault analysis.
Page 363: Behavior Of The Fault Recorder
8 Recorders 8.2.1 Behavior of the Fault Recorder Popup pops up on the display. Prot . Alarm Signal: General Alarm Fault duration Prot . Trip Signal: General Trip Time to trip Analog values (recording) t-meas-delay=0 t-meas-delay>0 Capture Data Capture Data Fig.
Page 364 8 Recorders 8.2.1 Behavior of the Fault Recorder If it is required that a fault record be written even if a general alarm has not lead to a trip, the parameter [Device Para / Recorders / Fault rec / ] »Fault rec . Record-Mode« has to be set to “Alarms and Trips”.
Page 365: Fault Display Screen (Overlay / Pop-Up) On The Display
8 Recorders 8.2.2 Fault Display screen (Overlay / Pop-up) on the Display 8.2.2 Fault Display screen (Overlay / Pop-up) on the Display Fault rec 1 Trip 50P[1] Fault type Smart view 50P[1].I> 2 In Fault rec RecordNo Fault No. Gridfault No. Date of Record Pickup Trip...
Page 366: Content Of A Fault Record
8 Recorders 8.2.3 Content of a Fault Record 8.2.3 Content of a Fault Record A fault record comprises information about: Part 1: Common Information (independent of protection function) Date and Time Date and Time of the Fault Fault No. This counter will be incremented with each fault (»Prot . Alarm«) No.
Page 367 8 Recorders 8.2.4 Check the Fault Recorder at the Panel of the MRM4 Navigation within the Fault recorder Softkey Next (upper) item within this fault record. ▲ Previous fault record. ▶▶▎ Next (lower) item within this fault record. ▼ How to Read Out the Fault Recorder at the Panel In order to read out a fault record there are two options available: •...
Page 368: Event Recorder
8 Recorders 8.3 Event Recorder Event Recorder The event recorder can register up to 300 events and the last (minimum) 50 saved events are recorded fail-safe. The following information is provided for any of the events: Events are logged as follows: Record No.
Page 369: Trend Recorder
8 Recorders 8.4 Trend Recorder Trend Recorder Read the Trend Recorder The Trend Recorder saves measured data in their time development. • Enter the menu branch [Operation / Recorders / Trend rec]. • • On the panel you can see a summary (timestamp, number of entries). •...
Page 370: Motor Start Recorder
8 Recorders 8.5 Motor Start Recorder Motor Start Recorder Manage Motor Start Records The Motor Start Recorder logs information during a motor start-up. These records are stored in a fail-safe manner and the capacity allows for recording up to 5 start-ups. After 5 start-ups, every following start-up overwrites the recording of the oldest one (“First in First out”...
Page 371 8 Recorders 8.5 Motor Start Recorder • If the data has not been downloaded from the device yet, select the menu item • “Receive Start Recorder” in the “Device” menu. • Within the navigation tree, go to the [Operation / Recorders] menu. Here the user •...
Page 372 8 Recorders 8.5 Motor Start Recorder View motor start data graphically in the DataVisualizer software. In the DataVisualizer software the user can view the RMS value of the phase currents, thermal capacity used, and temperatures measured by the URTD module if a URTD is installed and attached to the relay.
Page 373: Statistic Recorder
8 Recorders 8.6 Statistic Recorder Statistic Recorder The Statistic Recorder shows motor specific statistical data on a monthly base. The Statistic Recorder can record up to 24 monthly reports. The reports are power fail safe stored. In order to view information from the Statistic Recorder, the user has to select [Operation / Recorders / Statistic rec] from the menu tree.
Page 374: History Function
8 Recorders 8.7 History Function History Function The History function, accessible under the menu branch [Operation / History], can be utilized as a counter or log of specific occurrences monitored by the MRM4. There are the following groups, each dedicated to a particular type of occurrence that can be recorded: •...
Page 375: Programmable Logic
9 Programmable Logic Programmable Logic General Description The MRM4 includes programmable Logic Equations for programming output relays, blocking of protective functions and custom logic functions in the relay. The logic provides control of the output relays based on the state of the inputs that can be chosen from the assignment list (protective function pickups, protective function states, breaker states, system alarms and module inputs –...
Page 376 9 Programmable Logic LogicMain_Y02 LE = LE[1]...[n] LE . Input1 no assignment 1..n, Assignment List LE . Inverting1 Active Inactive LE . LE . Gate Out Gate Input2 no assignment 1..n, Assignment List LE . Timer Out NAND LE . Inverting2 Active Delay Timer...
Page 377 9 Programmable Logic Input Signals The user can assign up to 4 Input signals (from the assignment list) to the inputs of the gate. As an option, each of the 4 input signals can be inverted (negated) Timer Gate (On Delay and Off Delay) The output of the gate can be delayed.
Page 378 9 Programmable Logic LogicMain_E04 Update within the same Update within the next evaluation cycle evaluation cycle (1 cycle delay) LE1 . Input1 LE1 . Input1 LE1 . Input2 LE1 . Input2 Output 1 Output 1 LE1 . Input3 LE1 . Input3 LE1 .
