Siemens 7SR12 Argus Manual
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Siemens 7SR12 Argus Manual

Overcurrent relay energy management
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Table of Contents

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7SR11 & 7SR12 Argus
Overcurrent Relay
Energy Management
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Summary of Contents for Siemens 7SR12 Argus

  • Page 1 Reyrolle Protection Devices 7SR11 & 7SR12 Argus Overcurrent Relay Energy Management...
  • Page 3 Siemens Protection Devices Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 4 7SR11 & 7SR12 Argus Contents ©2015 Siemens Protection Devices Limited Page 2 of 2...

  • Page 5: Description Of Operation

    Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 6 2015/06 E6 hardware variants with IEC 61850 functionality introduced. No changes to non-IEC61850 E4 hardware. 2014/01 Circuit changes to improve startup 2012/04 Support for AC PSU 2009/05 First Release Chapter 1 Page 2 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 7: Table Of Contents

    Auto Reclose sequences ......................62 4.1.3 Autoreclose Prot’n Menu ......................63 4.1.4 Autoreclose Config Menu ......................63 4.1.5 P/F Shots sub-menu ....................... 65 4.1.6 E/F Shots sub-menu ....................... 65 ©2017 Siemens Protection Devices Limited Chapter 1 Page 3 of 88...
  • Page 8 6.9 Real Time Clock ............................ 86 6.9.1 Time Synchronisation – Data Communication Interface ............86 6.9.2 Time Synchronisation – Binary Input ..................86 6.10 Settings Groups ............................. 86 6.11 Password Feature ..........................87 Chapter 1 Page 4 of 88 ©2017 Siemens Protection Devices Limited...
  • Page 9 Figure 3-24 Logic Diagram: 50SEF Line Check Elements (50SEF LC) ..............52 Figure 3-25 Logic Diagram: 50 Line Check Elements (50LC) ................52 Figure 3-26 Logic Diagram: Arc Flash Detector (50 AFD) ..................53 ©2017 Siemens Protection Devices Limited Chapter 1 Page 5 of 88...
  • Page 10 The following notational and formatting conventions are used within the remainder of this document: • Setting Menu Location MAIN MENU>SUB-MENU • Setting: Elem name -Setting • Setting value: value • Alternatives: [1st] [2nd] [3rd] Chapter 1 Page 6 of 88 ©2017 Siemens Protection Devices Limited...
  • Page 11 And Gate & (2 inputs shown) EVENT: IEC, Modbus or DNP EVENT Where applicable ≥1 Or Gate (3 inputs shown) INST. Relay instrument Exclusive Or (XOR) Gate (3 inputs shown) ©2017 Siemens Protection Devices Limited Chapter 1 Page 7 of 88...

  • Page 12: Section 1: Introduction

    Fibre Optic Communication Where fibre optic communication ports are fitted, the lasers are Class 1 devices but recommend they should not be viewed directly. Chapter 1 Page 8 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 13: Table 1-1 7Sr11 Ordering Options

    Time delayed sensitive earth fault 60CT CT Supervision High Impedance REF 74T/CC Trip and Close circuit supervision 81HBL2 harmonic block/inrush restraint Cold load pickup Hand reset contacts Programmable logic (continued on next page) ©2017 Siemens Protection Devices Limited Chapter 1 Page 9 of 88...
  • Page 14 AC 115 V supported by devices with hardware version CC or later E4 case is standard, E6 case is required if IEC61850 model ordered 4 Binary Input variant provides segregated Binary Outputs without a common terminal Chapter 1 Page 10 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 15: Figure 1-1 Functional Diagram Of 7Sr1101-1_A12-_Ca0 Relay

    (x2) (x2) (x2) (x2) (50) (x2) (x2) (x2) (x2) (x2) NOTE: The use of some functions are mutually exclusive (x3) (x3) Figure 1-3 Functional Diagram of 7SR1103-1_A_ _-_DA0 Relay ©2017 Siemens Protection Devices Limited Chapter 1 Page 11 of 88...

  • Page 16: Figure 1-4 Functional Diagram Of 7Sr1103-3_A

    (x2) (x2) (x2) (x2) (50) (x2) (x2) (x2) (x2) (x2) NOTE: The use of some functions are mutually exclusive (x3) (x3) Figure 1-4 Functional Diagram of 7SR1103-3_A_ _-_DA0 Relay Chapter 1 Page 12 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 17: Figure 1-5 Connections Diagram For 7Sr11 Relay

    Items shown in BOLD are ordering options BO 4 BO 5 Shows contacts internal to relay case assembly. Contacts close when the relay chassis is withdrawn from case Figure 1-5 Connections Diagram for 7SR11 Relay ©2017 Siemens Protection Devices Limited Chapter 1 Page 13 of 88...

  • Page 18: Table 1-2 7Sr12 Ordering Options

    E4 case is standard, E6 case is required if IEC61850 model ordered 4 Binary Input variant provides segregated Binary Outputs without a common terminal Functions only available in 4CT SEF relay Chapter 1 Page 14 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 19: Figure 1-6 Functional Diagram Of 7Sr1204-2_A12-_Ca0 Relay

    (x4) (x4) (x4) (x4) (x4) (x4) (x4) (x2) (x4) (x3) (x3) NOTE: The use of some functions are mutually exclusive (x4) Figure 1-8 Functional Diagram of 7SR1205-2_A_ _-_DA0 Relay ©2017 Siemens Protection Devices Limited Chapter 1 Page 15 of 88...

  • Page 20: Figure 1-9 Functional Diagram Of 7Sr1205-4_A

    67/50 67/51 (x2) (x4) (x4) (x4) (x4) (x2) (x4) (x3) (x3) NOTE: The use of some functions (x4) are mutually exclusive Figure 1-9 Functional Diagram of 7SR1205-4_A_ _-_DA0 Relay Chapter 1 Page 16 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 21: Figure 1-10 Connections Diagram For 7Sr12 Relay

    Items shown in BOLD are ordering options BO 4 Shows contacts internal to relay case BO 5 assembly. Contacts close when the relay chassis is withdrawn from case Figure 1-10 Connections Diagram for 7SR12 Relay ©2017 Siemens Protection Devices Limited Chapter 1 Page 17 of 88...

  • Page 22: Section 2: Hardware Description

    3 x Voltage + 3 x Binary Input (BI) + 3 x Binary Output (BO) 3 x Voltage + 1 x Binary Input (BI) + 3 x Binary Output (BO) without common terminals Chapter 1 Page 18 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 23: Case

    PCB’s. Figure 2-1 E4 relay shown withdrawn The rear terminal blocks comprise M4 female terminals for wire connections. Each terminal can accept two 4mm crimps. ©2017 Siemens Protection Devices Limited Chapter 1 Page 19 of 88...

  • Page 24: Front Cover

    The only ‘action’ that is permitted is to reset the Fault Data display, latched binary outputs and LEDs by using the Chapter 1 Page 20 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 25: Power Supply Unit (Psu)

    – this prevents any PSU overload conditions occurring. The PSU is reset by switching the auxiliary supply off and on. The PSU does not contain any fuses or user serviceable protection components. For fuse rating see Chapter 5 Installation Guide. ©2017 Siemens Protection Devices Limited Chapter 1 Page 21 of 88...

  • Page 26: Operator Interface/ Fascia

    2) Blank label for user defined information. Figure 2-7 Close up of Relay Label A ‘template’ is available in Reydisp Software to allow users to create and print customised labels. Chapter 1 Page 22 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 27: Figure 2-8 Close Up Of Relay Identifier

    The ‘Relay Identifier’ is used in communication with Reydisp to identify the relay. Pressing the Cancel button several times will always return the user to this screen. Figure 2-8 Close up of Relay Identifier ©2017 Siemens Protection Devices Limited Chapter 1 Page 23 of 88...
  • Page 28 The status of hand reset LEDs is maintained by a back up storage capacitor in the event of an interruption to the d.c. supply voltage. Chapter 1 Page 24 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 29: Current Inputs

    (e.g. cross site wiring). The default pick-up time of 20ms provides ac immunity. Each input can be programmed independently. ©2017 Siemens Protection Devices Limited Chapter 1 Page 25 of 88...

  • Page 30: Binary Outputs (Output Relays)

    OUTPUT CONFIG>BINARY OUTPUT CONFIG>Pickup Outputs setting. Notes on Pulsed Outputs When operated, the output will reset after a user configurable time of up to 60 seconds regardless of the initiating condition. Chapter 1 Page 26 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 31: Virtual Input/Outputs

    INPUT CONFIG > INPUT MATRIX menu. Virtual input/outputs can also be used as data items in equations. The status of the virtual inputs and outputs is volatile i.e. not stored during power loss. ©2017 Siemens Protection Devices Limited Chapter 1 Page 27 of 88...

  • Page 32: Self Monitoring

    Protection Healthy, all pushbuttons and any data communications. Once the Relay has failed in this manner, it is non-recoverable at site and must be returned to the manufacturer for repair. Chapter 1 Page 28 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 33: Figure 2-14 Start-Up Events

    A meter, Miscellaneous Meters>Unexpected Restarts, is provided to show how many Unexpected Restarts have occurred during the previous Unexpected Restart Period. This is resettable from the front fascia. Figure 2-14 Start-up Events ©2017 Siemens Protection Devices Limited Chapter 1 Page 29 of 88...

  • Page 34: Protection Healthy/Defective

    If the relay is withdrawn from the case, the case shorting contact will make across the normally closed contacts to provide and external alarm. Chapter 1 Page 30 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 35: Section 3: Protection Functions

    This prevents mal-operation under fuse failure/MCB tripped conditions where noise voltages can be present. ©2017 Siemens Protection Devices Limited Chapter 1 Page 31 of 88...

  • Page 36: Figure 3-1 Logic Diagram: Directional Overcurrent Element (67)

    (79 P/F Prot’n Trip n = Delayed). 50-n Inrush Action: Block Operation of the inrush current detector function. 50-n VTS Action: Inhibit Operation of the VT Supervision function (7SR1205 & 7SR1206). Chapter 1 Page 32 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 37: Time Delayed Overcurrent Protection (51)

    The reset mode is significant where the characteristic has reset before issuing a trip output – see ‘Applications Guide’. A minimum operate time for the characteristic can be set using 51-n Min. Operate Time setting. ©2017 Siemens Protection Devices Limited Chapter 1 Page 33 of 88...

  • Page 38: Figure 3-3 Logic Diagram: Time Delayed Overcurrent Element

    IL2 Fwd & ≥1 & IL2 Rev L2 Dir En & ≥1 IL3 Fwd & ≥1 & IL3 Rev L3 Dir En Figure 3-3 Logic Diagram: Time Delayed Overcurrent Element Chapter 1 Page 34 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 39: Current Protection: Voltage Controlled Overcurrent (51V) - 7Sr12

    51V Setting 51-n Multiplier < x IL1 51-n Setting < Delayed x IL2 51-n Setting Overcurrent (51-n) < x IL3 51-n Setting Figure 3-4 Logic Diagram: Voltage Controlled Overcurrent Protection ©2017 Siemens Protection Devices Limited Chapter 1 Page 35 of 88...

  • Page 40: Current Protection: Derived Earth Fault (67N, 51N, 50N)

    This prevents mal-operation under fuse failure/MCB tripped conditions where noise voltages can be present. 67N Polarizing Quantity 67N Charact. Angle 67N Min. Voltage Sequence Filters 67N Fwd. 67N Rev. Sequence Filters Figure 3-5 Logic Diagram: Derived Directional Earth Fault Element Chapter 1 Page 36 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 41: Time Delayed Derived Earth Fault Protection (51N)

    51N-n Time Mult setting. Alternatively, a definite time lag delay (DTL) can be chosen using 51N-n Char. When definite time lag (DTL) is selected the time multiplier is not applied and the 51N-n Delay (DTL) setting is used instead. ©2017 Siemens Protection Devices Limited Chapter 1 Page 37 of 88...

  • Page 42: Figure 3-7 Logic Diagram: Derived Time Delayed Earth Fault Protection

    Inhibit Forward & & Reverse VT Fail ≥1 51N-n Dir En ≥1 & & 67N Fwd. & 67N Rev. Figure 3-7 Logic Diagram: Derived Time Delayed Earth Fault Protection Chapter 1 Page 38 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 43: Current Protection: Measured Earth Fault (67G, 51G, 50G)

    This prevents mal-operation under fuse failure/MCB tripped conditions where noise voltages can be present. 67G Charact. Angle 67G Min. Voltage Sequence Filters 67G Fwd 67G Rev Figure 3-8 Logic Diagram: Measured Directional Earth Fault Protection ©2017 Siemens Protection Devices Limited Chapter 1 Page 39 of 88...

  • Page 44: Figure 3-9 Logic Diagram: Measured Instantaneous Earth-Fault Element

    Non Dir Non-Dir Inhibit Forward & & Reverse VT Fail ≥1 50G-n Dir En & ≥1 & 67G Fwd & 67G Rev Figure 3-9 Logic Diagram: Measured Instantaneous Earth-fault Element Chapter 1 Page 40 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 45: Time Delayed Measured Earth Fault Protection (51G)

    Forward & & Reverse VT Fail ≥1 51G-n Dir En & ≥1 & 67G Fwd & 67G Rev Figure 3-10 Logic Diagram: Measured Time Delayed Earth Fault Element (51G) ©2017 Siemens Protection Devices Limited Chapter 1 Page 41 of 88...

  • Page 46: Current Protection: Sensitive Earth Fault (67Sef, 51Sef, 50Sef)

    This prevents mal-operation under fuse failure/MCB tripped conditions where noise voltages can be present. 67SEF 67SEF Charact. Angle 67SEF Min. Voltage 67SEF Compensated Network Sequence Filters 67SEF Fwd 67SEF Rev Chapter 1 Page 42 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 47: Instantaneous Sensitive Earth Fault Protection (50Sef)

    & Inhibit 50SEF-n 50SEF-n Delay 79 P/F Inst Trips = 50SEF-n & 79 P/F Prot’n Trip n > 50SEF-n = Delayed Figure 3-12 Logic Diagram: 7SR11 SEF Instantaneous Element ©2017 Siemens Protection Devices Limited Chapter 1 Page 43 of 88...

  • Page 48: Figure 3-13 Logic Diagram: 7Sr12 Sef Instantaneous Element

    General Pickup = Delayed 50SEF-n Dir En 50SEF-n Setting Wattmetric Block 50SEF-n Delay > Ires Select 50SEF-n Ires cos(θ-θ Ires Real Figure 3-13 Logic Diagram: 7SR12 SEF Instantaneous Element Chapter 1 Page 44 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 49: Time Delayed Sensitive Earth Fault Protection (51Sef)

    79 P/F Inst Trips = 51SEF-n & General Pickup Pickup 79 P/F Prot’n Trip n = Delayed 51SEF-n trip Figure 3-14 Logic Diagram: 7SR11 SEF Time Delayed Element (51SEF) ©2017 Siemens Protection Devices Limited Chapter 1 Page 45 of 88...

