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Related Manuals for Siemens Reyrolle 7PG23 5B3
Summary of Contents for Siemens Reyrolle 7PG23 5B3
- Page 1 Revision Record Preface Table of Contents Reyrolle Description of Operation Restricted Earth Fault Performance Specification Protection Applications 7PG23 5B3 Installation Commissioning Maintenance Device Manual C53000-X7040-C057-1...
- Page 2 SIPROTEC, DIGSI, SIGRA, SIGUARD, SIMEAS, SICAM, Insights Document version: C53000-X7040-C057-1.01 Hub, and OT Companion are trademarks of Siemens. Any Edition: 11.2024 unauthorized use is prohibited. Version of the product described:...
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Page 3: Revision Record
Revision Record Version Date Author/Department Approver/Department Modifications 11.2024 Modification to DIL switch resulting in change to fascia design and device setting. Updated entire document to reflect changes. 02.2010 Document formatted due to rebrand Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... - Page 4 Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
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Page 5: Preface
Preface Indication of Conformity This product is CE-compliant to relevant EU directives. Additional Support For questions about the system, contact your Siemens sales partner. Customer Support Center Our Customer Support Center provides a 24-hour service. Siemens Electrification & Automation Global Support... - Page 6 The equipment (device, module) may be used only for such applications as set out in the catalogs and the technical description, and only in combination with third-party equipment recommended and approved by Siemens. Problem-free and safe operation of the product depends on the following: •...
- Page 7 Preface Selection of Used Symbols on the Device Symbol Description Direct current, IEC 60417, 5031 Alternating current, IEC 60417, 5032 Direct and alternating current, IEC 60417, 5033 Earth (ground) terminal, IEC 60417, 5017 Protective conductor terminal, IEC 60417, 5019 Caution, risk of electric shock Caution, risk of danger, ISO 7000, 0434 Guideline 2002/96/EC for electrical and electronic devices Guideline for the Eurasian market...
- Page 8 Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
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Page 9: Table Of Contents
Table of Contents Revision Record............................3 Preface................................5 Description of Operation..........................11 Introduction........................12 Functions..........................13 Settings Overview......................14 Connection Diagram......................16 Hardware Construction..................... 17 Ordering Information......................19 Performance Specification......................... 21 Applications..............................23 Theory of High Impedance Current Balance Protective Schemes and their Application..24 Typical Applications...................... - Page 10 Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
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Page 11: Description Of Operation
Description of Operation Introduction Functions Settings Overview Connection Diagram Hardware Construction Ordering Information Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 12: Introduction
Description of Operation 1.1 Introduction Introduction Experience gained in the manufacture and application of the 2B3, 3B3, and 4B3 relays has resulted in the development of the 5B3 relay. The 5B3 relay is ideal for restricted earth fault protection of transformer windings or phase and earth fault protection of reactors and the stator windings of large machines. -
Page 13: Functions
Description of Operation 1.2 Functions Functions The relay operating element is a type B61 DC attracted armature element energised via a low pass filter circuit and a full wave rectifier. This element is of robust construction and fitted with three heavy duty contacts and a hand reset flag indicator. -
Page 14: Settings Overview
Description of Operation 1.3 Settings Overview Settings Overview The 7PG23 5B3 relay has been modified to incorporate updated setting switches and resistor networks. It is important that the user correctly understands the way that the new setting switches work. The relay has a preset setting of 15 V and other resistors are integrated into the circuit to provide a voltage setting up to 270 V in increments by using DIL switches on the front fascia. - Page 15 Description of Operation 1.3 Settings Overview Stability [sc_7PG23_HighImpedanceScheme1, 1, --_--] Figure 1-3 High Impedance Scheme For stability the voltage setting of the relay must be made equal to or exceed the highest value of V calculated below: V = I (Rct + RL) Where: •...
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Page 16: Connection Diagram
Description of Operation 1.4 Connection Diagram Connection Diagram [lo_7PG23_ModularRelayCaseTerminalNumbers, 1, en_US] Figure 1-4 7PG23 5B3 Connection Diagram Table 1-1 Modular Relay Case Terminal Numbers 5B3 (size 3 case) Terminal Numbers Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 17: Hardware Construction
Description of Operation 1.5 Hardware Construction Hardware Construction The device is housed in a draw‑out case designed for panel mounting. The rear connection comprises of M4 screw terminals suitable for ring type crimps. [sc_7PG23_FrontnBack, 1, --_--] Figure 1-5 Size E3 The chassis of the device can be withdrawn from the case by pulling the handles on the top and bottom. - Page 18 Description of Operation 1.5 Hardware Construction Earthing Terminal The case earth stud should be solidly earthed to the panel earth before any connections to the device rear terminal. Located at the top rear of the case is a case earth stud as shown in Figure 1-7, this must be connected to the main panel earth.