Page 379 9 Programmable Logic LogicMain_E05 Update within the same Update within the next evaluation cycle evaluation cycle (1 cycle delay) LE1 . Input1 LE1 . Input1 LE1 . Input2 LE1 . Input2 Output 1 Output 1 LE1 . Input3 LE1 . Input3 LE1 .
Page 380 9 Programmable Logic • If required, configure the timers (»LEx.t-On Delay« and »LEx.t-Off Delay«). • • If the latched output signal is used assign a reset signal to the reset input. • • In case that Logic Equations should be cascaded the user has to be aware of •...
Page 381: Self-Supervision
10 Self-Supervision Self-Supervision The protection devices apply various check routines during normal operation and during the start-up phase to supervise themselves for faulty operation. Self-Supervision within the devices Supervision of... Supervised by... Action on detected issue... Start phase The duration (permitted time) The device will be rebooted.
Page 382 10 Self-Supervision Self-Supervision within the devices Supervision of... Supervised by... Action on detected issue... parameter setting for detailed information. Quality of the measuring Special diagnostic algorithms Various diagnostic data circuits check all measurements for is listed below [Service / plausibility. Diagnostic Data].
Page 383 10 Self-Supervision Self-Supervision within the devices Supervision of... Supervised by... Action on detected issue... connection to the master [Operation / Status Display / communication system. Scada]. In order to monitor this state you can assign this status onto an LED and/or an output relay. For details on the status of the GOOSE communication please refer to chapter...
Page 384: Device Start (Reboot)
10 Self-Supervision 10.1 Device Start (Reboot) 10.1 Device Start (Reboot) The device reboots in any of the following situations: • It is connected to the supply voltage, • • the user initiates (intentionally) a restart of the device, • • the device is set back to factory defaults, •...
Page 385 10 Self-Supervision 10.1 Device Start (Reboot) Device Start-up Codes Reboot due to unknown error source. Forced Reboot (initiated by the main processor) The main processor identified invalid conditions or data. Exceeded Time Limit of the Protection Cycle Unexpected interruption of the Protection Cycle. Forced Reboot (initiated by the digital signal processor) The digital signal processor identified invalid conditions or data.
Page 386: Self-Supervision Messages
10 Self-Supervision 10.2 Self-Supervision Messages 10.2 Self-Supervision Messages The menu [Operation / Self-Supervision / Messages] gives access to the list of Self- Supervision messages. In particular, it is recommended to check these in case of some problem directly related to the functionality of the MRM4. The Self-Supervision collects various security-related messages (e. g.
Page 387: Syslog
10 Self-Supervision 10.3 Syslog Checking the Self-Supervision messages using Smart view is more convenient (see example figure below) than using the HMI: All messages are listed in one dialog window. There are buttons in the toolbar of this dialog that allow for restricting the list to particular severity types: It is possible to e. g.
Page 388 10 Self-Supervision 10.3 Syslog • [Device Para / Security / Syslog] »IP address, part 1« … »IP address, part 4« — These • four parameters specify the IP address of the server computer, i. e. each setting is an integer number from 0 to 255. MRM4 MRM4-3.10-EN-MAN...
Page 389: Device Taken Out Of Service ("Device Stopped")
Service Staff. NOTICE! In such a case please contact the SEG Service Staff and provide them the error code. For further information on trouble shooting please refer to the separately provided Troubleshooting Guide.
Page 390: Commissioning
11 Commissioning Commissioning Before starting work on an opened switchboard it is imperative that the complete switchboard is dead and the following 5 safety regulations are always met: , DANGER! Safety precautions: • Disconnect from the power supply • • Secure against reconnection •...
Page 391: Commissioning/Protection Test
11 Commissioning 11.1 Commissioning/Protection Test NOTICE! The permissible deviations of measuring values and device adjustment are dependent on the technical data/tolerances. 11.1 Commissioning/Protection Test WARNING! Putting into operation/Protection test must be carried out by authorized and qualified personnel. Before the device is put into operation the related documentation has to be read and understood.
Page 392: Putting Out Of Operation - Plug Out The Relay
11 Commissioning 11.2 Putting out of Operation – Plug out the Relay NOTICE! Any description of functions, parameters, inputs or outputs that does not match the device in hand, can be ignored. CAUTION! In most countries, there are specific national regulations and standards about functional and protection tests that must be carried out on a regular basis.
Page 393: Service And Commissioning Support
11 Commissioning 11.3 Service and Commissioning Support 11.3 Service and Commissioning Support Within the service menu various functions support maintenance and commissioning of the device. 11.3.1 General Within the menu [Service / General], the user can initiate a reboot of the device. The »System OK«...