  • Page 50: Figure 3-15 Logic Diagram: 7Sr12 Sef Time Delayed Element (51Sef)

    51SEF-n Dir En 51SEF-n Follower DTL 51SEF-n Reset Wattmetric Block General Pickup Pickup Ires Select trip 51SEF-n Ires cos(θ-θ Ires Real Figure 3-15 Logic Diagram: 7SR12 SEF Time Delayed Element (51SEF) Chapter 1 Page 46 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 51: Current Protection: High Impedance Restricted Earth Fault - (64H)

    Cold load trips use the same binary output(s) as the associated 51-n element. Operation of the cold load element can be inhibited from: Inhibit Cold Load A binary or virtual input. ©2017 Siemens Protection Devices Limited Chapter 1 Page 47 of 88...

  • Page 52: Current Protection: Negative Phase Sequence Overcurrent - (46Nps)

    The 46DT element has a DTL characteristic. 46DT Setting sets the pick-up current and 46DT Delay the follower time delay. Operation of the negative phase sequence overcurrent elements can be inhibited from: Inhibit 46IT A binary or virtual input. Inhibit 46DT A binary or virtual input. Chapter 1 Page 48 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 53: Current Protection: Under-Current (37)

    Enabled & Disabled Inhibit 37-n 37 U/I Guarded & 37 U/I Guard Setting < & < < 37-n Setting < 37-n Start Option 37-n Delay < Any/All 37-n < ©2017 Siemens Protection Devices Limited Chapter 1 Page 49 of 88...

  • Page 54: Current Protection: Thermal Overload (49)

    I = measured thermal current Iθ = 49 Overload setting (or k.IB) The final steady state thermal condition can be predicted for any steady state value of input current where t >τ, Chapter 1 Page 50 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 55: Current Protection: Line Check 50Lc, 50G Lc And 50Sef Lc - Only Software Option 'C

    The feature will remain enabled until the CB has been closed for a duration equal to the Close CB Pulse + Reclaim Timer settings in the CIRCUIT BREAKER MENU. Alternatively, the element will remain enabled as long as the Line Check binary input is energised. ©2017 Siemens Protection Devices Limited Chapter 1 Page 51 of 88...

  • Page 56: Figure 3-23 Logic Diagram: 50G Line Check Elements (50G Lc)

    50 LC-n Delay Action L1 81HBL2 > Inhibit & ≥1 L2 81HBL2 > 50 LC-n & L3 81HBL2 > 50/51 Measurement Figure 3-25 Logic Diagram: 50 Line Check Elements (50LC) Chapter 1 Page 52 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 57: Current Protection: Arc Flash Detector (50 Afd)

    AFD Zone 6 Flash & AFD Zone 6 AFD Zone 6 Flash 50AFD Setting 50AFD 50AFD PhA 50AFD PhB 50AFD PhC Figure 3-26 Logic Diagram: Arc Flash Detector (50 AFD) ©2017 Siemens Protection Devices Limited Chapter 1 Page 53 of 88...

  • Page 58: Voltage Protection: Phase Under/Over Voltage (27/59) - 7Sr12

    > < 27/59-n O/P Phases 27/59-n Delay Voltage Any (≥1) Input 27/59-n > < Mode All (&) PH-PH > < PH-N Figure 3-27 Logic Diagram: Under/Over Voltage Elements (27/59) Chapter 1 Page 54 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 59: Voltage Protection: Negative Phase Sequence Overvoltage (47) - 7Sr12

    The 59NDT element has a DTL characteristic. 59NDT Setting sets the pick-up voltage (3V0) and 59NDT Delay the follower time delay. Operation of the neutral overvoltage elements can be inhibited from: Inhibit 59NIT A binary or virtual input. Inhibit59NDT A binary or virtual input. ©2017 Siemens Protection Devices Limited Chapter 1 Page 55 of 88...

  • Page 60: Figure 3-29 Logic Diagram: Neutral Overvoltage Element (59N)

    General Pickup Pickup trip 59NIT Filter General Pickup 59NDT Setting 59NDT Element 59NDT Delay Disabled > Enabled 59NDT & Inhibit 59NDT Figure 3-29 Logic Diagram: Neutral Overvoltage Element (59N) Chapter 1 Page 56 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 61: Voltage Protection: Under/Over Frequency (81) - 7Sr12

    81 U/V Guard 81-n Operation Setting 81-n Setting < & 81-n Hysteresis < General Pickup < 81-n Delay Voltage > < 81-n Selection Figure 3-30 Logic Diagram: Under/Over Frequency Detector (81) ©2017 Siemens Protection Devices Limited Chapter 1 Page 57 of 88...

  • Page 62: Power Protection: Power (32) - 7Sr12

    Gn32: Setting Gn 32-n U/C Guard Setting & < & & < < Gn 32-n Delay -VAr -VAr 32-n +VAr +VAr General Pickup Figure 3-31 Logic Diagram: Power Protection (32) Chapter 1 Page 58 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 63: Power Protection: Sensitive Power (32S) - 7Sr12

    Gn 32S-n U/C & Guard Setting & < 32S CT Angle Comp Gn 32S-n Delay -VAr -VAr 32S-n +VAr +VAr General Pickup Figure 3-32 Logic Diagram: Sensitive Power Protection (32S) ©2017 Siemens Protection Devices Limited Chapter 1 Page 59 of 88...

  • Page 64: Power Protection: Power Factor (55) - 7Sr12

    Gn 55-n U/C Guard Setting & < & & < < Gn 55-n Delay -VAr -VAr 55-n +VAr +VAr General Pickup Figure 3-33 Logic Diagram: Power Factor Protection (55) Chapter 1 Page 60 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 65: Section 4: Control & Logic Functions

    Successful Close output issued. A single, common Reclaim time is used (Reclaim Timer). When an auto-reclose sequence does not result in a successful reclosure the relay goes to the lockout state. ©2017 Siemens Protection Devices Limited Chapter 1 Page 61 of 88...

  • Page 66: Auto Reclose Sequences

    Controller selects the next Protection characteristic/Dead time according to the type of the last Trip in the sequence e.g. PF, EF, SEF or EXTERNAL. Reclose Dead Time User programmable dead times are available for each protection trip operation. Chapter 1 Page 62 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 67: Autoreclose Prot'n Menu

    79 Sequence Fail Timer Sets the time that AutoReclose start can be primed. Where this time expires before all the DAR start signals are not received i.e. the CB has opened, protection pickups have reset and the trip relay has reset, the Relay goes to Lockout. ©2017 Siemens Protection Devices Limited Chapter 1 Page 63 of 88...
  • Page 68 By the CB Closed binary input, provided there is no signal present which will cause Lockout. The Lockout condition has a delayed drop-off of 2s. The Lockout condition can not be reset if there is an active lockout input. Chapter 1 Page 64 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 69: P/F Shots Sub-Menu

    4.1.7 SEF S HOTS SUB MENU This menu allows the Sensitive Earth trip/reclose sequence to be parameterized:- As above but SEF Settings, Note: - SEF does not have HighSets ©2017 Siemens Protection Devices Limited Chapter 1 Page 65 of 88...

  • Page 70: Extern Shots Sub-Menu

    External AutoReclose sequence can be applied for this purpose. By setting-up internal Quick Logic equation(s) the user can define and set what should occur when any one of these other elements operates. Chapter 1 Page 66 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 71: Figure 4-2 Basic Auto-Reclose Sequence Diagram

    Elem Line Check Trip CB Open at End of Reclaim Time, or Protection operation during final Reclaim Time Reclaim Timer Reclaim Time Elapsed 79 Successful AR Figure 4-2 Basic Auto-Reclose Sequence Diagram ©2017 Siemens Protection Devices Limited Chapter 1 Page 67 of 88...

  • Page 72: Manual Cb Control

    Reset operation can be useful, however, as it allows a close or trip sequence to be aborted by dropping off the binary input signal. Chapter 1 Page 68 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 73: Circuit Breaker

    The CB Open and CB Closed binary inputs are continually monitored to track the CB Status. A Don’t Believe it (DBI) condition exists for a 1/1 state– i.e. where the CB indicates it is both Open and Closed at the same time ©2017 Siemens Protection Devices Limited Chapter 1 Page 69 of 88...

  • Page 74: Figure 4-3 Logic Diagram: Circuit Breaker Status

    This allows for the internal delays caused by the relay – especially the delay before a binary input operates – to be subtracted from the measured CB trip time. This gives a more accurate measurement of the time it took for the CB to actually trip. Chapter 1 Page 70 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 75: Quick Logic

    En Counter Reset Mode = Multi Shot: The En Counter Reset Time is started each time the counter is incremented. Where En Counter Reset Time elapses without further count increments the count value is reset to zero. ©2017 Siemens Protection Devices Limited Chapter 1 Page 71 of 88...

  • Page 76: Figure 4-4 Sequence Diagram: Quick Logic Pu/Do Timers (Counter Reset Mode Off)

    Protection functions can be used in Quick Logic by mapping them to a Virtual Input / Output. Refer to Chapter 7 – Applications Guide for examples of Logic schemes. Chapter 1 Page 72 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 77: Section 5: Supervision Functions

    50BF Mech Trip ≥1 50BF-2 Delay 50BF-2 & & CB Closed 50BF Setting ≥1 & > ≥1 50BF-I4 Setting > Figure 5-1 Logic Diagram: Circuit Breaker Fail Protection (50BF) ©2017 Siemens Protection Devices Limited Chapter 1 Page 73 of 88...

  • Page 78: Vt Supervision (60Vts) - 7Sr1205 & 7Sr1206

    Voltage is restored to a healthy state i.e. above VPPS setting while NPS voltage is below VNPS setting. Ext Reset 60VTS A binary or virtual input, or function key and a VT failure condition no longer exists. Inhibit 60VTS A binary or virtual input. Chapter 1 Page 74 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 79: Figure 5-2 Logic Diagram: Vt Supervision Function (60Vts)

    Ipps Load > 60VTS Operated Ipps & < Vpps Setting < & >1 External Trigger 60VTS Ext_Trig External Reset 60VTS Ext_Reset Figure 5-2 Logic Diagram: VT Supervision Function (60VTS) ©2017 Siemens Protection Devices Limited Chapter 1 Page 75 of 88...

  • Page 80: Ct Supervision (60Cts)

    60CTS Delay then a CT failure output (60CTS Operated) is given. Operation of the CT supervision elements can be inhibited from: Inhibit 60CTS A binary or virtual input. Chapter 1 Page 76 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 81: Broken Conductor (46Bc)

    46BC Element Enabled 46BC Setting Disabled Inhibit 46BC & 46BC U/C 46BC U/C Guard Guarded Setting 46BC Delay 46BC Filter Filter Figure 5-5 Logic Diagram: Broken Conductor Function (46BC) ©2017 Siemens Protection Devices Limited Chapter 1 Page 77 of 88...

  • Page 82: Trip/ Close Circuit Supervision (74Tcs & 74Ccs)

    Disabled & CCS-n 74CCS-n ≥1 NOTE: Diagram shows two binary inputs mapped 74CCS-n to the same Close Circuit Supervision element Figure 5-7 Logic Diagram: Close Circuit Supervision Feature (74CCS) Chapter 1 Page 78 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 83: 2Nd Harmonic Block/Inrush Restraint (81Hbl2) Phase Elements Only

    > 1 81HBL2 Disabled 81HBL2 Setting & Inhibit 81HBL2 81HBL2 Bias > L1 81HBL2 > L2 81HBL2 > L3 81HBL2 Figure 5-8 Functional Diagram for Harmonic Block Feature (81HBL2) ©2017 Siemens Protection Devices Limited Chapter 1 Page 79 of 88...

  • Page 84: Section 6: Other Features

    Binary Inputs or LED’s already assigned to that function. Any protection function which is enabled in the setting menu will appear in the Output Matrix Test. Chapter 1 Page 80 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 85: Cb Counters

    The Gn Demand Window setting defines the maximum period of time over which the demand values are valid. A new set of demand values is established after expiry of the set time. The Gn Demand Window Type can be set to FIXED or PEAK or ROLLING. ©2017 Siemens Protection Devices Limited Chapter 1 Page 81 of 88...

  • Page 86: Event Records

    Up to ten fault records can be stored and displayed on the Fascia LCD. Fault records can be triggered by user selected relay operations or via a suitably programmed binary input. An output is provided to indicate when a new record has been stored. Chapter 1 Page 82 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 87: Energy Storage - 7Sr12

    POWER FACTOR LAGGING ACTIVE (W) IMPORT ACTIVE (W) EXPORT REACTIVE (VAr) EXPORT REACTIVE (VAr) EXPORT -90° REACTIVE ENERGY EXPORT (vars forward) IEC CONVENTION : +ve vars Figure 6-1 Energy Direction Convention ©2017 Siemens Protection Devices Limited Chapter 1 Page 83 of 88...

  • Page 88: Disk Activity Warning

    The energy storage meters can be reset from a binary input and have a user selectable setting for their measurement in the Data Storage/Energy storage menu. For a detailed description refer to Technical Manual Chapter 2 – Settings and Instruments. Chapter 1 Page 84 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 89: Operating Mode

    Note also that switching a protection function IN / OUT via the Control Menu will not change that function’s ENABLED / DISABLED setting. The Control Menu selection will over-ride the setting, however. Control Mode commands are password protected using the Control Password function – see Section 6.10. ©2017 Siemens Protection Devices Limited Chapter 1 Page 85 of 88...

  • Page 90: Real Time Clock

    (Select Grp Mode: Level triggered) or latches into the selected group after energisation of the input (Select Grp Mode: Edge triggered). Settings are stored in non-volatile memory. Chapter 1 Page 86 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 91: Password Feature

    The password validation screen also displays a numerical code. If the password is lost or forgotten, this code should be communicated to Siemens Protection Devices Ltd. and the password can be retrieved. ©2017 Siemens Protection Devices Limited Chapter 1 Page 87 of 88...
  • Page 92 7SR11 & 7SR12 Description Of Operation Chapter 1 Page 88 of 88 ©2017 Siemens Protection Devices Limited...

  • Page 93: The Copyright And Other Intellectual Property Rights In This Document, And In Any Model Or Article Produced From It (And Including

    Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 94 7SR11 & 7SR12 Settings & Instruments Guide Chapter 2 Page 2 of 20 ©2017 Siemens Protection Devices Limited...
  • Page 95 Figure 2.1-2 RS485 connection to PC ........................16 Figure 2-3 EN100 Ethernet Module ........................17 Figure 2.1-4 PC Comm Port Selection ........................19 Figure 2.1-5 PC Language File Editor ........................20 ©2017 Siemens Protection Devices Limited Chapter 2 Page 3 of 20...