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Page 19: Ordering Information
Description of Operation 1.6 Ordering Information Ordering Information Product Description Order No. 9 10 11 12 13 14 15 16 □ □ □ □ □ □ □ □ □ Single element high impedance relay, ideal for REF applica- tions. Relay Type 5B3 - High impedance, 50 Hz 5B3 - High impedance, 60 Hz Type of Flag... - Page 20 Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
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Page 21: Performance Specification
Performance Specification General Performance Data to IEC 60255 Characteristic Energizing Quantity AC voltage V 15 V to 270 V AC current I 20 mA fixed Frequency 50 Hz/ 60 Hz Characteristics Protection Settings Voltage V 15 V to 270 V in 5 V steps Operating Times Operating time 45 mS max. - Page 22 Performance Specification Output Contacts Indication Hand reset flag Contacts 3 normally open self reset Make and Carry: for 200 mSec 6.6 kVA with 30 A maximum Break: The contacts are intended for use in circuits where an external contact breaks the trip current, e.g. a circuit breaker auxiliary switch or trip relay cut-throat.
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Page 23: Applications
Applications Theory of High Impedance Current Balance Protective Schemes and their Application Typical Applications Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 24: Theory Of High Impedance Current Balance Protective Schemes And Their Application
Applications 3.1 Theory of High Impedance Current Balance Protective Schemes and their Application Theory of High Impedance Current Balance Protective Schemes and their Application Determination of Stability The stability of a current balance scheme using a high impedance relay circuit is based on the fact that for a given through fault condition, the maximum voltage that can occur across the relay circuit is determined by means of a simple calculation. - Page 25 Applications 3.1 Theory of High Impedance Current Balance Protective Schemes and their Application Primary fault setting = N (I + I1 + I2 + I3) where, • I = the relay operating current • I1, I2, I3 = the excitation currents of the CTs at the relay setting voltage •...
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Page 26: Typical Applications
Applications 3.2 Typical Applications Typical Applications Generators and Synchronous Motors • The circuit for phase to phase and phase to earth fault protection is shown in Figure 3-2. It requires two CTs and a single pole relay per phase. If the generator is earthed through a relatively high value earthing resistor, it may be necessary to supplement the high impedance protection by a sensitive earth fault protection. - Page 27 Applications 3.2 Typical Applications [sc_Basic_Circuit_of_High-Impedance_Current-Balance_Scheme, 1, --_--] Figure 3-1 Basic Circuit of High-Impedance Current-Balance Scheme [sc_Phase/Phase_&_Phase/Earth_Fault_Protection_for_Generator_AC_Windings_Synchronous-Motor_AC_Windings_&_Series_Reactors, 1, --_--] Figure 3-2 Phase/Phase and Phase/Earth Fault Protection for Generator AC Windings, Synchronous-Motor AC Windings, and Series Reactors [sc_Phase_to_Earth_Fault_Protection_for_Generator_AC_Windings_Synchronous-Motor_AC_Windings_and_Shunt_Reactors, 1, --_--] Figure 3-3 Phase to Earth Fault Protection for Generator AC Windings, Synchronous-Motor AC Windings, and Shunt Reactors Reyrolle, Restricted Earth Fault Protection, Device Manual...
- Page 28 Applications 3.2 Typical Applications [sc_Phase/Phase_&_Phase/Earth_Fault_Protection_for_Auto-Transformers, 1, --_--] Figure 3-4 Phase/Phase and Phase/Earth Fault Protection for Auto-Transformers [sc_Restricted_Earth-Fault_Protection_for_Transformers_Windings, 1, --_--] Figure 3-5 Restricted Earth-Fault Protection for Transformers Windings Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
- Page 29 Applications 3.2 Typical Applications [sc_Phase/Phase_and_Phase/Earth_Fault_Protection, 1, --_--] Figure 3-6 Phase/Phase and Phase/Earth Fault Protection [sc_Phase/Earth_Fault_Protection, 1, --_--] Figure 3-7 Phase/Earth Fault Protection Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
- Page 30 Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
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Page 31: Installation
Return devices to the manufacturer, stating the defect. • Use the original packaging or transport packaging where possible. • Send damaged devices to the following address: Siemens AG SI EA O PA Repair/Return Rohrdamm 7 13629 Berlin Germany Reyrolle, Restricted Earth Fault Protection, Device Manual... - Page 32 The relative humidity must be at a level where condensed water and ice are prevented from forming. • Siemens recommends that you observe a restricted storage temperature range of +10 °C to +35 °C, in order to prevent the electrolytic capacitors used in the power supply from ageing prematurely.