Page 394 11 Commissioning 11.3.2 Maintenance Mode The Maintenance Mode can be activated: • manually (only at the HMI/panel); • • via communication; or • • via digital input. • NOTICE! Changing to another mode is only possible if there is no active Activation Signal (e. g.: if the device is in the “Activation via DI Mode"...
Page 395: Phase Sequence
11 Commissioning 11.3.3 Phase Sequence Appframe_Y01 Maint Mode Sys . MaintMode Manually Sys . Maint Mode SCADA Sys . MaintMode Man. Sys . Maint Mode DI Inactive Active Sys . Maint Mode Mode & Inactive Activation Manually Activation via SCADA Activation via DI ≥1 &...
Page 396: Forcing The Relay Output Contacts
11 Commissioning 11.3.5 Forcing the Relay Output Contacts NOTICE! Zone Interlocking Output and the Supervision Contact cannot be disarmed. Within this mode [Service / Test - Prot inhib. / DISARMED] entire groups of relay output contacts can be disarmed: • Permanent; or •...
Page 397: Forcing A Trip Cmd
11 Commissioning 11.3.6 Forcing a Trip Cmd Principle – General Use DANGER! The User MUST ENSURE that the relay output contacts operate normally after the maintenance is completed. If the relay output contacts do not operate normally, the protective device WILL NOT provide protection. For commissioning purposes or for maintenance, relay output contacts can be set by force.
Page 398: Forcing The Self-Supervision Contact To Drop
11 Commissioning 11.3.7 Forcing the Self-Supervision Contact to drop NOTICE! Forcing a Trip Cmd will open a connected breaker. Please ensure this is acceptable before use. 11.3.7 Forcing the Self-Supervision Contact to drop For commissioning or testing purposes, the user can force the Self-Supervision Contact (SC) to drop for a period of 5 seconds via [Service / Test - Prot inhib.
Page 399: Forcing Analog Outputs
11 Commissioning 11.3.9 Forcing Analog Outputs* long as this mode is active. Now the User can force RTD values. As soon as the force mode is deactivated, measured values will be shown again. 11.3.9 Forcing Analog Outputs* * = Availability depends on ordered device. NOTICE! The parameters, their defaults, and setting ranges have to be taken from Analog Output section.
Page 400: Fault Simulator (Sequencer)
11 Commissioning 11.3.10 Fault Simulator (Sequencer)* 11.3.10 Fault Simulator (Sequencer)* * = Availability depends on ordered device. For commissioning support and in order to analyze failures, the protective device offers the option to simulate measuring quantities. [After setting Device planning] »Mode« = “use”, the simulation menu can be found within the menu branch [Service / Test - Prot inhib.
Page 401 11 Commissioning 11.3.10 Fault Simulator (Sequencer)* Within the menu branch [Service / Test - Prot inhib. / Sgen / Configuration / Times], the duration of each sequence can be set. In addition, the measuring quantities to be simulated can be determined (e. g.: voltages, currents, and the corresponding angles) for each phase (and ground).
Page 402 11 Commissioning 11.3.10 Fault Simulator (Sequencer)* The trip command (»TripCmd«) of all protection functions is blocked. The protection function will possibly trip but not generate a trip command. • Set [Service / Test - Prot inhib. / Sgen / Process] »TripCmd Mode« = “No TripCmd” •...
Page 403: Servicing And Maintenance
Communication Every 1‒4 years, for devices with established SCADA communication: • Check whether the SCADA connection to the substation is still active and functional. • Battery In general the battery lasts more than 10 years. Exchange by SEG. MRM4-3.10-EN-MAN MRM4...
Page 404 12 Servicing and Maintenance 12.1 Routine Functional Tests Notice: The battery serves as buffering of the clock (real-time clock). There's no impact on the functionality of the device if the battery breaks down, except for the buffering of the clock while the unit is in de-energized condition. •...
Page 405: Technical Data, Specifications, Tolerances
13 Technical Data, Specifications, Tolerances 13.1 Technical Data Technical Data, Specifications, Tolerances 13.1 Technical Data NOTICE! Use copper conductors only, 75°C. Conductor size AWG 14 [2.5 mm²]. 13.1.1 Climatic and Environmental Data Storage Temperature: −30°C to +70°C (−22°F to 158°F) Operating Temperature: −20°C to +60°C (−4°F to 140°F) Permissible Humidity at Ann.
Page 406: Housing
13 Technical Data, Specifications, Tolerances 13.1.5 Housing All wire-bound communication interfaces: 1.5 kVDC 13.1.5 Housing Housing B1: Height / Width: 183 mm (7.205 in.) / 141.5 mm (5.571 in.) (8 Pushbottons / Door Mounting) Housing B1: Height / Width: 173 mm (4 HE) / 141.5 mm (28 TE) (8 Pushbottons / 19“) Housing Depth (Incl.
Page 407 13 Technical Data, Specifications, Tolerances 13.1.6 Current Measurement Connection Cross Sections: 1 x or 2 x 2.5 mm² (2 x AWG 14) with wire end ferrule 1 x or 2 x 4.0 mm² (2 x AWG 12) with ring cable sleeve or cable sleeve 1 x or 2 x 6 mm²...
Page 408: Frequency Measurement
13 Technical Data, Specifications, Tolerances 13.1.7 Frequency Measurement Sensitive Ground Current Inputs: At 0.1 A: S = 7 mVA At 5 A: S = 870 mVA At 0.5 A: S = 10 mVA 13.1.7 Frequency Measurement Nominal frequencies: 50 Hz / 60 Hz 13.1.8 Voltage Supply Aux.
Page 409: 13.1.10 Display
13 Technical Data, Specifications, Tolerances 13.1.10 Display Power Supply Range Power consumption in Idle Max. Power Consumption Mode (for Frequencies of 50-60 Hz): 13.1.10 Display Display type: LCD with LED background illumination Resolution - graphics display: 128 x 64 pixel 13.1.11 LEDs LED type: Two colored: red / green...