  • Page 96: Section 1: Introduction

    To change the contrast on the LCD insert a flat bladed screwdriver into the screwhead below the contrast symbol, turning the screwhead left (anti-clockwase) lightens the contrast of the LCD and turning it right (clockwise) darkens the display. Figure 1.1-2 Fascia Contrast symbol Chapter 2 Page 4 of 20 ©2017 Siemens Protection Devices Limited...
  • Page 97 7SR11 & 7SR12 Settings & Instruments Guide Figure 1.1-3 Fascia of a 7SR11 relay (E4 Case) Figure 1.1-4 Fascia of a 7SR11 relay (E6 Case with IEC61850) ©2017 Siemens Protection Devices Limited Chapter 2 Page 5 of 20...

  • Page 98: Operation Guide

    LEDs will momentarily light up to indicate their correct operation. It also moves the cursor right ► when navigating through menus and settings. Chapter 2 Page 6 of 20 ©2017 Siemens Protection Devices Limited...
  • Page 99 PICK UP CONFIG TRIP CONFIG MAINTENANCE OUTPUT MATRIX TEST CB COUNTERS DEMAND DATA STORAGE I 2T CB WEAR WAVEFORM STORAGE START COUNT FAULT STORAGE COMMUNICATIONS ENERGY STORAGE Figure 1.2-2 Menu Structure ©2017 Siemens Protection Devices Limited Chapter 2 Page 7 of 20...

  • Page 100: Setting Mode

    A settings document hard copy can be produced by exporting the required settings file as RTF format. A document is produced which presents the settings as a table in a user friendly format. Chapter 2 Page 8 of 20 ©2017 Siemens Protection Devices Limited...

  • Page 101: Instruments Mode

    Displays the Second Harmonic Current. 0.00xIn 0.00xIn 0.00xIn Last Trip P/F Displays the Last Trip Fault Current.. 0.00A 0.00A 0.00A Last Trip E/F Displays the Last Trip Fault Current.. ©2017 Siemens Protection Devices Limited Chapter 2 Page 9 of 20...
  • Page 102 Phase A 0.0MVA Displays Apparent Power Phase B 0.0MVA Phase C 0.0MVA S (3P) 0.0MVA PF A 0.00 Displays Power factor PF B 0.00 PF C 0.00 PF (3P) 0.00 Chapter 2 Page 10 of 20 ©2017 Siemens Protection Devices Limited...
  • Page 103 This is the sub-group that includes all the meters that are associated with Maintenance TEST/RESET ► allows access to →to view this sub-group CB Total Trips Displays the number of CB trips experienced by the CB Count Target ©2017 Siemens Protection Devices Limited Chapter 2 Page 11 of 20...
  • Page 104 V Phase B Demand Displays the Voltage demand based on Vb. 0.00V 0.00V Mean 0.00V V Phase C Demand Displays the Voltage demand based on Vc. 0.00V 0.00V Mean 0.00V Chapter 2 Page 12 of 20 ©2017 Siemens Protection Devices Limited...
  • Page 105 TEST/RESET ► allows access to this sub- →to view group Displays the state of Virtual Outputs 1 to 8 (The number of virtual V 1-8 ---- ---- ©2017 Siemens Protection Devices Limited Chapter 2 Page 13 of 20...
  • Page 106 This is the sub-group that includes all the meters that are associated with QuickLogic Equations TEST/RESET ► allows →to view access to this sub-group E 1-4 ---- E1 Equation E2 Equation E3 Equation E4 Equation Chapter 2 Page 14 of 20 ©2017 Siemens Protection Devices Limited...

  • Page 107: Fault Data Mode

    TEST/RESET► button. Each record contains data on the operated elements, analogue values and LED flag states at the time of the fault. The data is viewed by scrolling down using the ▼ button. ©2017 Siemens Protection Devices Limited Chapter 2 Page 15 of 20...

  • Page 108: Section 2: Setting & Configuring The Relay Using Reydisp Evolution

    Front USB connection To connect your pc locally via the front USB port. Figure 2.1-1 USB connection to PC 2.1.2 Rear RS485 connection Figure 2.1-2 RS485 connection to PC Chapter 2 Page 16 of 20 ©2017 Siemens Protection Devices Limited...

  • Page 109: Optional Rear En100 Ethernet Module (Com3)

    EN100 Module – Duplex-LC Interface Green LED (Physical Link) Off – No link On – Link present Yellow LED (Activity) Off – No traffic On/flashing - Traffic Figure 2-3 EN100 Ethernet Module ©2017 Siemens Protection Devices Limited Chapter 2 Page 17 of 20...

  • Page 110: Configuring Relay Serial Data Communication

    This setting is only visible when DNP3 The address of the master to which unsolicited Unsolicited Events is events will be sent. Enabled DNP3 Application Timeout 5, 6 ... 299, 300 Chapter 2 Page 18 of 20 ©2017 Siemens Protection Devices Limited...

  • Page 111: Connecting To The Relay For Setting Via Reydisp

    Select ‘Connect’ to initiate the relay-PC connection. Figure 2.1-4 PC Comm Port Selection The relay settings can now be configured using the Reydisp software. Please refer to the Reydisp Evolution Manual for further guidance. ©2017 Siemens Protection Devices Limited Chapter 2 Page 19 of 20...

  • Page 112: Configuring The User Texts Using Reydisp Language Editor

    Care should be taken to ensure a unique file name is given including a version control reference. The user will be prompted to restart the relay to activate the language file. Please refer to the Language Editor Manual for further guidance. Chapter 2 Page 20 of 20 ©2017 Siemens Protection Devices Limited...

  • Page 113: The Copyright And Other Intellectual Property Rights In This Document, And In Any Model Or Article Produced From It (And Including

    Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 114 7SR11 & 7SR12 Performance Specification ©2017 Siemens Protection Devices Limited Chapter 3 Page 2 of 56...
  • Page 115 2.7 49 Thermal Overload ..........................25 2.7.1 Reference ..........................25 2.7.2 Operate and Reset Level ......................25 2.7.3 Operate and Reset Time ......................25 2.8 50 Instantaneous Overcurrent ....................... 27 ©2017 Siemens Protection Devices Limited Chapter 3 Page 3 of 56...
  • Page 116 2.22 Directional SEF - Wattmetric ......................... 50 2.22.1 Reference ..........................50 2.22.2 Operate and Reset Level ......................50 2.22.3 Operate and Reset Time ......................50 2.23 81 Under/over frequency ........................51 ©2017 Siemens Protection Devices Limited Chapter 3 Page 4 of 56...
  • Page 117 IEC IDMTL Curves (Time Multiplier=1) ..............33 Figure 2.12-2 ANSI IDMTL Operate Curves (Time Multiplier=1) ............ 34 Figure 2.12-3 ANSI Reset Curves (Time Multiplier=1) ..............35 Figure 2.12-4 IEC Reset Curves (Time Multiplier=1) ..............36 ©2017 Siemens Protection Devices Limited Chapter 3 Page 5 of 56...

  • Page 118: Section 1: Common Functions

    Projection (from front of panel) 31 mm See appropriate case outline and panel drilling drawing, as specified in Diagrams and Parameters of the Installation section, for complete dimensional specifications. ©2017 Siemens Protection Devices Limited Chapter 3 Page 6 of 56...

  • Page 119: Weights

    7SR1103, E6 case 4.15 kg 7SR1107, E6 case 4.15 kg 7SR1205, E6 case 4.15 kg 7SR1206, E6 case 4.15 kg 7SR1208, E6 case 4.15 kg Additional Transport packaging: add 0.4kg ©2017 Siemens Protection Devices Limited Chapter 3 Page 7 of 56...

  • Page 120: Energising Quantities

    0.03 0.03 0.03 0.03 0.03 0.03 Per LED – Yellow 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Per Binary Output 0.35 0.35 0.35 0.35 Optional IEC 61850 Comms Interface ©2017 Siemens Protection Devices Limited Chapter 3 Page 8 of 56...
  • Page 121 (1) Using fuses as on/off switches or allowing batteries to run at very low cell voltages for extended periods and then attempting to re-charge them are examples of such auxiliary supply conditions. ©2017 Siemens Protection Devices Limited Chapter 3 Page 9 of 56...

  • Page 122: Ac Analogue Current

    1.2.3.1 Burden Attribute Value - 0.02 VA @ 63.5 V , ≤ 0.06 VA @ 110 Vrms AC Burden 1.2.3.2 Thermal Withstand Attribute Value Overvoltage Withstand (Continuous) 300 Vrms ©2017 Siemens Protection Devices Limited Chapter 3 Page 10 of 56...

  • Page 123: Binary (Digital) Outputs

    * The binary inputs have a low minimum operate current and can be set for high speed operation. To achieve immunity from AC interference, a BI pick-up delay of typically one-cycle can be applied. This setting is applied by default. ©2017 Siemens Protection Devices Limited Chapter 3 Page 11 of 56...

  • Page 124: Functional Performance

    Real Time Clock 1.3.2.1 Internal Clock The specification below applies only while no external synchronisation signal (e.g. 60870-5-103) is being received. Attribute Value ± 3.5 p.p.m Accuracy (-10 to +55 ©2017 Siemens Protection Devices Limited Chapter 3 Page 12 of 56...

  • Page 125: Data Communication Interfaces

    RJ45 100BaseT in acc. With IEEE802.3 Recommended Cable Minimum: Category 5 S/FTP (shielded/screened twisted pair) Transmission Speed 100 MBits/s Test Voltage (with regard to socket) 500 VAC 50 Hz Bridgeable distance 20 m ©2017 Siemens Protection Devices Limited Chapter 3 Page 13 of 56...

  • Page 126: Environmental Performance

    Pollution Degree 2 1.5.1.7 IP Ratings IEC60529 Type Level Rear IP 10 Installed with cover on Front IP 51 Rear IP 10 Installed with cover removed Front IP 20 ©2017 Siemens Protection Devices Limited Chapter 3 Page 14 of 56...

  • Page 127: Emissions

    Normal operation (Ripple) (DC auxiliary supply) Max & min RV to Relay Reset Gradual Shut-down/ Start-up 5minutes Relay Off (DC auxiliary supply) 0V to min & max Relay Restart ©2017 Siemens Protection Devices Limited Chapter 3 Page 15 of 56...
  • Page 128 Surge Immunity IEC 60255-22-5; IEC 61000-4-5 Type Level Variation Analog Inputs: ≤ 10% 4.0 kV Line to Earth Case, Aux Power & I/O: ≤ 10% 2.0 kV Line to Earth ©2017 Siemens Protection Devices Limited Chapter 3 Page 16 of 56...

  • Page 129: Mechanical

    X-plane - 3.5mm displacement below crossover freq (8-9Hz) 1.0gn above ≤ 5 % Seismic response Y-plane - 1.5mm displacement below crossover freq (8-9Hz) 0.5gn above 1.5.4.4 Mechanical Classification Type Level Durability > 10 operations ©2017 Siemens Protection Devices Limited Chapter 3 Page 17 of 56...

  • Page 130: Section 2: Protection Functions

    1.1 to 0.5 xVs: 58 ms, ± 10ms Undervoltage , ± 1 % or ± 10ms Operate time following delay basic ± 1 % or ± 10ms Repeatability Disengaging time < 80 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 18 of 56...

  • Page 131: Power

    , ± 1 % or ± 10ms Operate time following delay basic Disengaging time < 40 ms Operate Threshold 2.2.4 Attribute Value 2.5 % In Minimum levels for operation 2.5% Vn ©2017 Siemens Protection Devices Limited Chapter 3 Page 19 of 56...

  • Page 132: Sensitive Power

    , ± 1 % or ± 10ms Operate time following delay basic Disengaging time < 40 ms Operate Threshold 2.3.4 Attribute Value 2.5 % In Minimum levels for operation 2.5% Vn ©2017 Siemens Protection Devices Limited Chapter 3 Page 20 of 56...

  • Page 133: Undercurrent

    , ± 1 % or ± 10ms Operate time following delay basic ± 1 % or ± 10ms Repeatability Overshoot time < 40 ms Disengaging time < 60 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 21 of 56...

  • Page 134: Negative Phase Sequence Overcurrent

    105 % Is, ± 4 % or ± 1% In Operate level ≥ 95 % I Reset level ± 1 % Repeatability ≤ 5 % -10 °C to +55 °C Variation ≤ 5 % ± 5 % ©2017 Siemens Protection Devices Limited Chapter 3 Page 22 of 56...

  • Page 135: Operate And Reset Time (46It)

    IEC-LTI : R = 80 , ± 1 % or ± 20ms ± 1 % or ± 20ms Repeatability Overshoot time < 40 ms Disengaging time < 60 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 23 of 56...

  • Page 136: Negative Phase Sequence Voltage

    , ± 2 % or ± 20ms Operate time following delay basic ± 1 % or ± 20ms Repeatability Overshoot time < 40 ms Disengaging time < 90 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 24 of 56...

  • Page 137: Thermal Overload

    × Overload trip operate time   (Is: 0.3 – 3 x In) where I = prior current ± 100ms Repeatability Note:- Fastest operate time is at 10 xIs ©2017 Siemens Protection Devices Limited Chapter 3 Page 25 of 56...
  • Page 138 τ = 1000 mins 1000 Time (sec) τ = 100 mins τ = 10 mins τ = 1 min Current (multiple of setting) Figure 2.7-1 Thermal Overload Protection Curves ©2017 Siemens Protection Devices Limited Chapter 3 Page 26 of 56...

  • Page 139: Instantaneous Overcurrent

    , ± 1 % or ± 10ms Operate time following delay basic ± 1 % or ± 10ms Repeatability Overshoot time < 40 ms Disengaging time < 50 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 27 of 56...

  • Page 140: Instantaneous Measured Earth Fault

    , ± 1 % or ± 10ms Operate time following delay basic ± 1 % or ± 10ms Repeatability Overshoot time < 40 ms Disengaging time < 50 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 28 of 56...

  • Page 141: Instantaneous Derived Earth Fault

    , ± 1 % or ± 10ms Operate time following delay basic ± 1 % or ± 10ms Repeatability Overshoot time < 40 ms Disengaging time < 57 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 29 of 56...

  • Page 142: 50Sef Instantaneous Sensitive Earth Fault

    Operate time following delay basic ± 1 % or ± 10ms Repeatability Overshoot time < 40 ms Disengaging time < 50 ms ≤ 5 % Variation ± 5 % ©2017 Siemens Protection Devices Limited Chapter 3 Page 30 of 56...