- Page 33 Installation [Reyrolle Product Catalogue, 7PG17 E3, 1, --_--] Figure 4-1 E3 Case Environmental Protection Hints Disposal of Old Equipment and Batteries (Applicable only for European Union and Countries with a Recycling System) The disposal of our products and possible recycling of their components after decommissioning has to be carried out by an accredited recycling company, or the products/components must be taken to applicable collection points.
- Page 34 When disposing of or transferring a mobile storage device, Siemens strongly recommends physically destroying it or completely deleting data from the mobile storage device by using a commercially available computer data erasing software.
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Page 35: Commissioning
Commissioning Required Test Equipment Precautions Programme of Tests Testing of Current Transformers Mounted in Power Transformer Bushings General Check of Connections Insulation Resistance Tests Pilot Resistance Tests Current Transformer Ratio and Polarity Tests Fault Setting Tests by Primary Injection 5.10 Tests Using Load Current 5.11 Fault Setting Tests by Secondary Injection... -
Page 36: Required Test Equipment
Commissioning 5.1 Required Test Equipment Required Test Equipment • A 1000 V insulation resistance test set • A heavy current primary injection test transformer capable of providing 500 A and an output of at least 5 • A variable ratio transformer suitable for controlling the input to the primary injection test transformer •... -
Page 37: Precautions
Commissioning 5.2 Precautions Precautions Before testing commences the equipment should be isolated from the current transformers and the CT's short circuited in line with local site procedures. During secondary injection tests, take care that the test circuit is earthed at one point only. Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 38: Programme Of Tests
Commissioning 5.3 Programme of Tests Programme of Tests • General checks of connections • Insulation resistance tests • Pilot resistance tests • Current transformer ratio and polarity tests • Fault setting tests by primary injection • Tests using load current •... -
Page 39: Testing Of Current Transformers Mounted In Power Transformer Bushings
Commissioning 5.4 Testing of Current Transformers Mounted in Power Transformer Bushings Testing of Current Transformers Mounted in Power Transformer Bushings If the CTs associated with the earth fault protection are located in the power transformer bushings, it may not be possible to apply test connections between the CTs and the power transformer windings. If this is so, apply the test connections on another winding in order to short circuit the power transformer when making the primary injection tests. -
Page 40: General Check Of Connections
Commissioning 5.5 General Check of Connections General Check of Connections Isolate the auxiliary supplies. Check that the wiring is complete and that the connections are tight. Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 41: Insulation Resistance Tests
Commissioning 5.6 Insulation Resistance Tests Insulation Resistance Tests Isolate the auxiliary supplies. Remove the earth connections. Measure the insulation resistance at those points which will ensure that all the wiring, including the trip circuits and relays, is tested. Insulation resistance values which may be considered satisfactory depend on the amount of wiring involved. -
Page 42: Pilot Resistance Tests
Commissioning 5.7 Pilot Resistance Tests Pilot Resistance Tests Isolate the auxiliary supplies. Using the test circuit shown in Figure 5-1 measure the resistance of the pilots between the relay tapping point and the CTs. These values should not exceed those values employed in the setting calculations. -
Page 43: Current Transformer Ratio And Polarity Tests
Commissioning 5.8 Current Transformer Ratio and Polarity Tests Current Transformer Ratio and Polarity Tests If the protection does not include a neutral CT, ratio and polarity tests may be made with load current as described under "Tests Using Load Current". If the protection includes more than one set of line CTs or more than one neutral CT, ensure that the polarities of all CTs are checked relative to each other. -
Page 44: Fault Setting Tests By Primary Injection
Commissioning 5.9 Fault Setting Tests by Primary Injection Fault Setting Tests by Primary Injection Isolate the auxiliary supplies. Adjust the relay and the relay setting resistors to the recommended values given in the setting calculations. Using the test circuit shown in Figure 5-4 pass a current through one CT primary and increasing the current gradually, note the value at which the relay operates. -
Page 45: Tests Using Load Current