Page 410: 13.1.15 Digital Inputs
13 Technical Data, Specifications, Tolerances 13.1.15 Digital Inputs Voltage mode Influence of temperature to accuracy <1% Test voltage of outputs (one group) against 2.5 kV other electrical groups Test voltage of outputs (one group) against 1.0 kV earth 13.1.15 Digital Inputs The Digital Inputs are galvanically isolated (via opto-couplers) from the housing and from the internal electronics.
Page 411: 13.1.16 Binary Output Relays
13 Technical Data, Specifications, Tolerances 13.1.16 Binary Output Relays Switching Threshold 1 OFF: Un = 48 V / 60VDC Switching Threshold 2 ON: Min. 42.6 VDC Switching Threshold 2 OFF: Max. 21.3 VDC Un = 110 / 120 VAC / DC Switching Threshold 3 ON: Min.
Page 412: Supervision Contact (Sc)
13 Technical Data, Specifications, Tolerances 13.1.17 Supervision Contact (SC) Contact type: 1 changeover contact or normally open or normally closed Terminals: Screw-type terminals (*) The operating and reset times are the pure hardware-related switching times (coil – making/breaking contact), i. e. without the time that it takes the software to calculate the decisions.
Page 413: 13.1.20 Urtd-Interface
13 Technical Data, Specifications, Tolerances 13.1.20 URTD-Interface * CAUTION! In case that the RS485 interface has terminals, the communication cable has to be shielded. 13.1.20 URTD-Interface * (Slot X102, availability depends on the ordered device type.) Connector: Versatile Link Compatible Fiber: 1 mm Wavelength: 660 nm...
Page 414: 13.1.21 Fiber Optic Module With St Connector For Scada Communication
13 Technical Data, Specifications, Tolerances 13.1.21 Fiber Optic Module with ST connector for SCADA Communication * 13.1.21 Fiber Optic Module with ST connector for SCADA Communication * (Slot X103, availability depends on the ordered device type.) Please note: The transmission speed of the optical interfaces is limited to 3 MBaud for Profibus.
Page 415: 13.1.23 Smart View Connections
13 Technical Data, Specifications, Tolerances 13.1.23 Smart view Connections 13.1.23 Smart view Connections The MRM4 can communicate with the operating software Smart view as follows: • USB connection (using the USB interface at the front of the MRM4). • • TCP/IP connection (using the Ethernet* interface at the rear side of the MRM4). •...
Page 416: Setting Ranges
13 Technical Data, Specifications, Tolerances 13.2 Setting Ranges 13.2 Setting Ranges All settings are listed, each with its range and default value, in the Reference manual (separate document). For example: Measuring principle, threshold range for Phase Overcurrent protection: • See Reference manual, “Protection Parameter” → “Phase Overcurrent Stage” → •...
Page 417: Specifications / Tolerances
13 Technical Data, Specifications, Tolerances 13.3 Specifications / Tolerances 13.3 Specifications / Tolerances 13.3.1 Specifications of the Real Time Clock Resolution: 1 ms Tolerance: <1 minute / month (+20°C [68°F]) <±1ms if synchronized via IRIG-B Time Synchronization Tolerances The different protocols for time synchronisation vary in their accuracy: Used Protocol Time drift over one Deviation to time generator...
Page 418: Specifications Of The Measured Value Acquisition
13 Technical Data, Specifications, Tolerances 13.3.2 Specifications of the Measured Value Acquisition 13.3.2 Specifications of the Measured Value Acquisition Phase and Ground Current Measuring Frequency Range: 50 Hz / 60 Hz ± 10% Accuracy: Class 0.5 Amplitude Error if I < In: ±0.5% of the rated current Amplitude Error if I >...
Page 419: Protection Elements Accuracy
13 Technical Data, Specifications, Tolerances 13.3.3 Protection Elements Accuracy 13.3.3 Protection Elements Accuracy NOTICE! The tripping delay relates to the time between alarm and trip. The accuracy of the operating time relates to the time between fault entry and the time when the protection element is picked-up.
Page 420 13 Technical Data, Specifications, Tolerances 13.3.3.1 Phase Overcurrent Protection Overcurrent Protection Elements I[x] Accuracy Inverse-Time / Characteristic curve Start time (pickup time) <36 ms At testing current ≥ 2 times threshold value Tripping delay t(I, I>, tChar) ±5% (according to the selected curve, see ↪5.8.1 Characteristics) For testing current in the range 2 …...
Page 421: 13.3.3.2 Earth (Ground) Overcurrent Protection
13 Technical Data, Specifications, Tolerances 13.3.3.2 Earth (Ground) Overcurrent Protection 13.3.3.2 Earth (Ground) Overcurrent Protection Earth Overcurrent Protection Accuracy Elements IG[x] Threshold value »IG>« ±1.5% of the setting value or ±1% In. Dropout Ratio 97% or 0.5% In Earth Overcurrent Protection Accuracy Elements IG[x] Definite time...
Page 422: 13.3.3.3 Thermal Protection
13 Technical Data, Specifications, Tolerances 13.3.3.3 Thermal Protection 13.3.3.3 Thermal Protection RTD Protection: Accuracy RTD / URTD Trip Threshold ±1°C (1.8°F) Alarm Threshold ±1°C (1.8°F) t-delay Alarm DEFT ±1% or ±10 ms Reset Hysteresis −2°C (−3.6°F) of threshold ±1°C (1.8°F) MRM4 MRM4-3.10-EN-MAN...
Page 423: Motor Protection