  • Page 143: Time Delayed Overcurrent

    , ± 5 % absolute or ± 30 ms, − Reset time ANSI DECAYING for char = ANSI-MI : R = 4.85 ANSI-VI : R = 21.6 ANSI-EI : R = 29.1 ©2017 Siemens Protection Devices Limited Chapter 3 Page 31 of 56...
  • Page 144 Figure 2.12-2 and Figure 2.12-3 show the ANSI operate and reset curves. These operate times apply to non- directional characteristics. Where directional control is applied then the directional element operate time should be added to give total maximum operating time. ©2017 Siemens Protection Devices Limited Chapter 3 Page 32 of 56...
  • Page 145 7SR11 & 7SR12 Performance Specification 1000 Time (sec) Long Time Inverse Normal Inverse Very Inverse Extremely Inverse 50 60 Current (multiples of setting) Figure 2.12-1 IEC IDMTL Curves (Time Multiplier=1) ©2017 Siemens Protection Devices Limited Chapter 3 Page 33 of 56...
  • Page 146 7SR11 & 7SR12 Performance Specification 1000 Time (sec) Moderately Inverse Very Inverse Extremely Inverse 50 60 Current (multiples of setting) Figure 2.12-2 ANSI IDMTL Operate Curves (Time Multiplier=1) ©2017 Siemens Protection Devices Limited Chapter 3 Page 34 of 56...
  • Page 147 7SR11 & 7SR12 Performance Specification 1000 Extremely Inverse Very Inverse Time (sec) Moderately Inverse 0.8 0.9 Current (multiples of setting) Figure 2.12-3 ANSI Reset Curves (Time Multiplier=1) ©2017 Siemens Protection Devices Limited Chapter 3 Page 35 of 56...
  • Page 148 7SR11 & 7SR12 Performance Specification Figure 2.12-4 IEC Reset Curves (Time Multiplier=1) ©2017 Siemens Protection Devices Limited Chapter 3 Page 36 of 56...

  • Page 149: Time Delayed Measured Earth Fault

    , ± 5 % absolute or ± 30 ms, − Reset time ANSI DECAYING for char = ANSI-MI : R = 4.85 ANSI-VI : R = 21.6 ANSI-EI : R = 29.1 ©2017 Siemens Protection Devices Limited Chapter 3 Page 37 of 56...
  • Page 150 Figure 2.12-2 and Figure 2.12-3 show the ANSI operate and reset curves. These operate times apply to non- directional characteristics. Where directional control is applied then the directional element operate time should be added to give total maximum operating time. ©2017 Siemens Protection Devices Limited Chapter 3 Page 38 of 56...

  • Page 151: Time Delayed Derived Earth Fault

    , ± 5 % absolute or ± 30 ms, − Reset time ANSI DECAYING for char = ANSI-MI : R = 4.85 ANSI-VI : R = 21.6 ANSI-EI : R = 29.1 ©2017 Siemens Protection Devices Limited Chapter 3 Page 39 of 56...
  • Page 152 Figure 2.12-2 and Figure 2.12-3 show the ANSI operate and reset curves. These operate times apply to non- directional characteristics. Where directional control is applied then the directional element operate time should be added to give total maximum operating time. ©2017 Siemens Protection Devices Limited Chapter 3 Page 40 of 56...

  • Page 153: 51Sef Time Delayed Sensitive Earth Fault

    = ANSI-MI : A = 0.0515, B = 0.114, P = 0.02 ANSI-VI : A = 19.61, B = 0.491, P = 2.0 ANSI-EI : A = 28.2, B = 0.1217, P = 2.0 ©2017 Siemens Protection Devices Limited Chapter 3 Page 41 of 56...
  • Page 154 Figure 2.12-2 and Figure 2.12-3 show the ANSI operate and reset curves. These operate times apply to non- directional characteristics. Where directional control is applied then the directional element operate time should be added to give total maximum operating time. ©2017 Siemens Protection Devices Limited Chapter 3 Page 42 of 56...

  • Page 155: Voltage Controlled Overcurrent

    Operate and Reset Time As per Phase Fault Shaped Characteristic Element (ANSI 51). Where Pickup Level = Is for Voltage > Vs Pickup Level = (Is x m) for Voltage < Vs ©2017 Siemens Protection Devices Limited Chapter 3 Page 43 of 56...

  • Page 156: 50Afd Arc Flash Detector

    50AFD Overcurrent operate time 10 ms – 16 ms basic AFD Zone Operate time (Flash & 50AFD) 15 ms – 25 ms ± 10 ms Repeatability Disengaging time < 50 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 44 of 56...

  • Page 157: Power Factor

    , ± 1 % or ± 10ms Operate time following delay basic Disengaging time < 80 ms Operate Threshold 2.18.4 Attribute Value 2.5 % In Minimum levels for operation 2.5% Vn ©2017 Siemens Protection Devices Limited Chapter 3 Page 45 of 56...

  • Page 158: Neutral Voltage Displacement

    Variation ≤ 5 % ± 5 % Operate and Reset Time (59NIT) Attribute Value 65 ms, ± 20ms Starter operate time basic Applied Current (for Operate-Time) 10 x Vs ©2017 Siemens Protection Devices Limited Chapter 3 Page 46 of 56...
  • Page 159 Reset Time , ± 1 % or ± 40ms char = DTL ± 1 % or ± 20ms Repeatability Overshoot time < 40 ms Disengaging time < 100 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 47 of 56...

  • Page 160: Restricted Earth Fault Protection

    0 to 5 xIs, 35 ms, ± 10ms , ± 1% or ± 10ms Operate time following delay basic ± 1% or ± 10ms Repeatability Overshoot time < 40 ms Disengaging time < 50 ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 48 of 56...

  • Page 161: 67/67N Directional Overcurrent & Earth Fault

    Operate and Reset Time 2.21.4 Attribute Value typically 32, < 40 ms at characteristic angle Operate time + 50/51 element operate time Reset time typically < 65 ms at characteristic angle ©2017 Siemens Protection Devices Limited Chapter 3 Page 49 of 56...

  • Page 162: Directional Sef - Wattmetric

    ≤ 5 % Variation -10 °C to +55 °C Operate and Reset Time 2.22.3 Attribute Value Element basic <50ms basic operate time ± 1 % or ± 10ms Repeatability ©2017 Siemens Protection Devices Limited Chapter 3 Page 50 of 56...

  • Page 163: Under/Over Frequency

    Maximum < 200ms and 1.0 Hz/sec) , ± 1 % or ± 10ms Operate time following delay basic ± 1 % or ± 10ms Repeatability < 100 ms Disengaging time ©2017 Siemens Protection Devices Limited Chapter 3 Page 51 of 56...

  • Page 164: Section 3: Supervision Functions

    , ± 1 % or ± 20ms Operate time basic ± 1 % or ± 20ms Repeatability ± 5 % ≤ 5 % Variation harmonics to f cutoff ©2017 Siemens Protection Devices Limited Chapter 3 Page 52 of 56...

  • Page 165: 50Bf Circuit Breaker Fail

    Stage 1 CBF1 , ± 1 % or ± 20ms Stage 2 CBF2 ± 1 % or ± 20ms Repeatability Overshoot < 2 x 20ms Disengaging time < 20ms ©2017 Siemens Protection Devices Limited Chapter 3 Page 53 of 56...

  • Page 166: 60Cts & 60Cts-I Current Transformer Supervision

    Operate and Reset Time 3.3.3 Attribute Value 50 ms ± 20ms Basic operate time basic , ± 1 % or ± 20ms Operate time basic ± 1 % or ± 20ms Repeatability ©2017 Siemens Protection Devices Limited Chapter 3 Page 54 of 56...

  • Page 167: 60Vts Voltage Transformer Supervision

    32 ms ± 10ms Basic operate time 0V to 2 x Vs basic ± 1 % or ± 10ms Operate time basic ± 1 % or ± 10ms Repeatability ©2017 Siemens Protection Devices Limited Chapter 3 Page 55 of 56...

  • Page 168: 74Tcs & 74Ccs Trip & Close Circuit Supervision

    Will pick-up before operation of any protection element due Element basic operate time basic to magnetic inrush Will operate until drop-off of any protection element due to Reset Time magnetic inrush ©2017 Siemens Protection Devices Limited Chapter 3 Page 56 of 56...

  • Page 169: The Copyright And Other Intellectual Property Rights In This Document, And In Any Model Or Article Produced From It (And Including

    No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 170 7SR120 Technical Manual Chapter 4 - Page 2 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 171 5.3.3 Binary Output Status Points and Control Relay Output Blocks..........62 5.3.4 Counters............................ 67 5.3.5 Analog Inputs..........................68 5.4 Additional Settings........................... 72 6. Not Applicable......................73 7. IEC61850 Protocol Support..................75 7.1 Introduction...............................75 8. Serial Modems......................77 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 3 of 84...
  • Page 172 List of Figures Fig. 2-1 Communication to Front USB Port........................8 Fig. 2-2 Communication to Multiple Devices using RS485 (Standard Port)............. 10 Fig. A1 Operating Mode Table..........................83 Chapter 4 - Page 4 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 173: Introduction

    Reydisp Evolution or Reydisp Manager Software is available, for computers running Microsoft Windows™, to connect to devices to provide operational information, post-fault analysis, setting interrogation and editing facilities etc. Configuration software can be downloaded from our website http://www.siemens.com/energy. This section specifies connection details and lists the information available through the individual protocols.
  • Page 174 7SR120 Technical Manual Chapter 4 - Page 6 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 175: Physical Connection

    IEC 60870-5-103 protocol connection to Reydisp. Any port not required can be disabled by setting its protocol to OFF. When connecting to Reydisp Evolution software the protocol for the relevant port should be set to IEC60870-5-103. © 2017 Siemens Protection Devices Limited Chapter 4 - Page 7 of 84...

  • Page 176: Usb Interface (Com2)

    The 2-wire RS485 communication port is located on the rear of the relay and can be connected using a suitable RS485 120 Ohm screened twisted pair cable. Chapter 4 - Page 8 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 177 EVEN accordance with the master device. Local Refer to Appendix COM1-RS485 Remote 1, page 83, for Local or Remote Mode further explanation Remote © 2017 Siemens Protection Devices Limited Chapter 4 - Page 9 of 84...
  • Page 178 System station available To Control System RS 485 Twisted pair Cable RS485 RS485 RS485 Bus Termination Polarity Fig. 2-2 Communication to Multiple Devices using RS485 (Standard Port) Chapter 4 - Page 10 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 179: Iec 60870-5-103 Definitions

    The Station Address of the port being used must be set to a suitable address within the range 0 - 254 to enable communication. This can be set by the Communications Menu : COM n-xxxxx Station Address setting. © 2017 Siemens Protection Devices Limited Chapter 4 - Page 11 of 84...

  • Page 180: Cause Of Transmission

    Negative command acknowledge Note: Events listing a GI cause of transmission can be raised and cleared; other events are raised only. Chapter 4 - Page 12 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 181: Application Service Data Unit (Asdu) Type

    2 Time tagged message (relative time) (monitor direction) 3.1 Measurands I 4 Time-tagged measurands with relative time 5 Identification message 6 Time synchronisation 7 General Interrogation Initialization 9 Measurands II 20 General command © 2017 Siemens Protection Devices Limited Chapter 4 - Page 13 of 84...

  • Page 182: Point List

    185 Quick Logic E4 1 SE, GI 5 Binary Input 5 1 SE, GI 6 Binary Input 6 1 SE, GI 1 Virtual Input 1 1 SE, GI Chapter 4 - Page 14 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 183 3 Reset CU 5 SE 4 Start/Restart 5 SE 5 Power On 1 SE, GI 1 SE, GI 16 Auto-reclose active 20 Ack, Nak 1 SE 19 LED Reset © 2017 Siemens Protection Devices Limited Chapter 4 - Page 15 of 84...
  • Page 184 2 SE, GI 19 50N-2 2 SE, GI 20 51G-2 2 SE, GI 21 50G-2 2 SE, GI 22 51-3 2 SE, GI 23 50-3 2 SE, GI Chapter 4 - Page 16 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 185 115 Open CB Failed 1 SE, GI 116 Reclaim 1 SE, GI 117 Lockout 1 SE, GI 119 Successful DAR Close 1 SE 120 Successful Man Close 1 SE © 2017 Siemens Protection Devices Limited Chapter 4 - Page 17 of 84...
  • Page 186 184 CB Freq Ops Count 4 SE 222 37-PhA 2 SE, GI 223 37-PhB 2 SE, GI 224 37-PhC 2 SE, GI 231 50BF-PhA 2 SE, GI Chapter 4 - Page 18 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 187 10 AFD Zone 3 1 SE, GI 11 AFD Zone 4 Flash 1 SE, GI 12 AFD Zone 4 1 SE, GI 13 AFD Zone 5 Flash 1 SE, GI © 2017 Siemens Protection Devices Limited Chapter 4 - Page 19 of 84...
  • Page 188 165 User DP Command 8 20 Ack, Nak 1 SE 200 CB 1 Trip & Reclose 20 Ack, Nak 1 SE 201 CB 1 Trip & Lockout 20 Ack, Nak Chapter 4 - Page 20 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 189 0 SE, GI 7 Binary Output 7 0 SE, GI 8 Binary Output 8 0 SE, GI 1 LED 1 0 SE, GI 2 LED 2 0 SE, GI © 2017 Siemens Protection Devices Limited Chapter 4 - Page 21 of 84...
  • Page 190 75 Fault Reverse/Busbar 0 SE, GI 84 General Start/Pick-up 0 SE, GI 85 Breaker Failure 0 SE 90 Trip I> 0 SE 91 Trip I>> 0 SE Chapter 4 - Page 22 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 191 0 SE, GI 63 37-2 0 SE, GI 66 37SEF-1 2 SE, GI 67 37SEF-2 2 SE, GI 70 46BC 0 SE, GI 81 27/59-1 0 SE, GI © 2017 Siemens Protection Devices Limited Chapter 4 - Page 23 of 84...
  • Page 192 0 SE, GI 172 Act Energy Exp 0 SE 173 Act Energy Imp 0 SE 174 React Energy Exp 0 SE 175 React Energy Imp 0 SE Chapter 4 - Page 24 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 193 110 CB Wear CB A 0 SE 111 CB Wear CB B 0 SE 112 CB Wear CB C 0 SE 113 CB Wear CB A Remaining 0 SE © 2017 Siemens Protection Devices Limited Chapter 4 - Page 25 of 84...
  • Page 194 201 CB 1 Trip & Lockout 0 SE 255 Blocked By Interlocking 0 SE, GI 0 General Interrogation (GI) Initiation 7 Init. GI 0 General Interrogation (GI) End 8 End of GI Chapter 4 - Page 26 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 195: Measurands

    3.4.3 Disturbance Recorder Actual Channel (ACC) Numbers The following Disturbance Recorder channel numbers apply to this device. Description 1 V1 2 V2 3 V3 5 Ia 6 Ib 7 Ic 8 Ig1 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 27 of 84...
  • Page 196 7SR120 Technical Manual Chapter 4 - Page 28 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 197: Modbus Definitions

    Communication via MODBUS over Ethernet requires external devices. Please refer to the documents TCPIP Catalogue Sheet and TCPIP Interface Technical Guidance Notes for more information. Definitions with shaded area are not available on all relay models. © 2017 Siemens Protection Devices Limited Chapter 4 - Page 29 of 84...