Commissioning 5.10 Tests Using Load Current 5.10 Tests Using Load Current If it is not practical to perform the ratio and polarity tests by primary current injection as described previously, the ratio and polarity tests of the line CTs and a check of relay operation can be made using load current. The test is applicable to earth fault protection which does not include neutral CTs. -
Page 46: Fault Setting Tests By Secondary Injection
Commissioning 5.11 Fault Setting Tests by Secondary Injection 5.11 Fault Setting Tests by Secondary Injection Isolate the auxiliary supplies. Using the test circuit shown in Figure 5-5 inject a current and, increasing it gradually, note the value at which operation occurs. This should be equal to: Primary fault setting / CT ratio. Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 47: Tripping Tests And Intertripping Tests On Circuit Breakers And Operation Tests On Indicating Devices
Commissioning 5.12 Tripping Tests and Intertripping Tests on Circuit Breakers and Operation Tests on Indicating Devices 5.12 Tripping Tests and Intertripping Tests on Circuit Breakers and Operation Tests on Indicating Devices Check that the auxiliary supplies are connected. Operate the relay with earth fault protection function and check that the circuit breakers operate only when the appropriate resistors are selected and that the indicators operate correctly. -
Page 48: Check Of Attracted Armature Element
Commissioning 5.13 Check of Attracted Armature Element 5.13 Check of Attracted Armature Element To enable the attracted armature element to be checked and tested the following is required: • 0.15 mm (0.006") shim, 0.4 mm (0.016") shim, 1.0 mm (0.039") shim or rod, 1.65 mm (0.065") shim or rod, 2.4 mm (0.095") shim or rod •... - Page 49 Commissioning 5.13 Check of Attracted Armature Element Recommendations for Re-setting If the relay does not comply with above then the following points should be checked and the relay adjusted as necessary. Armature The end plate on the armature is controlled by the armature keep. Adjustment is made by slacking the keep fixing screw and slightly moving the keep horizontally forward or backward.
- Page 50 Commissioning 5.13 Check of Attracted Armature Element [sc_Pilot-Resistance_Test-Circuit, 1, --_--] Figure 5-1 Pilot-Resistance Test-Circuit [sc_Current_Transformer_Ratio_Test-Circuit, 1, --_--] Figure 5-2 Current-Transformer Ratio Test-Circuit Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
- Page 51 Commissioning 5.13 Check of Attracted Armature Element [sc_Current_Transformer_Polarity_Test-Circuit, 1, --_--] Figure 5-3 Current-Transformer Polarity Test-Circuit [sc_Circuit_for_Fault_Setting_Test_by_Primary_Injection, 1, --_--] Figure 5-4 Circuit for Fault Setting Test by Primary Injection Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
- Page 52 Commissioning 5.13 Check of Attracted Armature Element [sc_Circuit_for_Fault_Setting_Test_by_Secondary_Injection, 1, --_--] Figure 5-5 Circuit for Fault Setting Test by Secondary Injection [sc_Type_B61_Contact_Stack_as_used_on_5B3_Relay, 1, --_--] Figure 5-6 Type B61 Contact Stack as used on 5B3 Relay [sc_Checking_Remaining_Armature_Travel_at_Contact_Touch, 1, --_--] Figure 5-7 Checking Remaining Armature Travel at Contact Touch Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
- Page 53 Commissioning 5.13 Check of Attracted Armature Element [sc_Armature_Gap_Setting, 1, --_--] Figure 5-8 Armature Gap Setting [sc_Residual_Gap_Setting, 1, --_--] Figure 5-9 Residual Gap Setting [sc_Setting_of_Contact_Control_Force, 1, --_--] Figure 5-10 Setting of Contact Control Force Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
- Page 54 Commissioning 5.13 Check of Attracted Armature Element [sc_Flag_Mechanism, 1, --_--] Figure 5-11 Flag Mechanism Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
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Page 55: Maintenance
Maintenance Mechanical Inspection Test Intervals Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 56: Mechanical Inspection
Maintenance 6.1 Mechanical Inspection Mechanical Inspection Inspect the relay for dust, and dirty or damaged contacts. Use a blower to remove dust, and if necessary clean the contacts using a stiff brush dipped in a suitable substance. Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024... -
Page 57: Test Intervals
Maintenance 6.2 Test Intervals Test Intervals The maintenance tests required will largely depend upon experience and site conditions, but as a general rule it is recommended that the following inspection and tests are performed every twelve months: • Mechanical inspection •... - Page 58 Reyrolle, Restricted Earth Fault Protection, Device Manual C53000-X7040-C057-1, Edition 11.2024...
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