13 Technical Data, Specifications, Tolerances 13.3.3.4 Motor Protection 13.3.3.4 Motor Protection Motor Protection: Accuracy Stop Declaration <50 ms Time period current must drop below STPC ±1.5% of the setting value or 1% In Anti Backspin ±1 s Blocking time to allow for back spin TBS Timer ±1 s Time between repeated starts.
Page 424 13 Technical Data, Specifications, Tolerances 13.3.3.4 Motor Protection Under Load Protection: Accuracy I<[x] Threshold ±1.5% of the setting value or 1% In Dropout Ratio 103% or 0.5% In DEFT ±1% or ±10 ms Operating Time <50 ms Starting from I lower than 0.9 x setting value Disengaging Time <50 ms...
Page 425 13 Technical Data, Specifications, Tolerances 13.3.3.4 Motor Protection Thermal Model Accuracy Trip Threshold ±2% Trip Delay ±1% or ±10 ms Alarm Threshold ±2% Alarm Delay ±1% or ±10 ms MRM4-3.10-EN-MAN MRM4...
Page 426: 13.3.3.5 Current-Related Protection
13 Technical Data, Specifications, Tolerances 13.3.3.5 Current-Related Protection 13.3.3.5 Current-Related Protection Current unbalance: Accuracy I2>[x] I2> ±2% of the setting value or 1% In Dropout Ratio 97% or 0.5% In %(I2/I1) ±1% DEFT ±1% or ±10 ms Operating Time <70 ms Disengaging Time <50 ms ±5% INV...
Page 427: 13.3.3.6 Miscellaneous Protection And Supervision
13 Technical Data, Specifications, Tolerances 13.3.3.6 Miscellaneous Protection and Supervision 13.3.3.6 Miscellaneous Protection and Supervision Circuit Breaker Failure Protection: Accuracy t-CBF ±1% or ±10 ms I-CBF > ±1.5% of the setting value or 1% In Operating Time <40 ms Starting from I higher than 1.3 x I-CBF > Disengaging Time <40 ms Trip Circuit Monitoring:...
Page 428: Appendix
14 Appendix 14.1 Standards Appendix 14.1 Standards 14.1.1 Approvals UL File Nr.: E217753 certified regarding UL508 (Industrial Controls) CSA File Nr.: 251990 certified regarding CSA-C22.2 No. 14 (Industrial Controls) certified by EAC (Eurasian Conformity) KEMA Laboratories — Type tested and certified in accordance with the complete type test requirements of IEC 60255‑1:2009.
Page 429: Design Standards
14 Appendix 14.1.2 Design Standards 14.1.2 Design Standards Generic standard EN 61000-6-2 [2019] EN 61000-6-3 [2022] Product standard IEC 60255-1 [2009] IEC 60255-26 [2013] IEC 60255-27 [2013] UL 508 (Industrial Control Equipment) [2005] CSA C22.2 No. 14-95 (Industrial Control Equipment) [1995] ANSI C37.90 [2005] MRM4-3.10-EN-MAN...
Page 430: Electrical Tests
14 Appendix 14.1.3 Electrical Tests 14.1.3 Electrical Tests High Voltage Tests High Frequency Interference Test IEC 60255-22-1 Within one circuit 1 kV / 2 s IEC 60255-26 IEEE C37.90.1 IEC 61000-4-18 Circuit to ground 2.5 kV / 2 s class 3 Circuit to circuit 2.5 kV / 2 s Insulation Voltage Test...
Page 431 14 Appendix 14.1.3 Electrical Tests Surge Immunity Test (Surge) IEC 60255-22-5 Within one circuit 2 kV Circuit to ground 4 kV IEC 60255-26 IEC 61000-4-5 class 4 class 3 Communication cables to ground 2 kV Electrical Discharge Immunity Test (ESD) IEC 60255-22-2 Air discharge 8 kV...
Page 432 14 Appendix 14.1.3 Electrical Tests Radio Interference Radiation Test IEC/CISPR 11 30MHz – 1GHz Limit value class A IEC 60255-26 MRM4 MRM4-3.10-EN-MAN...
Page 433: Environmental Tests
14 Appendix 14.1.4 Environmental Tests 14.1.4 Environmental Tests Classification IEC 60068-1 Climatic Classification 20/060/56 IEC 60721-3-1 Classification of ambient conditions 1K5/1B1/1C1L/1S1/1M2 but (Storage) min. −30°C (−22°F) IEC 60721-3-2 Classification of ambient conditions 2K2/2B1/2C1/2S1/2M2 but (Transportation) min. −30°C (−22°F) IEC 60721-3-3 Classification of ambient conditions 3K6/3B1/3C1/3S1/3M2 but (Stationary use at weather protected...
Page 434 14 Appendix 14.1.4 Environmental Tests Test BD: Dry Heat Transport and storage test IEC 60255-27 Temperature 70°C test duration 16 h IEC 60068-2-2 Test AB: Cold Transport and storage test IEC 60255-27 Temperature −30°C test duration 16 h IEC 60068-2-1 MRM4 MRM4-3.10-EN-MAN...
Page 435: Mechanical Tests
14 Appendix 14.1.5 Mechanical Tests 14.1.5 Mechanical Tests Test Fc: Vibration Response Test IEC 60068-2-6 (10 Hz – 59 Hz) 0.035 mm (0.0014 in.) IEC 60255-27 Displacement IEC 60255-21-1 (59Hz – 150Hz) 0.5 gn class 1 Acceleration Number of cycles in each axis Test Fc: Vibration Endurance Test IEC 60068-2-6 (10 Hz –...
Page 436 14 Appendix 14.1.5 Mechanical Tests Test Fe: Earthquake Test 1 sweep per axis MRM4 MRM4-3.10-EN-MAN...
Page 437: Iec 60870-103 Interoperability
14 Appendix 14.2 IEC 60870‑103 Interoperability 14.2 IEC 60870‑103 Interoperability The selected parameters have been marked as follows: ☐ Function or ASDU is not used ☒ Function or ASDU is used as standardized (default) The possible selection (blank “☐” / X “☒”) is specified for each specific clause or parameter. 14.2.1 Physical layer Electrical interface...
Page 438: 14.2.3.2 Selection Of Standard Information Numbers In Monitor Direction
14 Appendix 14.2.3.2 Selection of standard information numbers in monitor direction 14.2.3.2 Selection of standard information numbers in monitor direction System functions in monitor direction: ☒ INF = 0 — End of general interrogation ☒ INF = 0 — Time synchronization ☒...
Page 439: 14.2.3.3 Selection Of Standard Information Numbers In Control Direction