  • Page 198: Modbus Register Data Types

    1,000,000 as a float (from above) we have 49742400h. Assume this is stored in the registers 30001 and 30002, it would look as follows. Address Value 30001 4974 Chapter 4 - Page 30 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 199: Fp_32Bits_3Dp

    5678 we have 162Eh. Assume this is stored in the register 30001, it would look as follows: Address Value 30001 162E On reception this register should be interpreted as a 16 bit integer. © 2017 Siemens Protection Devices Limited Chapter 4 - Page 31 of 84...

  • Page 200: Event

    Measurand format R32.23, sent least significant byte first. The following tables show the fields in the different event records as they are returned. Byte Content FUN INF ms L Event Type 1 Format. Chapter 4 - Page 32 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 201: Eventcount

    Most Significant Bit (MSB). Bit values can only be zero or one. Any unused bits will be set to zero. BITSTRING & MODBUS © 2017 Siemens Protection Devices Limited Chapter 4 - Page 33 of 84...
  • Page 202 0905h. Assume this is stored in the register 30001, it would look as follows: Address Value 30001 0905 On reception this register should be interpreted as a 16 bit integer. Chapter 4 - Page 34 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 203: Point List

    00209 User DP Command 2 00210 User DP Command 3 00211 User DP Command 4 00212 User DP Command 5 00213 User DP Command 6 00214 User DP Command 7 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 35 of 84...

  • Page 204: Inputs (Read Only Binary Values)

    10129 50-2 10130 51N-2 10131 50N-2 10132 51G-2 10133 50G-2 10134 51-3 10135 50-3 10136 51N-3 10137 50N-3 10138 51G-3 10139 50G-3 10140 51-4 10141 50-4 10142 51N-4 Chapter 4 - Page 36 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 205 10185 E/F Inst Protection Inhibited 10186 SEF Inst Protection Inhibited 10187 Ext Inst Protection Inhibited 10202 51SEF-1 10203 50SEF-1 10204 51SEF-2 10205 50SEF-2 10206 51SEF-3 10207 50SEF-3 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 37 of 84...
  • Page 206 10370 37-PhB 10371 37-PhC 10378 50BF-PhA 10379 50BF-PhB 10380 50BF-PhC 10381 50BF-EF 10383 60 CTS-I-PhA 10384 60 CTS-I-PhB 10385 60 CTS-I-PhC 10390 Trip PhA 10391 Trip PhB Chapter 4 - Page 38 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 207 10904 User SP Command 5 10905 User SP Command 6 10906 User SP Command 7 10907 User SP Command 8 10908 User DP Command 1 10909 User DP Command 2 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 39 of 84...

  • Page 208: Input Registers (Read Only Registers)

    30020 Vc Primary FP_32BITS_3DP 1.000000 Vc V 30022 Va Secondary FP_32BITS_3DP 1.000000 Va V 30024 Vb Secondary FP_32BITS_3DP 1.000000 Vb V 30026 Vc Secondary FP_32BITS_3DP 1.000000 Vc V Chapter 4 - Page 40 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 209 30128 Apparent Power A FP_32BITS_3DP 0.000001 Phase A VA 30130 Apparent Power B FP_32BITS_3DP 0.000001 Phase B VA 30132 Apparent Power C FP_32BITS_3DP 0.000001 Phase C VA © 2017 Siemens Protection Devices Limited Chapter 4 - Page 41 of 84...
  • Page 210 30327 V Phase BC Max FP_32BITS_3DP 1.000000 Vbc Max Demand 30329 V Phase CA Max FP_32BITS_3DP 1.000000 Vca Max Demand 30341 LED1-n BITSTRING 0.000000 Led 1-16 status Chapter 4 - Page 42 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 211: Holding Registers (Read Write Registers)

    1.000000 Vc Degrees 40048 Vzps FP_32BITS_3DP 1.000000 Vzps V 40050 Vpps FP_32BITS_3DP 1.000000 Vpps V 40052 Vnps FP_32BITS_3DP 1.000000 Vnps V 40054 Vzps FP_32BITS_3DP 1.000000 Vzps Degrees © 2017 Siemens Protection Devices Limited Chapter 4 - Page 43 of 84...
  • Page 212 1.000000 React Energy Imp 40152 Thermal Status Ph A UINT16 1.000000 Thermal Status Ph A % 40153 Thermal Status Ph B UINT16 1.000000 Thermal Status Ph B % Chapter 4 - Page 44 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 213 40356 CB Wear B FP_32BITS_3DP 0.000001 CB Wear B 40358 CB Wear C FP_32BITS_3DP 0.000001 CB Wear C 40360 CB Wear A Remaining FP_32BITS_3DP 1.000000 CB Wear A Remaining © 2017 Siemens Protection Devices Limited Chapter 4 - Page 45 of 84...
  • Page 214 0.000000 8 Registers 40404 Frequency Max FP_32BITS_3DP 1.000000 Frequency Max 40406 S 3P Max FP_32BITS_3DP 0.000010 S 3P Max 40472 CB Trip Time Meter FP_32BITS_3DP 1.000000 CB Trip Time Chapter 4 - Page 46 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 215: Dnp3 Definitions

    (Also see the DNP 3.0 Implementation Table in Section 5.2, beginning on page 50). Vendor Name: Siemens Protection Devices Ltd. Device Name: 7SR120, using the Triangle MicroWorks, Inc. DNP3 Slave Source Code Library, Version 3. Device Function: Highest DNP Level Supported:...
  • Page 216 Configurable 16 Bits Default Object 32 Bits Default Variation: _____ Other Value: _____ Point-by-point list attached Point-by-point list attached Sends Multi-Fragment Responses: Configurable Sequential File Transfer Support: Chapter 4 - Page 48 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 217 Append File Mode Custom Status Code Strings Permissions Field File Events Assigned to Class File Events Send Immediately Multiple Blocks in a Fragment Max Number of Files Open © 2017 Siemens Protection Devices Limited Chapter 4 - Page 49 of 84...

  • Page 218: Implementation Table

    (unsol. resp) 00, 01 (start-stop) Binary Output 1 (read) 06 (no range, or all) - Any Variation 22 (assign class) 07, 08 (limited qty) 17, 27, 28 (index) Chapter 4 - Page 50 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 219 06 (no range, or all) 1 (read) 17, 28 (index see note 1) (without Flag) 07, 08 (limited qty) (response) - see note 2) 17, 27, 28 (index) © 2017 Siemens Protection Devices Limited Chapter 4 - Page 51 of 84...
  • Page 220 07, 08 (limited qty) (unsol. resp) 16-Bit Counter Change 06 (no range, or all) 1 (read) (response) 17, 28 (index) Event (with Time) 07, 08 (limited qty) Chapter 4 - Page 52 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 221 32-Bit Frozen Analog Input (with Time of freeze) 16-Bit Frozen Analog Input (with Time of freeze) 32-Bit Frozen Analog Input (without Flag) 16-Bit Frozen Analog Input (without Flag) © 2017 Siemens Protection Devices Limited Chapter 4 - Page 53 of 84...
  • Page 222 00, 01 (start-stop) Short Floating Point 1 (read) 06 (no range, or all) 17, 28 (index Analog Input Deadband (response) 07, 08 (limited qty) - see note 2) Chapter 4 - Page 54 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 223 00 or 01. (For change-event objects, qualifiers 17 or 28 are always responded.) Note 3: Writes of Internal Indications are only supported for index 7 (Restart IIN1-7). © 2017 Siemens Protection Devices Limited Chapter 4 - Page 55 of 84...

  • Page 224: Point List

    42 Start/Pick-up L1 43 Start/Pick-up L2 44 Start/Pick-up L3 45 General Start/Pick-up 46 VT Fuse Failure 47 Earth Fault Forward/Line 48 Earth Fault Reverse/Busbar 49 Start/Pick-up N Chapter 4 - Page 56 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 225 80 Auto-reclose active 81 CB on by auto reclose 82 Reclaim 83 Lockout 86 51-3 87 50-3 88 51N-3 89 50N-3 90 51G-3 91 50G-3 92 51-4 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 57 of 84...
  • Page 226 211 50BF Stage 1 212 50BF Stage 2 213 49-Alarm 214 49-Trip 215 64H 217 37-1 218 37-2 219 CB Alarm 223 SEF Forward/Line 224 SEF Reverse/Busbar Chapter 4 - Page 58 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 227 302 27/59 PhA 303 27/59 PhB 304 27/59 PhC 330 32-1 331 32-2 332 32S-1 333 32S-2 334 55-1 335 55-2 373 37SEF-1 374 37SEF-2 411 Setting G1 selected © 2017 Siemens Protection Devices Limited Chapter 4 - Page 59 of 84...
  • Page 228 803 Binary Output 3 804 Binary Output 4 805 Binary Output 5 806 Binary Output 6 807 Binary Output 7 808 Binary Output 8 871 Cold Start Chapter 4 - Page 60 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 229 1079 AFD Zone 4 1080 AFD Zone 5 Flash 1081 AFD Zone 5 1082 AFD Zone 6 Flash 1083 AFD Zone 6 5.3.2 Double Bit Input Points © 2017 Siemens Protection Devices Limited Chapter 4 - Page 61 of 84...
  • Page 230 The default select/control buffer size is large enough to hold 10 of the largest select requests possible. Binary outputs are by default NOT returned in a class zero interrogation. Note, not all points listed here apply to all builds of devices. Chapter 4 - Page 62 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 231 37 Settings Group 4 Latch On Latch On Close Pulse On Pulse On Pulse Off Pulse Off 42 Auto-reclose on/off Latch On Latch On Latch Off Latch Off Close © 2017 Siemens Protection Devices Limited Chapter 4 - Page 63 of 84...
  • Page 232 Pulse Off 54 CB 1 Latch Off Latch On Close Latch Off Trip CB 1 Trip & Reclose, write Pulse On Pulse On only location. Latch On Chapter 4 - Page 64 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 233 Latch On Pulse On Close Pulse On 104 User SP Command 6. Latch On Pulse On Close Pulse On 105 User SP Command 7. Pulse On Latch On © 2017 Siemens Protection Devices Limited Chapter 4 - Page 65 of 84...
  • Page 234 Pulse On 113 User DP Command 7. Latch Off Pulse Off Close Trip Pulse On Pulse On 114 User DP Command 8. Pulse Off Pulse Off Latch On Chapter 4 - Page 66 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 235 Counters are by default returned in a class zero interrogation. Note, not all points listed here apply to all builds of devices. © 2017 Siemens Protection Devices Limited Chapter 4 - Page 67 of 84...

  • Page 236: Counters

    The default analog input event buffer size is set 30. The analog input event mode is set to Most Recent, only most recent event for each point is stored. Chapter 4 - Page 68 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 237 100.000 0.100 45 In Nominal 100.000 0.100 46 Ig Primary 1.000 100.000 47 Ig Secondary 1000.000 0.100 48 Ig Nominal 1000.000 0.100 51 Izps Nominal 100.000 0.100 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 69 of 84...
  • Page 238 100.000 103 Vn Secondary 10.000 1.000 108 I Phase A Max 1.000 100.000 109 I Phase B Max 1.000 100.000 110 I Phase C Max 1.000 100.000 Chapter 4 - Page 70 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 239 188 CB Wear B Remaining 1.000 1.000 189 CB Wear C Remaining 1.000 1.000 190 CB Wear Minimum 1.000 1.000 192 Freq Last Trip 1.000 1.000 196 Frequency Max 100.000 1.000 © 2017 Siemens Protection Devices Limited Chapter 4 - Page 71 of 84...

  • Page 240: Additional Settings

    Unsolicited Events set to Enabled. Setting is only visible DNP3 when any port Application 5, 6 ... 299, 300 As Required Protocol is set to Timeout DNP3. Chapter 4 - Page 72 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 241: Not Applicable

    Chapter 4 - 7SR120 · Data Communications Definitions 6. Not Applicable This section intentionally left blank. © 2017 Siemens Protection Devices Limited Chapter 4 - Page 73 of 84...
  • Page 242 7SR120 Technical Manual Chapter 4 - Page 74 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 243: Iec61850 Protocol Support

    For further details refer to the following publications: • Model Implementation Conformance Statement (MICS) • Protocol Implementation Conformance Statement (PICS) • Protocol Implementation Extra Information for Testing (PIXIT) © 2017 Siemens Protection Devices Limited Chapter 4 - Page 75 of 84...
  • Page 244 7SR120 Technical Manual Chapter 4 - Page 76 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 245: Serial Modems

    Where this is not possible the local modem should be set with settings equivalent to those of the remote modem as described above. © 2017 Siemens Protection Devices Limited Chapter 4 - Page 77 of 84...
  • Page 246 7SR120 Technical Manual Chapter 4 - Page 78 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 247: Configuration

    Reydisp software Communications Editor tool. The Communications Editor is provided to allow its users to configure the Communication Protocol's Files in Reyrolle brand Relays manufactured by Siemens Protection Devices Limited (SPDL). The editor supports configuring DNP3, IEC60870-5-103, IEC60870-5-101 and MODBUS protocols.
  • Page 248 Instruments menu. The user must ensure when naming the file, they use a unique file name including the version number. Please refer to the Communications Editor User Guide for further guidance. Chapter 4 - Page 80 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 249: Glossary

    When connecting relays in an optical ring architecture, the data must be passed from one relay to the next, therefore when connecting in this method all relays must have the Data Echo ON. EN100 Siemens' Ethernet communications module supporting IEC61850, available in optical and electrical versions. Ethernet A computer networking technology.
  • Page 250 Bit (logical 1) sent to signify the end. Universal Serial Bus standard for the transfer of data. Wide Area Network. A computer network covering a large geographic area. Chapter 4 - Page 82 of 84 © 2017 Siemens Protection Devices Limited...
  • Page 251 Com1-Mode = Remote Com2 (USB) when Com2-Mode = Local when Com2-Mode = Remote Fascia Historical Information Waveform Records Event Records Fault Information Setting Information Fig. A1 Operating Mode Table © 2017 Siemens Protection Devices Limited Chapter 4 - Page 83 of 84...
  • Page 252 Tyne and Wear NE31 1TZ United Kingdom For enquiries please contact our Customer Support Centre Tel.: +49 180/524 8437 (24hrs) Fax.: +49 180/524 2471 E-Mail:support.ic@siemens.com www.siemens.com/reyrolle Template Revision 17. Chapter 4 - Page 84 of 84 © 2017 Siemens Protection Devices Limited...

  • Page 253: The Copyright And Other Intellectual Property Rights In This Document, And In Any Model Or Article Produced From It (And Including

    Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 254 7SR11 & 7SR12 Installation Guide Chapter 5 Page 2 of 32 ©2017 Siemens Protection Devices Limited...
  • Page 255 6.3 Ethernet Network Redundancy IEC 61850 ................... 30 6.3.1 RSTP – Rapid Spanning Tree Protocol .................. 30 6.3.2 PRP – Parallel Redundancy Protocol ..................31 6.3.3 HSR – High Availability Seamless Redundancy Protocol ............32 ©2017 Siemens Protection Devices Limited Chapter 5 Page 3 of 32...
  • Page 256 Figure: 6.3-2 PRP Ethernet Network Configuration ....................31 Figure: 6.3-3 HSR Ethernet Network Ring Configuration ..................32 List of Tables Table 1: Relay Weight in kg ............................9 Table 2: EN100 Redundancy availability ........................ 30 Chapter 5 Page 4 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 257: Section 1: Installation

    On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It is recommended that the relay not be removed from its case. If damage has been sustained a claim should be immediately be made against the carrier, also inform Siemens Protection Devices Limited, and the nearest Siemens agent.

  • Page 258: Earthing

    The relays and protection systems manufactured under the Reyrolle brand currently do not come within the scope of either the European WEEE or RoHS directives as they are equipment making up a fixed installation. Chapter 5 Page 6 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 259: Section 2: Equipment Operating Conditions

    Front Cover The front cover provides additional securing of the relay element within the case. The relay cover should be in place during normal operating conditions. ©2017 Siemens Protection Devices Limited Chapter 5 Page 7 of 32...

  • Page 260: Section 3: Dimensions And Panel Fixings

    DIAMETER) AND RELAYS MOUNTED USING M4 MACHINE SCREWS, NUTS AND LOCKWASHERS (SUPPLIED IN PANEL FIXING KIT). Figure: 3.1-1 Overall Dimensions (mm) and panel Drilling for Size E4 Epsilon case Chapter 5 Page 8 of 32 ©2017 Siemens Protection Devices Limited...
  • Page 261 7SR1103 with IEC61850 4.15 7SR1107 with IEC61850 4.15 7SR1205 with IEC61850 4.15 7SR1206 with IEC61850 4.15 7SR1208 with IEC61850 4.15 Additional Transport packaging: add 0.4kg Table 1: Relay Weight in kg ©2017 Siemens Protection Devices Limited Chapter 5 Page 9 of 32...

  • Page 262: Fixings

    4 off M4 Lock Washer Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of: 28 off M4, 8mm Screws 28 off M4 Lock Washer Chapter 5 Page 10 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 263: Section 4: Rear Terminal Drawings

    2) RS485 (Block ”B” Terms 14, 16, 18, 20) connection to this communication facility is by screened, twisted pair cable. On site when wiring other facilities ensure that these terminals are not obscured by other wiring runs. Cable should be RS485 compliant. ©2017 Siemens Protection Devices Limited Chapter 5 Page 11 of 32...
  • Page 264 Figure: 4.1-3 E4 Case Terminal Arrangement viewed from rear   Ethernet Comms Input Connectors To withdraw relay check rear ethernet positions are clear and remove retaining screw Figure 4.1-4 E6 Case Terminal Arrangement viewed from rear Chapter 5 Page 12 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 265: Section 5: Connection/Wiring/Diagrams

    Shows contacts internal to relay case BO 2 assembly. Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.1-1 7SR1101 Connection Diagram ©2017 Siemens Protection Devices Limited Chapter 5 Page 13 of 32...

  • Page 266: Wiring Diagram: 7Sr1102 Oc/Ef Relay With 3Bi & 5Bo

    Shows contacts internal to relay case BO 2 assembly. Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.2-1 7SR1102 Connection Diagram Chapter 5 Page 14 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 267: Wiring Diagram: 7Sr1103 Oc/Ef Relay With 6 Bi & 8Bo

    Shows contacts internal to relay case BO 2 assembly. Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.3-1 7SR1103 Connection Diagram ©2017 Siemens Protection Devices Limited Chapter 5 Page 15 of 32...

  • Page 268: Wiring Diagram: 7Sr1107 Oc/Ef Relay With 4 Bi & 8Bo

    Shows contacts internal to relay case BO 2 assembly. Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.4-1 7SR1107 Connection Diagram Chapter 5 Page 16 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 269: Wiring Diagram: 7Sr1204 Directional Ef Relay With 3Bi & 5Bo

    Shows contacts internal to relay case assembly. BO 2 Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.5-1 7SR1204 Connection Diagram ©2017 Siemens Protection Devices Limited Chapter 5 Page 17 of 32...

  • Page 270: Wiring Diagram: 7Sr1205 Directional Oc/Ef Relay With 3Bi & 5Bo

    Shows contacts internal to relay case assembly. BO 2 Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.6-1 7SR1205 Connection Diagram Chapter 5 Page 18 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 271: Wiring Diagram: 7Sr1206 Directional Oc/Ef Relay With 6Bi & 8Bo

    Shows contacts internal to relay case assembly. BO 2 Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.7-1 7SR1206 Connection Diagram ©2017 Siemens Protection Devices Limited Chapter 5 Page 19 of 32...

  • Page 272: Wiring Diagram: 7Sr1208 Directional Oc/Ef Relay With 4Bi & 8Bo

    Shows contacts internal to relay case assembly. BO 2 Contacts close when the relay chassis is withdrawn from case BO 3 BO 4 BO 5 Figure: 5.8-1 7SR1208 Connection Diagram Chapter 5 Page 20 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 273: Current Transformer Configurations

    7SR11 & 7SR12 Installation Guide Current Transformer Configurations Relay Current Description Connection Configuration Setting 50G/51G - Measured E/F ISEF 50SEF/51SEF - Measured Sensitive E/F ISEF ISEF IREF 64H – Measured Restricted E/F ©2017 Siemens Protection Devices Limited Chapter 5 Page 21 of 32...
  • Page 274 7SR11 & 7SR12 Installation Guide Ia, Ib, Ic 50/51 - Phase Overcurrent 50N/51N - Derived E/F CT/VT CONFIG: Selects 1 or 5A Phase Current CT ratio for Input primary meters Phase CT Ratio Chapter 5 Page 22 of 32 ©2017 Siemens Protection Devices Limited...
  • Page 275 Derived E/F 50G/51G - Measured E/F CT/VT CONFIG: Selects 1 or 5A Phase Current CT ratio for Input primary meters Phase CT Ratio Earth Current Input Earth CT Ratio ©2017 Siemens Protection Devices Limited Chapter 5 Page 23 of 32...
  • Page 276 Derived E/F 50G/51G - Measured E/F CT/VT CONFIG: Selects 1 or 5A Phase Current CT ratio for Input primary meters Phase CT Ratio Earth Current Input Earth CT Ratio Chapter 5 Page 24 of 32 ©2017 Siemens Protection Devices Limited...
  • Page 277 Ia, Ib, Ic Phase Overcurrent Derived E/F Transformer Neutral Measured Standby EF Standby E/F CT/VT CONFIG: Selects 1 or 5A Phase Current CT ratio for Input primary meters Phase CT Ratio ©2017 Siemens Protection Devices Limited Chapter 5 Page 25 of 32...
  • Page 278 Phase CT Ratio CT/VT CONFIG: Selects 1 or 5A for Sensitive Power Earth Current input Input CT/VT CONFIG: CT ratio for primary meters for Earth CT Ratio Sensitive Power input Chapter 5 Page 26 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 279: Voltage Transformer Configurations

    Phase – Phase Calculated No ZPS available Vab, Vbc, 3Vo 67 & 67N & 67G 47, 59N, 27/59 & 81 Phase – Neutral Calculated Phase – Phase Phase Vca Calculated ©2017 Siemens Protection Devices Limited Chapter 5 Page 27 of 32...

  • Page 280: Section 6: Data Comms Connections

    Rear terminals Rear terminals twisted pair twisted pair To Control RS485 Twisted pair screened cable System Bus Termination Polarity RS485 RS485 RS485 Figure: 6.1-1 RS485 Data Comms Connections Between Relays Chapter 5 Page 28 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 281: Additional (Optional) Ethernet Connection For Iec 61850

    Ch 3 Ch n Ch 1 Ch 2 62.5/125 µm fibre optic with Duplex LC connectors or RJ45 electrical connectors Figure: 6.2-2 Ethernet connection for IEC 61850 (ring connection) ©2017 Siemens Protection Devices Limited Chapter 5 Page 29 of 32...

  • Page 282: Ethernet Network Redundancy Iec 61850

    RSTP need to be enabled on the device within Reydisp Manager (See Reydisp Manager user guide). Network rings with up to 30 devices is possible. Figure: 6.3-1 RSTP Ethernet Network Ring Configuration Chapter 5 Page 30 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 283: Prp - Parallel Redundancy Protocol

    No reconfiguration time is necessary for the network, as is the case for RSTP. PRP need to be enabled on the device within Reydisp Manager (See Reydisp Manager user guide). Figure: 6.3-2 PRP Ethernet Network Configuration ©2017 Siemens Protection Devices Limited Chapter 5 Page 31 of 32...

  • Page 284: Hsr - High Availability Seamless Redundancy Protocol

    HSR needs to be enabled on the device within Reydisp Manager (See Reydisp Manager user guide). Network rings with up to 50 devices is possible. Figure: 6.3-3 HSR Ethernet Network Ring Configuration Chapter 5 Page 32 of 32 ©2017 Siemens Protection Devices Limited...

  • Page 285: The Copyright And Other Intellectual Property Rights In This Document, And In Any Model Or Article Produced From It (And Including

    Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 286 7SR11 & 7SR12 Commissioning and Maintenance Guide ©2017 Siemens Protection Devices Limited Chapter 6 Page 2 of 72...
  • Page 287 2.14.5 Neutral Overvoltage (59N) ...................... 50 2.14.6 Definite Time (59NDT) ......................50 2.14.7 Inverse Time (59NIT) ......................50 2.15 Under/Over Frequency (81) ........................52 2.16 Power (32) ............................54 ©2017 Siemens Protection Devices Limited Chapter 6 Page 3 of 72...
  • Page 288 4.1 Autoreclose (79) ............................ 70 4.2 Quick Logic ............................70 Section 5: Testing and Maintenance ........................71 5.1 Periodic Tests ............................71 5.2 Maintenance ............................71 5.3 Troubleshooting ............................. 72 ©2017 Siemens Protection Devices Limited Chapter 6 Page 4 of 72...
  • Page 289 Figure 2-25 Current Transformer Supervision 7SR12 ................65 Figure 2-26 Broken Conductor ......................66 Figure 2-27 Trip Circuit Supervision ...................... 68 Figure 2-28 Magnetising Inrush Detector ....................69 List of Tables Table 2-1 Troubleshooting Guide....................... 72 ©2017 Siemens Protection Devices Limited Chapter 6 Page 5 of 72...

  • Page 290: Section 1: Common Functions

    The ‘Description of Operation’ section of this manual provides detailed information regarding the operation of each function of the relay. All functions are not available in all devices, please refer the ‘Description of Operation’ section to establish your function set. ©2017 Siemens Protection Devices Limited Chapter 6 Page 6 of 72...

  • Page 291: Test Equipment

    The ‘Active Settings Group’ and the ‘Edit Settings Group’ are selected in the ‘System Configuration Menu’. ©2017 Siemens Protection Devices Limited Chapter 6 Page 7 of 72...

  • Page 292: Tests

    Automated setting comparison can be carried out by Reydisp using the Compare Settings Groups function in the Edit menu. Any modified settings will be clearly highlighted. ©2017 Siemens Protection Devices Limited Chapter 6 Page 8 of 72...

  • Page 293: Ac Analogue Energising Quantities

    Note. The time measured will include an additional delay, typically less than 20ms, due to the response time of the binary input hardware, software processing time and the operate time of the output relay. Tested Measured Measured Notes (method of initiation) Delay Delay ©2017 Siemens Protection Devices Limited Chapter 6 Page 9 of 72...

  • Page 294: Binary Outputs

    CT Shorting contacts checked Binary Output 1 terminals 1 & 2 Alarm Checked Binary Output 2 terminals 5 & 6 Alarm Checked ©2017 Siemens Protection Devices Limited Chapter 6 Page 10 of 72...

  • Page 295: Section 2: Protection Functions

    3 phase nominal rated voltage to the VT inputs during testing to avoid inadvertent operation of other functions. Particular care should be taken when testing overcurrent functions that the thermal rating of the current inputs is not exceeded. ©2017 Siemens Protection Devices Limited Chapter 6 Page 11 of 72...

  • Page 296: Phase Directional Polarity Check

    (lag) direction. The recorded angle should be the angle at which the phase current leads the phase-phase polarising voltage. This measurement is greatly simplified if the ©2017 Siemens Protection Devices Limited Chapter 6 Page 12 of 72...

  • Page 297: Out Of 3 Logic

    Repeat the test with Phase A current as above but also with equal current in the B phase at 180º to that in the A phase. 1 phase current 2 phase current No 50/51-n Operation 50/51-n operation ©2017 Siemens Protection Devices Limited Chapter 6 Page 13 of 72...

  • Page 298: Phase Overcurrent (67/50,67/51)

    Apply 2x setting current if possible and record operating time Phase Dir. P.U. Current Operate Time (Amps) (sec) Amps 2 x Is Check correct indication, trip output, alarm contacts, waveform record. ©2017 Siemens Protection Devices Limited Chapter 6 Page 14 of 72...

  • Page 299: Inverse Time Overcurrent (51)

    (51-n only) and Voltage Controlled Overcurrent and can be made non-directional by VT Supervision. This functionality should be checked. Element BI Inhibits VTS action Inrush Detector 79 Autoreclose 51-1 51-2 51-3 51-4 50-1 50-2 50-3 50-4 ©2017 Siemens Protection Devices Limited Chapter 6 Page 15 of 72...
  • Page 300 Repeat the test with the reset time (b) reduced to 50% of the previous value. Ensure that the second operate time (c) is 50% of the first (a) operate time. Check correct indication, trip output, alarm contacts, waveform record. ©2017 Siemens Protection Devices Limited Chapter 6 Page 16 of 72...

  • Page 301: Voltage Controlled Overcurrent (51V)

    Voltage setting. If the 51V-n current setting is above the continuous rating of the relay an alternative procedure should be used, apply test current in short duration shots with applied voltage being gradually reduced for each subsequent shot ©2017 Siemens Protection Devices Limited Chapter 6 Page 17 of 72...
  • Page 302 Increase 3P current until the element operates at its full setting, i.e. 51V settings are not used. Element VTS action 51-1 51-2 51-3 51-4 Check correct indication, trip output, alarm contacts. ©2017 Siemens Protection Devices Limited Chapter 6 Page 18 of 72...

  • Page 303: Cold Load (51C)

    Current Level for more than the Reduced Current Time during testing. It may be convenient to set the Reduced Current setting to Disabled for the duration of the test. The Cold Load Active output is provided and can be used as an indication during testing. ©2017 Siemens Protection Devices Limited Chapter 6 Page 19 of 72...