14 Appendix 14.2.3.3 Selection of standard information numbers in control direction 14.2.3.3 Selection of standard information numbers in control direction System functions in control direction: ☒ INF = 0 — Initiation of general ☒ INF = 0 — Time synchronization interrogation Generic commands in control direction: ☒...
Page 440: 14.2.3.4 Miscellaneous
14 Appendix 14.2.3.4 Miscellaneous 14.2.3.4 Miscellaneous Measurand max. value = rated value × Current L ☐ ☒ Current L ☐ ☒ Current L ☐ ☒ Voltage L ☐ ☒ 1–E Voltage L ☐ ☒ 2–E Voltage L ☐ ☒ 3–E Voltage L –L ☐...
Page 441: Iec 60870-5-104 Interoperability
14 Appendix 14.3 IEC 60870‑5‑104 Interoperability 14.3 IEC 60870‑5‑104 Interoperability This companion standard presents sets of parameters and alternatives from which subsets must be selected to implement particular telecontrol systems. Certain parameter values, such as the choice of “structured” or “unstructured” fields of the INFORMATION OBJECT ADDRESS of ASDUs represent mutually exclusive alternatives.
Page 442: Physical Layer
14 Appendix 14.3.3 Physical layer 14.3.3 Physical layer (network-specific parameter, all interfaces and data rates that are used are to be marked “X”) Transmission speed (control direction) ■ 100 bit/s ■ 2400 bit/s ■ 2400 bit/s ■ 200 bit/s ■ 4800 bit/s ■...
Page 443: Application Layer
14 Appendix 14.3.5 Application layer When using an unbalanced link layer, the following ASDU types are returned in class 2 messages (low priority) with the indicated causes of transmission: ■ The standard assignment of ASDUs to class 2 messages is used as follows: Type identification Cause of transmission 9, 11, 13, 21...
Page 444 14 Appendix 14.3.5 Application layer Selection of standard ASDUs Process information in monitor direction (station-specific parameter, mark each Type ID “X” if it is only used in the standard direction, “R” if only used in the reverse direction, and “B” if used in both directions). <1>...
Page 445 14 Appendix 14.3.5 Application layer <37> := Integrated totals with time tag CP56Time2a M_IT_TB_1 ☐ <38> := Event of protection equipment with time tag CP56Time2a M_EP_TD_1 ☐ <39> := Packed start events of protection equipment with time tag M_EP_TE_1 CP56Time2a ☐...
Page 446 14 Appendix 14.3.5 Application layer <100> := Interrogation command C_IC_NA_1 ☐ <101> := Counter interrogation command C_CI_NA_1 ☐ <102> := Read command C_RD_NA_1 <103> := Clock synchronization command (option) C_CS_NA_1 ■ <104> := Test command C_TS_NA_1 <105> := Reset process command C_RP_NA_1 ■...
Page 447 14 Appendix 14.3.5 Application layer Mark Type Identification/Cause of transmission combinations: • “X” if only used in the standard direction; • • “R” if only used in the reverse direction; • • “B” if used in both directions. • Type Cause of Transmission Identification 10 11 12 13 20...
Page 448 14 Appendix 14.3.5 Application layer Type Cause of Transmission Identification 10 11 12 13 20 44 45 46 47 … … <34> M_ME_TD_1 ▤ ▤ [X] ▤ ☐ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ▤...
Page 449: Basic Application Functions
14 Appendix 14.3.6 Basic application functions Type Cause of Transmission Identification 10 11 12 13 20 44 45 46 47 … … <107>C_TS_TA_1 ▤ ▤ ▤ ▤ ▤ ☐ ☐ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ▤ ☐ ☐ ☐...
Page 450 14 Appendix 14.3.6 Basic application functions Spontaneous transmission Double transmission of information objects with cause of transmission spontaneous (station-specific parameter, mark each information type “X” where both a Type ID without time and corresponding Type ID with time are issued in response to a single spontaneous change of a monitored object) The following type identifications may be transmitted in succession caused by a single status change of an information object.
Page 451 14 Appendix 14.3.6 Basic application functions ☐ Direct set point command transmission Select and execute command ☐ Select and execute set point command C_SE_ACTTERM used ☐ No additional definition Short-pulse duration (duration determined by a system parameter in the outstation) ☐...
Page 452 14 Appendix 14.3.6 Basic application functions ☐ High limit for transmission of measured values Parameter activation (object-specific parameter, mark “X” if function is only used in the standard direction, “R” if only used in the reverse direction, and “B” if used in both directions). ☐...
Page 453 14 Appendix 14.3.6 Basic application functions Parameter Default Remarks Selected value value 10 s Time-out for acknowledges in case of no data 10 s (fixed) messages t < t 20 s Time-out for sending test frames in case of a long 20 s (fixed) idle state Maximum number of outstanding I format APDUs k and latest acknowledge...
Page 454: Abbreviations, And Acronyms
14 Appendix 14.4 Abbreviations, and Acronyms 14.4 Abbreviations, and Acronyms The following abbreviations and acronyms are used in this manual. °C Degrees Celsius °F Degrees Fahrenheit Ampere(s), Amp(s) Alternating current Ack. Acknowledge Logical gate (The output becomes true if all Input signals are true.) ANSI American National Standards Institute avg.
Page 455 14 Appendix 14.4 Abbreviations, and Acronyms Current Transformer Supervision Current transformer supervision D-Sub-Plug Communication interface Direct current DEFT Definite time characteristic (Tripping time does not depend on the height of the current.) delta phi Vector surge df/dt Rate-of-frequency-change Digital Input Diagn Cr Diagnosis counter(s) Diagn.