  • Page 304: Inverse Time Overcurrent (51C)

    Compare to calculated values for operating times Char. Operate Current Operate Time (NI EI VI LTI, P.U. D.O. 2 x Is 5 x Is DTL) (Amps) (Amps) (sec) (sec) P.U. D.O. & TIMING TESTS ©2017 Siemens Protection Devices Limited Chapter 6 Page 20 of 72...
  • Page 305 Repeat the test with the reset time (b) reduced to 50% of the previous value. Ensure that the second operate time (c) is 50% of the first (a) operate time. ©2017 Siemens Protection Devices Limited Chapter 6 Page 21 of 72...
  • Page 306 (calculated) First test (c) Second Test (c) 2.4.1.3 Element Blocking The 51c Overcurrent elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits ©2017 Siemens Protection Devices Limited Chapter 6 Page 22 of 72...

  • Page 307: Arc Flash Detection (50Afd)

    Note that mobile phone or small compact camera flashes may not have sufficient power to cause sensor operation but may be suitable if held directly against the sensor. Check correct indication, trip output, alarm contacts, waveform record. ©2017 Siemens Protection Devices Limited Chapter 6 Page 23 of 72...

  • Page 308: Directional Earth Fault Polarity Check (67N)

    Alternatively, Verify correct directional indication at points a, +150 b, c and d (C.A +75 , +95 , -75 , -95 Figure 2-7 Directional Earth Fault Boundary System Angles ©2017 Siemens Protection Devices Limited Chapter 6 Page 24 of 72...

  • Page 309: Derived Earth Fault (67/50N, 67/51N)

    I Input. If any of these elements are defined as directional the correct voltage phase direction will be required to produce an operation of those elements. ©2017 Siemens Protection Devices Limited Chapter 6 Page 25 of 72...

  • Page 310: Directional Polarity

    Compare to calculated values for operating times. P.U. Char. Operate Current Operate Time D.O. (NI EI VI LTI, P.U. D.O. 2 x Is 5 x Is & DTL) (Amps) (Amps) (sec) (sec) TIMING TESTS ©2017 Siemens Protection Devices Limited Chapter 6 Page 26 of 72...
  • Page 311 The Characteristic can be made non-directional by VT Supervision. This functionality should be checked. Element BI Inhibits VTS action Inrush Detector 51N-1 51N-2 51N-3 51N-4 50N-1 50N-2 50N-3 50N-4 ©2017 Siemens Protection Devices Limited Chapter 6 Page 27 of 72...
  • Page 312 (c) is 50% of the first (a) operate time. Operate Reset time Operate time 50% Reset 50% operate 50% operate time time (calculated) (measured) Time time (measured) (expected) (calculated) (calculated) First test (c) Second Test (c) ©2017 Siemens Protection Devices Limited Chapter 6 Page 28 of 72...

  • Page 313: Measured Earth Fault (67/50G,67/51G)

    I input circuit only. If any of these elements are defined as directional the correct voltage phase direction will be required to produce an operation of those elements. ©2017 Siemens Protection Devices Limited Chapter 6 Page 29 of 72...

  • Page 314: Directional Polarity

    Compare to calculated values for operating times P.U. Char. Operate Current Operate Time D.O. (NI EI VI LTI, P.U. D.O. 2 x Is 5 x Is & DTL) (Amps) (Amps) (sec) (sec) TIMING TESTS ©2017 Siemens Protection Devices Limited Chapter 6 Page 30 of 72...
  • Page 315 The Characteristic can be made non-directional by VT Supervision. This functionality should be checked. Element BI Inhibits VTS action Inrush Detector 51G-1 51G-2 51G-3 51G-4 50G-1 50G-2 50G-3 50G-4 ©2017 Siemens Protection Devices Limited Chapter 6 Page 31 of 72...
  • Page 316 (c) is 50% of the first (a) operate time. Operate Reset time Operate time 50% Reset 50% operate 50% operate time time (calculated) (measured) Time time (measured) (expected) (calculated) (calculated) First test (c) Second Test (c) ©2017 Siemens Protection Devices Limited Chapter 6 Page 32 of 72...

  • Page 317: Sensitive Earth Fault (67/50S,67/51S)

    If 67SEF Wattmetric is set to Enabled, the residual real power must also exceed the 67SEF Wattmetric Power setting to permit SEF operation. As the directional boundary is approached, the Wattmetric current, will by ©2017 Siemens Protection Devices Limited Chapter 6 Page 33 of 72...

  • Page 318: (50Sef)

    In this way, the wattmetric power is equal to the product of the applied current and applied voltage and can be adjusted by adjustment of the voltage magnitude. Wattmetric Power Current Operate Voltage Calculated Po Setting Applied Io x Vo ©2017 Siemens Protection Devices Limited Chapter 6 Page 34 of 72...

  • Page 319: Inverse Time Overcurrent (51Sef)

    The Sensitive Earth Fault elements can be blocked by Binary Input Inhibit, VT Supervision and Wattmetric protection. The Characteristic can be made non-directional by VT Supervision. This functionality should be checked. Element BI Inhibits VTS action 51SEF-1 51SEF-2 51SEF-3 51SEF-4 50SEF-1 50SEF-2 ©2017 Siemens Protection Devices Limited Chapter 6 Page 35 of 72...
  • Page 320 (c) is 50% of the first (a) operate time. Operate Reset time Operate time 50% Reset 50% operate 50% operate time (calculated) (measured) (measured) time Time time (expected) (calculated) (calculated) First test (c) Second Test (c) ©2017 Siemens Protection Devices Limited Chapter 6 Page 36 of 72...

  • Page 321: Restricted Earth Fault (64H)

    The relay should be disconnected from the current transformers for this test. Apply 2x setting current if possible and record operating time Phase P.U. Current Tolerance Operate Time Tolerance (Amps) (sec) Amps 2 x Is ©2017 Siemens Protection Devices Limited Chapter 6 Page 37 of 72...
  • Page 322 The Restricted Earth Fault element can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits Check correct indication, trip output, alarm contacts, waveform record. Check that any shorting links are removed after testing. ©2017 Siemens Protection Devices Limited Chapter 6 Page 38 of 72...

  • Page 323: Negative Phase Sequence Overcurrent (46Nps)

    If Phase Rotation ACB is selected in the CT/VT Config menu, the expected PPS and NPD are exchanged and the output from a standard positive sequence test set will be considered as NPS. ©2017 Siemens Protection Devices Limited Chapter 6 Page 39 of 72...

  • Page 324: Definite Time Nps Overcurrent (46Dt)

    7.03 1.31 ANSI-EI 9.52 1.30 Note that the operate time may be subject to the Minimum op time setting for the element and/or may have a Follower DTL applied. ©2017 Siemens Protection Devices Limited Chapter 6 Page 40 of 72...
  • Page 325 The NPS Overcurrent elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 46IT 46DT Check correct indication, trip output, alarm contacts, waveform record. When testing is complete reinstate any of the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 41 of 72...

  • Page 326: Undercurrent (37)

    If DTL is large apply 1.1x setting, check for no operation, apply 0.9x setting, check operation Testing of this element phase by phase may cause inadvertent operation of the 46 NPS Overcurrent elements. Apply 0.5x setting current and record operating time ©2017 Siemens Protection Devices Limited Chapter 6 Page 42 of 72...
  • Page 327 The elements can be blocked by undercurrent guard function. This functionality should be checked. Element Guard Setting Blocked 37-1 37-2 Check correct phase indication, trip output, alarm contacts, waveform record. ©2017 Siemens Protection Devices Limited Chapter 6 Page 43 of 72...

  • Page 328: Thermal Overload (49)

    The following table lists operate times for a range of Time Constant Settings for an applied current of 2x the Thermal Overload setting. Ensure that the thermal rating of the relay is not exceeded during this test. ©2017 Siemens Protection Devices Limited Chapter 6 Page 44 of 72...
  • Page 329 Capacity Alarm Setting Measured 2.13.1.1 Element Blocking The Thermal element can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits ©2017 Siemens Protection Devices Limited Chapter 6 Page 45 of 72...

  • Page 330: Over/Under Voltage

    The test set should be stopped at the operate time setting +/-5% Test inputs VL2 and VL3 by repeating the above if necessary. When testing is complete reinstate any of the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 46 of 72...
  • Page 331 The Under/Over Voltage elements can be blocked by Binary Input Inhibit and VT Supervision. This functionality should be checked. Element BI Inhibits VT Supervision 27/59-1 27/59-2 27/59-3 27/59-4 When testing is complete reinstate any of the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 47 of 72...

  • Page 332: Undervoltage Guard (27/59Uvg)

    NPS Overvoltage Voltage Inputs: ), V ), V Current Inputs: n/a apply zero current to stabilize other functions Disable: 27/59, 59N, 60VTS Map Pickup LED: 47-n - Self Reset ©2017 Siemens Protection Devices Limited Chapter 6 Page 48 of 72...

  • Page 333: Undervoltage Guard (47 U/V Guard)

    47 NPS voltage element resets, this can be detected by the General Pickup LED reset if no other element is operated (this includes any Undervoltage element which is not UV Guarded). Phase Setting Tolerance V element Blocked NOTES (Volts) Used for test Volts ©2017 Siemens Protection Devices Limited Chapter 6 Page 49 of 72...

  • Page 334: Neutral Overvoltage (59N)

    It will be advantageous to map the function being tested to temporarily drive the relevant Pickup output in the Pickup Config sub-menu in the Output Config menu as this will allow the Pick-up led to operate for the function. ©2017 Siemens Protection Devices Limited Chapter 6 Page 50 of 72...
  • Page 335 The Neutral Overvoltage elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 59NIT 59NDT Check correct indication, trip output, alarm contacts, waveform record. When testing is complete reinstate any of the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 51 of 72...

  • Page 336: Under/Over Frequency (81)

    Starting with the element in the operated condition, gradually increase or decrease the applied voltage until the element resets. Measure the reset voltage level to check the 81 Hysteresis setting. ©2017 Siemens Protection Devices Limited Chapter 6 Page 52 of 72...
  • Page 337 The U/O Frequency elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 81-1 81-2 81-3 81-4 81-5 81-6 Check correct indication, trip output, alarm contacts, waveform record. When testing is complete reinstate any of the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 53 of 72...

  • Page 338: Power (32)

    If the element is set as 32-n U/C Guarded, The applied current must be above the 32 U/C Guard Setting. Apply setting power +10% for Over-power or -10% for Under-power and record operating time. ©2017 Siemens Protection Devices Limited Chapter 6 Page 54 of 72...
  • Page 339 The U/O Power elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 32-1 32-2 Check correct indication, trip output, alarm contacts, waveform record. When testing is complete reinstate any of the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 55 of 72...

  • Page 340: Sensitive Power (32S)

    If the element is set as 32S-n U/C Guarded, The applied current must be above the 32S U/C Guard Setting. Apply setting power +10% for Over-power or -10% for Under-power and record operating time. ©2017 Siemens Protection Devices Limited Chapter 6 Page 56 of 72...
  • Page 341 The U/O Power elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 32S-1 32S-2 Check correct indication, trip output, alarm contacts, waveform record. When testing is complete reinstate the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 57 of 72...

  • Page 342: Power Factor (55)

    55-n U/C Guard Setting at a power in the operate range. Increase the current until the relay operates. Power element Blocked Unblocked NOTES Setting Used for test Current Current (xIn) (D.O.) (P.U.) Power Factor ©2017 Siemens Protection Devices Limited Chapter 6 Page 58 of 72...
  • Page 343 The Power Factor elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 55-1 55-2 Check correct indication, trip output, alarm contacts, waveform record. When testing is complete reinstate any of the disabled functions. ©2017 Siemens Protection Devices Limited Chapter 6 Page 59 of 72...

  • Page 344: Section 3: Supervision Functions

    Repeat the sequence with current at 90% of the 50BF Setting current level after the element trip and check for no CB Fail operation. Repeat the sequence by injecting the current to I4 and using the 50BF-I4 Setting. ©2017 Siemens Protection Devices Limited Chapter 6 Page 60 of 72...

  • Page 345: Element Blocking

    No Operation □ CB Open No Operation 3.1.1 Element Blocking The CB Fail function can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 50BF ©2017 Siemens Protection Devices Limited Chapter 6 Page 61 of 72...

  • Page 346: Voltage Transformer Supervision (60Vts)

    3x the 60VTS I setting. Reduce voltage as above and check for VTS operation 60VTS I Setting Setting x 3 110% of Setting x 3 90% of Setting x 3 No VTS □ VTS operation □ ©2017 Siemens Protection Devices Limited Chapter 6 Page 62 of 72...

  • Page 347: Phase Vt Fail

    Ext_Trig 60VTS Operation □ □ Not Applicable 3.2.2.1 Element Blocking The VT Supervision can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 60VTS ©2017 Siemens Protection Devices Limited Chapter 6 Page 63 of 72...

  • Page 348: Current Transformer Supervision (60Cts)

    Apply 3Phase balanced current to the relay, reduce the current in any one or two phases to a level below 60CTS I setting. Measure the delay to operation. Gradually reduce the 3Phase current until the element resets. Setting Measured 60CTS Delay 60CTS Inps 60CTS Vnps ©2017 Siemens Protection Devices Limited Chapter 6 Page 64 of 72...

  • Page 349: 7Sr12

    60CTS Delay 60CTS Inps 60CTS Vnps 3.3.2.1 Element Blocking The CT Supervision function can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 60CTS ©2017 Siemens Protection Devices Limited Chapter 6 Page 65 of 72...

  • Page 350: Broken Conductor (46Bc)

    NPS to PPS will also increase. The levels of each sequence component current can be monitored in the Current Meters in Instruments Mode. Inject 1A of balanced current. Gradually increase imbalance current, operating level should be as follows: ©2017 Siemens Protection Devices Limited Chapter 6 Page 66 of 72...
  • Page 351 Apply 1A 1P unbalance current without 3P balanced current. Measure 46BC operating time. 46BC Delay setting Measured 3.4.1.1 Element Blocking The Broken Conductor element can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 46BC ©2017 Siemens Protection Devices Limited Chapter 6 Page 67 of 72...

  • Page 352: Trip/Close Circuit Supervision (74T/Ccs)

    The T/CCS-n Delay can be initiated by applying an inversion to the relevant status input and measured by monitoring of the alarm output. TCS-n Delay setting Measured CCS-n Delay setting Measured ©2017 Siemens Protection Devices Limited Chapter 6 Page 68 of 72...

  • Page 353: Magnetising Inrush Detector (81Hbl)

    ), I ), I Disable: Map Pickup LED: Logical operation of the harmonic blocking can be tested by current injection at 100Hz to cause operation of the blocking signals. ©2017 Siemens Protection Devices Limited Chapter 6 Page 69 of 72...

  • Page 354: Section 4: Control & Logic Functions

    The function of the Quick Logic equations should be tested conjunctively with connected plant or by simulation to assess suitability and check for correct operation on an individual basis with tests specifically devised to suit the particular application. ©2017 Siemens Protection Devices Limited Chapter 6 Page 70 of 72...

  • Page 355: Section 5: Testing And Maintenance

    Relay failure will be indicated by the ‘Protection Healthy’ LED being off or flashing. A message may also be displayed on the LCD. In the event of failure Siemens Protection Devices Ltd. (or one of its agents) should be contacted – see defect report sheet in section 5.3.

  • Page 356: Troubleshooting

    Table 2-1 Troubleshooting Guide If the above checklist does not help in correcting the problem please contact the local Siemens office or contact PTD 24hr Customer Support, Tel: +49 180 524 8437, Fax: +49 180 524 2471, e-mail: support.energy@siemens.com.

  • Page 357: The Copyright And Other Intellectual Property Rights In This Document, And In Any Model Or Article Produced From It (And Including

    Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.
  • Page 358 7SR11 & 7SR12 Applications Guide Page 2 of 48 ©2017 Siemens Protection Devices Limited...
  • Page 359 Close Circuit Supervision Connections ................... 47 5.5 Inrush Detector (81HBL2) ........................47 5.6 Broken Conductor / Load Imbalance (46BC) ..................47 5.6.1 Broken Conductor example..................... 48 5.7 Circuit-Breaker Maintenance ......................... 48 ©2017 Siemens Protection Devices Limited Chapter 7 Page 3 of 48...
  • Page 360 Determination of VT Failure (1 or 2 Phases) ..................43 Table 5-2 Determination of VT Failure (1 or 2 Phases) ..................44 Table 5-3 Determination of VT Failure (3 Phases) ................... 44 Table 5-4 Magnetic Inrush Bias ........................47 Page 4 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 361: Section 1: Common Functions

    Non essential loads tripped Relays on essential circuits switched to settings group 2 to reflect new load and fault currents RADIAL SUBSTATION Non-essential loads Figure 1.5-1 Example Use of Alternative Settings Groups ©2017 Siemens Protection Devices Limited Chapter 7 Page 5 of 48...

  • Page 362: Binary Inputs

    0ms PU and 25ms DO. Binary inputs are not rated for use on 220-250V AC. If wiring to AC operate binary inputs is required to have a total length of more than 10 metres, screened twisted pair cable should be used. Page 6 of 48 ©2017 Siemens Protection Devices Limited...
  • Page 363 2) Set quicklogic equation E1 to operate from Binary Input 1 and apply required delays: 3) Set equation E1 to operate virtual I/O V1 in the Output Matrix: 4) Set virtual I/O V1 to operate Inhibit 51-1 in the Input Matrix: ©2017 Siemens Protection Devices Limited Chapter 7 Page 7 of 48...

  • Page 364: Use Of Binary Inputs In Control And Tripping Circuits

    Where a binary input is both used to influence a control function (e.g. provide a tripping function) and it is considered to be susceptible to mal-operation the external circuitry can be modified to provide immunity to such disturbances, see figure 1.2-2. Page 8 of 48 ©2017 Siemens Protection Devices Limited...
  • Page 365 110V DC Nominal >20W (High Burden) Resistors must be wired with crimped connections as they may run hot Figure 1.2-3 Binary Input Configurations Providing Trip Relay Levels of ENA TS 48-4 ©2017 Siemens Protection Devices Limited Chapter 7 Page 9 of 48...

  • Page 366: Binary Outputs

    LED as a yellow colour, type the LED number in both red and green rows. NB: If a LED number is not assigned that particular LED will not illuminate. Figure 1.4-2 LED configuration via the Settings \ OUTPUT CONFIG \ LED CONFIG menu Page 10 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 367: Section 2: Protection Functions

    1.00 1.00 Increasing Time Multiplier 0.10 0.10 0.01 0.01 1000 1000 Current (x Is) Current (x Is) Figure 2.1-1 IEC NI Curve with Time Multiplier and Follower DTL Applied ©2017 Siemens Protection Devices Limited Chapter 7 Page 11 of 48...

  • Page 368: Selection Of Overcurrent Characteristics

    The characteristic curve shape is selected to be the same type as the other relays on the same circuit or to grade with items of plant e.g. fuses or earthing resistors. The application of IDMTL characteristic is summarised in the following table: Page 12 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 369: Reset Delay

    FAULT Clashing conductors or re-sealing cable Electro-mechanical Relay Argus (Inst. Reset) Argus (DTL Reset) TRIP TRIP Time Time Figure 2.1-3 Reset Delay ©2017 Siemens Protection Devices Limited Chapter 7 Page 13 of 48...

  • Page 370: Voltage Dependent Overcurrent (51V)

    The relay will revert to its usual settings (51-n) after elapse of the cold load period. This is determined either by a user set delay, or by the current in all 3-phases falling below a set level (usually related to normal load levels) for a user set period. Page 14 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 371: Arc Flash Detection (50Afd)

    CB A open. Arc sensor pickup can be transferred between relays using IEC 61850 GOOSE allowing Zone2 50AFD to be duplicated in all relays. Zone1 Zone2 Figure 2.4-1 Arc Flash Detection ©2017 Siemens Protection Devices Limited Chapter 7 Page 15 of 48...

  • Page 372: Instantaneous Overcurrent (50/50G/50N)

    0ms. The output is mapped to a contact. The outgoing relay blocking contacts of all circuits are wired in parallel and this wiring is also connected to a BI on the incomer relay. The BI on the incomer relay is mapped to block its 50-1 element. Page 16 of 48 ©2017 Siemens Protection Devices Limited...
  • Page 373 Instantaneous elements are also commonly applied to autoreclose schemes to grade with downstream circuit reclosers and maximise the probability of a successful auto-reclose sequence – see section 4. ©2017 Siemens Protection Devices Limited Chapter 7 Page 17 of 48...

  • Page 374: Sensitive Earth-Fault Protection (50Sef)

    It is recommended to allow for a transient factor of 2 to 3 when determining the limit of charging current. Based on the above considerations the minimum setting of a relay in a resistance earthed power system is 6 to 9 times the charging current per phase. Page 18 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 375: Directional Protection (67)

    A number of studies have been made to determine the optimum MTA settings e.g. W.K Sonnemann’s paper “A Study of Directional Element Connections for Phase Relays”. Figure 2.6-1 shows the most likely fault angle for phase faults on Overhead Line and Cable circuits. ©2017 Siemens Protection Devices Limited Chapter 7 Page 19 of 48...
  • Page 376 Note that 7SR12 relays may be programmed with forward, reverse and non-directional elements simultaneously when required by the protection scheme. Load Figure 2.7-3 Application of Directional Overcurrent Protection Page 20 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 377: Out Of 3 Logic

    OVERCURRENT> 67 2-out-of-3 Logic = ENABLED Enabling 2-out-of-3 logic will prevent operation of the directional phase fault protection for a single phase to earth fault. Dedicated earth-fault protection should therefore be used if required. ©2017 Siemens Protection Devices Limited Chapter 7 Page 21 of 48...

  • Page 378: Directional Earth-Fault (50/51G, 50/51N, 50/51Sef)

    (wattmetric) components which can be measured by the 50/51SEF elements and used to indicate fault position. Core balance CTs are recommended for this application to achieve the necessary accuracy of residual current measurement. Page 22 of 48 ©2017 Siemens Protection Devices Limited...
  • Page 379 Ø is the characteristic angle. This option is selected by setting ‘Ires Select’ to ‘Ires Real’. The characteristic angle should be set to 0º. ©2017 Siemens Protection Devices Limited Chapter 7 Page 23 of 48...
  • Page 380 (iii) Application of a Wattmetric power characteristic. The directional 50/51 SEF element operation is subject to an additional sensitive residual power element which operates only on the real (wattmetric) component of residual power. Page 24 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 381: Isolated Networks

    3 times normal phase to neutral voltage, during earth faults. The minimum polarising voltage can therefore be increased to allow very low residual current settings to be applied without risk of operation during unbalanced load conditions. ©2017 Siemens Protection Devices Limited Chapter 7 Page 25 of 48...

  • Page 382: High Impedance Restricted Earth Fault Protection (64H)

    The calculation of the value of the Stability Resistor is based on the worst case where one CT fully saturates and the other balancing CT does not saturate at all. A separate Siemens Protection Devices Limited Publication is available covering the calculation procedure for REF protection. To summarise this: The relay Stability (operating) Vs voltage is calculated using worst case lead burden to avoid relay operation for through-fault conditions where one of the CTs may be fully saturated.

  • Page 383: Negative Phase Sequence Overcurrent (46Nps)

    Their withstand is specified in two parts; continuous capability based on a figure of I , and short time capability based on a constant, K, where K = (I t. NPS overcurrent protection is therefore configured to match these two plant characteristics. ©2017 Siemens Protection Devices Limited Chapter 7 Page 27 of 48...

  • Page 384: Undercurrent (37)

    Phase Overcurrent. An Alarm is provided for θ at or above a set % of capacity to indicate that a potential trip condition exists and that the system should be scrutinised for abnormalities. Page 28 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 385: Under/Over Voltage Protection (27/59)

    DTL also prevents operation during transient disturbances. The use of IDMTL protection is not recommended because of the difficulty of choosing settings to ensure correct co-ordination and security of supply. ©2017 Siemens Protection Devices Limited Chapter 7 Page 29 of 48...

  • Page 386: Neutral Overvoltage (59N)

    ) directly from an open delta VT or from capacitor cones – see fig. 2.13-2 below. VT with Capacitor Open Delta Cone Secondary Unit Capacitor Cone Adaptor Unit Relay Relay Figure 2.14-2 NVD Protection Connections Page 30 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 387: Application With Capacitor Cone Units

    In the event of the load shedding being unsuccessful, a final stage of underfrequency protection should be provided to totally isolate all loads before plant is damaged, e.g. due to overfluxing. ©2017 Siemens Protection Devices Limited Chapter 7 Page 31 of 48...
  • Page 388 Network Incomer STAGE 1: Least important STAGE 2 Generator STAGE 3 300/5 STAGE 4 Essential Load Figure 2.16-1 Load Shedding Scheme Using Under-Frequency Elements Page 32 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 389: Power (32)

    Power factor limits can be set to provide alarms or even tripping for abnormal power factor load. Power factor can also be used to switch in and out additional plant such as capacitors ©2017 Siemens Protection Devices Limited Chapter 7 Page 33 of 48...

  • Page 390: Section 3: Ct Requirements

    Where the REF function is used then this dictates that the other protection functions are also used with class PX CTs. A full explanation of how to specify CTs for use with REF protection, and set REF relays is available on our website: www.siemens.com/energy. Page 34 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 391: Section 4: Control Functions

    If the fault is not cleared by a downstream circuit breaker, the local trip will Lockout the ARC • sequence and prevent further recloses. ©2017 Siemens Protection Devices Limited Chapter 7 Page 35 of 48...
  • Page 392 79 SEF Prot’n Trip 1 : Delayed 79 SEF Prot’n Trip 2 : Delayed 79 SEF Delayed Trips to Lockout : 3 Note that Instantaneous’ trips are inhibited if the shot is defined as ‘Delayed’ Page 36 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 393: Auto-Reclose Example 2, Simple Multishot Sequence

    79 E/F HS Trips to Lockout : 2 (must be >1 but not used due to Numshots =2) 79 E/F Delayed Trips to Lockout : 5 (must be >2 but not used due to Numshots =2) ©2017 Siemens Protection Devices Limited Chapter 7 Page 37 of 48...

  • Page 394: Auto-Reclose Example 3, Simple Single Shot Sequence

    79 SEF Prot’n Trip 2 : Delayed (not important as there are no Inst elements set) 79 E/F HS Trips to Lockout : 5 (not used) 79 E/F Delayed Trips to Lockout : 5 (not used) Page 38 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 395: Auto-Reclose Example 4 (Use Of Quicklogic With Ar)

    OUTPUT CONFIG>OUTPUT MATRIX: 51-1 = V1 OUTPUT CONFIG>OUTPUT MATRIX: 50-2 = V2 OUTPUT CONFIG>OUTPUT MATRIX: E1 = V3 CONTROL & LOGIC>QUICK LOGIC: E1 = V1.!V2 INPUT CONFIG>INPUT MATRIX: 79 Lockout = V3 ©2017 Siemens Protection Devices Limited Chapter 7 Page 39 of 48...

  • Page 396: Auto-Changeover Scheme Example

    OUTPUT CONFIG>OUTPUT MATRIX: E1 = BO3 CONTROL & LOGIC>QUICK LOGIC: E1 = I1.I2.V1 If required a time delay can be added to the output using the CONTROL & LOGIC > QUICK LOGIC: E1 Pickup Delay setting. Page 40 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 397: Section 5: Supervision Functions

    Any binary input can be mapped to this input, if it is energised when a trip initiation is received an output will be given immediately (the timers are by passed). ©2017 Siemens Protection Devices Limited Chapter 7 Page 41 of 48...
  • Page 398 Trip Operation Operation ms from occuri CB Operate Time Stage 1 CBF Timer (Retrip) = 120ms Stage 2 CBF Timer (Backtrip) = 250ms Figure 5.1-3 Two Stage Circuit Breaker Fail Timing Page 42 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 399: Current Transformer Supervision

    Operation is subject to a time delay to prevent operation for transitory effects. A 3-phase CT failure is considered so unlikely (these being independent units) that this condition is not tested for. ©2017 Siemens Protection Devices Limited Chapter 7 Page 43 of 48...

  • Page 400: Voltage Transformer Supervision (60Vts)

    For this reason, the relay allows these protection elements - under-voltage, directional over-current, etc. - to be inhibited if a VT failure occurs. Page 44 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 401: Trip/Close Circuit Supervision (74T/Ccs)

    Scheme 1 provides full Trip supervision with the circuit breaker Open or Closed. Where a ‘Hand Reset’ Trip contact is used measures must be taken to inhibit alarm indications after a CB trip. ©2017 Siemens Protection Devices Limited Chapter 7 Page 45 of 48...
  • Page 402 R = 3K3 typical BO 1 BO n Remote Alarm Figure 5.4-3 Trip Circuit Supervision Scheme 3 (H7) Scheme 3 provides full Trip supervision with the circuit breaker Open or Closed. Page 46 of 48 ©2017 Siemens Protection Devices Limited...

  • Page 403: Close Circuit Supervision Connections

    There will be little or no fault current and so overcurrent elements will not detect the condition. However the condition can be detected because there will be a high content of NPS (unbalance) current present. ©2017 Siemens Protection Devices Limited Chapter 7 Page 47 of 48...

  • Page 404: Broken Conductor Example

    Circuit-Breaker. Alarm can be provided once set levels have been exceeded. Typically estimates obtained from previous circuit-breaker maintenance schedules or manufacturers data sheets are used for setting these alarm levels. The relay instrumentation provides the current values of these counters. Page 48 of 48 ©2017 Siemens Protection Devices Limited...
  • Page 406 Siemens Protection Devices Limited P.O. Box 8, North Farm Road Hebburn, Tyne & Wear NE31 1TZ United Kingdom Phone: +44 (0)191 401 7901 Fax: +44 (0)191 401 5575 E-mail: marketing.spdl.gb@siemens.com For enquires please contact our Customer Support Center Phone: +49 180/524 8437 (24hrs)

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