Page 456 14 Appendix 14.4 Abbreviations, and Acronyms Hour Human machine interface (Front of the protective relay) Manufacturer internal product designation Hertz Phase Overcurrent Stage Fault current Current I-BF Tripping threshold Zero current (symmetrical components) Positive sequence current (symmetrical components) Negative sequence current (symmetrical components) I2>...
Page 457 14 Appendix 14.4 Abbreviations, and Acronyms incl. Include, including InEn Inadvertent Energization Info. Information Interl. Interlocking Intertripping Intertripping Inverse characteristic (The tripping time will be calculated depending on the height of the current) Calculated (residual) ground current IRIG Input for time synchronization (Clock) IRIG-B IRIG-B-Module Thermal Characteristic...
Page 458 14 Appendix 14.4 Abbreviations, and Acronyms max. Maximum meas Measured min. Minimum min. Minute MINV Moderately Inverse Tripping Characteristic Manufacturer Internal Product Designation Code Millimeter Memory mapping unit Milli-second(s) Medium voltage Milli volt amperes (Power) N.C. Not connected N.O. Normal open (Contact) NINV Normal inverse tripping characteristic Newton-meter...
Page 459 14 Appendix 14.4 Abbreviations, and Acronyms PSet Parameter set Parameter set switch (Switching from one parameter set to another) Reverse Reactive Power Q->&V< Undervoltage and Reactive Power Direction Protection Reset rec. Record Relative Reset ResetFct Reset function RevData Review data Root mean square Reset Temperature Protection Module...
Page 460 14 Appendix 14.4 Abbreviations, and Acronyms Trip circuit supervision Thermal replica module Manufacturer internal product designation code TripCmd Trip command Text Underwriters Laboratories DEFT (definite time tripping characteristic) Universal serial bus Voltage-stage Volts V/f> Overexcitation V012 Symmetrical Components: Supervision of the Positive Phase Sequence or Negative Phase Sequence Vac / V ac Volts alternating current...
Page 461: List Of Ansi Codes
14 Appendix 14.5 List of ANSI Codes 14.5 List of ANSI Codes (This list is essentially based on IEEE Std C37.2‑2008.) IEEE C37.2 / MRM4 Functions ANSI Underspeed Distance Protection Phase Distance Protection Overexcitation Protection (Volts per Hertz) Synchronizing or Synchronizm-check via 4th measuring channel of voltage measurement card Temperature Protection Undervoltage Protection...
Page 462 14 Appendix 14.5 List of ANSI Codes IEEE C37.2 / MRM4 Functions ANSI 50BF Breaker Failure Instantaneous / Definite Time Overcurrent Jam (locked Rotor) Instantaneous / Definite Time Overcurrent for the phase currents 50N/G Instantaneous / Definite Time Overcurrent for the ground element 50Ns Instantaneous / Definite Time Overcurrent for the ground...
Page 463 14 Appendix 14.5 List of ANSI Codes IEEE C37.2 / MRM4 Functions ANSI Directional Overcurrent Protection Directional Overcurrent Protection for the ground element 67Ns Directional Overcurrent Protection for the ground element, sensitive measuring input Power Swing Blocking 74TC Trip Circuit Supervision Out of Step Tripping Vector Surge Protection Auto Reclosure...
Page 464: Revision History
SEG Support. Up to date documentation? Please check the web site of SEG for the latest revision of this Technical Manual and if there is an Errata Sheet with updated information. MRM4...
Page 465: Version: 3.10
14 Appendix 14.6.1 Version: 3.10 14.6.1 Version: 3.10 Software Digital Inputs - debounce improvement For debounce times > 0, the improved debounce mechanism can lead to shorter response times. Definition as a Protection or Supervision Function (»Superv. only«) It is possible for most protection stages to define during the commissioning setup whether this stage is used for protection purposes, so that the circuit breaker gets opened in case of a fault, or whether the stage shall be used for supervision purposes only, without circuit breaker operation.
Page 466 14 Appendix 14.6.1 Version: 3.10 ↪11.3.7 Forcing the Self-Supervision Contact to drop. Trend Recorder with "1 min" resolution setting The lowest resolution setting of the trend recorder is "1 min" now ("5 min" before). ↪8.4 Trend Recorder. Triggering of the Disturbance Recorder Before R3.10: All trigger signals must fall back before the next disturbance record can be triggered.
Page 467 14 Appendix 14.6.1 Version: 3.10 • AnaP - Analog Input: • Protection: The issue occurred if Analog Input Protection was used and the trip of this module was assigned to the Breaker module. The trip command of the breaker module was not triggered properly in case of a detected fault from the Analog Input Protection.
Page 468: Version: 3.7
14 Appendix 14.6.2 Version: 3.7 14.6.2 Version: 3.7 • Date: 2020-May-19 (until firmware build number 47460) • • Date: 2020-July-21 (as of firmware build number 48830) • Scope of Delivery Due to environmental and efficiency considerations, the product DVD is no longer part of the standard delivery of HighPROTEC devices.
Page 469 14 Appendix 14.6.2 Version: 3.7 Profibus, IEC 60870-5-103 The communication protocols Profibus and IEC 60870-5-103 can now be adapted to the application by (re-)mapping the data-points. This helps to smoothly integrate the MRM4 in an existing substation network. The Windows tool SCADApter has been enhanced correspondingly, so that mapping the data-points to protocol-internal addresses can be carried out for these protocols (in addition to the SCADA protocols Modbus and IEC 60870-5-104, that have already been configurable as of Version 3.6).
Page 470: Version: 3.6
14 Appendix 14.6.3 Version: 3.6 14.6.3 Version: 3.6 • Date: 2019-January-31 • Software The protection functions of the MRM4 have been adapted to comply with the requirements of the VDE‑AR‑N‑4110:2018. Phase Fault Direction Detection Bug fix: An error in the direction decision algorithm has been fixed that could lead to false direction decisions for “ACB”...
Page 471 14 Appendix 14.6.3 Version: 3.6 Passwords Passwords are now stored in a way such that they “survive” a firmware update. (See ↪2.4.2 Passwords.) Time Penalties for False Passwords If a wrong password is being entered several times, then the MRM4 blocks any further password entry for an increasing amount of time, until a correct password has been entered.
Page 472 14 Appendix 14.6.3 Version: 3.6 Communication Protocol IEC 61850 The parameters for the Virtual Inputs and Outputs have been renamed. The number of available Virtual Inputs and Outputs has been increased (from 32) to 64. ↪4.3 IEC 61850. Manual Acknowledgment of LEDs It is now possible to acknowledge (reset) latched LEDs by pressing the »C«...
Page 473: Version: 3.4
14 Appendix 14.6.4 Version: 3.4 14.6.4 Version: 3.4 • Date: 2017-October-01 • • Revision: C • Hardware • A metal protecting cap has been added to the LC connectors for the Ethernet / TCP/IP • via fiber optics. Since the cap improves the EMC immunity it is recommended to always fasten it carefully after plugging in the LC connectors.
Page 474 14 Appendix 14.6.4 Version: 3.4 Reset« that allows to remove options from the Reset dialog. (See ↪2.4.6 Reset to Factory Defaults, Reset All Passwords.) Overcurrent – I[n], IG[n] All ANSI and IEC inverse time characteristics have a time limit now according to IEC 60255‑151.
Page 475: Version: 3.1
14 Appendix 14.6.5 Version: 3.1 14.6.5 Version: 3.1 NOTICE! This version has not been published! • Date: 2017-March-06 • Hardware No changes. Software Reconnection – ReCon[n] The Reconnection module has been enhanced according to VDE‑AR‑N 4120. • The release condition has been made selectable via ReCon . Reconnect. Release •...
Page 476: Version: 3.0.B
14 Appendix 14.6.6 Version: 3.0.b 14.6.6 Version: 3.0.b • Date: 2016-February-20 • • Revision: B • Hardware No changes. Software The self-monitoring has been improved. Overcurrent – I[n] Bugfix: • An initialization issue has been fixed in the Overcurrent module. In case of •...
Page 477 14 Appendix 14.6.7 Version: 3.0 14.6.7 Version: 3.0 • Date: 2015-October-01 • • Revision: B • Hardware • A new front plate in dark gray color replaces the blue housing that had been used for • all 2.x versions. • The new front plate features a USB interface for the connection with the Smart view •...
Page 478 14 Appendix 14.6.7 Version: 3.0 Switch Onto Fault - Module – SOTF The SOTF function has been removed. SCADA The DNP3 has been made available (with RTU/TCP/UDP). New fiber-optic interfaces for SCADA. Setting procedure (menu structure, default settings) has been modified. New “SCADA connection status”...
Page 479 14 Appendix 14.6.7 Version: 3.0 SNTP Start the network after protection is active. Bugfix: • SNTP might not have worked correctly in case of an empty battery. • • Default daylight-saving changed to “Sunday”. • PC interface / Smart view connection As of Smart view R4.30, it is possible to exchange the single-line for devices that support this.
Page 480 14 Appendix 14.6.7 Version: 3.0 • All communication settings have to be re-defined. An automatic conversion is only • partly possible. • The VirtualOutput assignment of IEC 61850 communication has been restructured. • All assignment settings need to be re-defined. •...
Page 481: Index
Index Index ANSI 26 ............... . 295█...
Page 482 Index Bypass the Setting Lock ............ 51█...
Page 483 Index Ethernet .............. 35, 124, 136█...
Page 484 Index IEC NINV (earth/ground overcurrent 270█ characteristic) ..............IEC NINV (phase overcurrent 243█...
Page 485 Index CTRL .............. 351█...
Page 486 Index Order Form (Order Code) ............ 35█...
Page 487 Index (Motor) History ............. . 356, 374█...
Page 488 Index Softkeys .............. 42█...
Page 489 Index Values ............... . 43█...
Page 490 Index ⚙ ( 4G ) .............. 200█...
Page 491 MRM4 MANUAL docs.SEGelectronics.de/mrm4-2 SEG Electronics GmbH reserves the right to update any portion of this publication at any time. Information provided by SEG Electronics GmbH is believed to be correct and reliable. However, SEG Electronics GmbH assumes no responsibility unless otherwise expressly undertaken.

Seg HighPROTEC MRM4 Manual

1 Safety Messages and Proper Use of the MRM4

2 MRM4 - Motor Protection

3 Hardware

4 Communication Protocols

5 Protective Elements

6 Control / Switchgear-Manager

7 System Alarms

8 Recorders

9 Programmable Logic

10 Self-Supervision

11 Commissioning

12 Servicing and Maintenance

13 Technical Data, Specifications, Tolerances

14 Appendix

15 Index

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