Siemens SENTRON 3WA1

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Inspection and maintenance

5.7 Maintaining the main contacts

3WA1 air circuit breaker

412 Equipment Manual, 02/2023, 92310000002-06

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Table of Contents5
Introduction19
Scope of Validity of this Document19
Target Readers of this Documentation19
Technical Support19
Reference Documents20
Advanced Training Courses20
Safety Instructions21
Security Information22
Open Source Software22
More Information on Open Source Software for 3WA Circuit Breakers23
Standards24
Abbreviations24
Description25
Overview - Applications and Portfolio25
Properties25
Portfolio of the 3WA1 Circuit Breaker27
Advantages28
Circuit Breakers and Non-Automatic Circuit Breakers29
Distinction between Circuit Breakers and Non-Automatic Circuit Breakers29
Design30
Circuit Breakers30
Guide Frame31
Secondary Disconnect Terminals36
Circuit Breaker Identification38
Rating und Accessory Labels of Circuit Breaker38
Guide Frame Rating Label40
Operation41
Charging the Stored-Energy Spring41
Closing and Opening42
Racking the Circuit Breaker in the Guide Frame44
Commissioning Checklist45
Protection System47
General Description of Function47
Option Plug48
Guideline for Setting the Protection Parameters50
Time-Current Characteristic50
Description of the Protective Functions52
General Description52
Long Time LT52
Short Time ST56
Instantaneous Short-Circuit Protection INST57
Neutral Protection N58
Ground-Fault Alarm59
Ground-Fault Protection GF60
Ground-Fault Protection GF Hi-Z63
Directional Short Time Dst66
Reverse Power Protection RP68
Enhanced Protective Functions EPF69
Tolerances for Protection Functions70
DAS+ Maintenance Mode74
Activation Limits and Power Supply78
ETU300 Electronic Trip Unit79
Overview of Variants79
Operator Controls and Displays80
Overview80
Operating Keys81
LED Displays81
Rotary Coding Switches83
Interfaces83
Interface for External Voltage Supply Via the TD40083
Digital Input and Output84
External Current Sensor85
Rear Interfaces86
Protection Parameters86
Introduction86
Setting Range87
Parameter DAS+ Maintenance Mode88
DAS+ Maintenance Mode88
Electronic Trip Unit ETU60089
Overview of Variants89
Operator Controls, Displays and Voltage Tap Module90
Overview90
Display and Operating Keys F1 to F491
LED Displays91
Rotary Switch93
Voltage Tap Module93
Display and Menu Structure95
Operating Philosophy95
Menu Structure97
Start Screen98
Display after a Trip101
Display in Case of a Warning103
Display of an Error Message104
Interfaces105
Bluetooth and USB-C Interface105
Digital Input and Output109
Digital Output for Ground-Fault Alarm REF111
External Current Sensors112
Battery113
Rear Interfaces114
Protection Parameters115
Introduction115
Parameter Set a115
Parameter Set B (Optional)116
Setting Range for Parameter Sets a and B116
Enhanced Protective Functions EPF120
Parameter DAS+ Maintenance Mode122
Zone-Selective Interlocking ZSI Parameters122
DAS+ Maintenance Mode123
Technical Specifications125
ETU600 Commissioning125
Grid Parameters126
Wiring Configuration127
Metering127
Local Interfaces128
Display128
Digital Input128
Digital Output128
Module Monitoring129
Remote Access Protection129
System Time129
Function Packages130
General130
Ground-Fault Alarm130
Directional Protective Functions130
Enhanced Protective Functions131
Second Set of Protection Parameters131
Metering Values131
Metering Function (Power Metering Function)132
Communication and System Connection140
Cubiclebus²140
The Bus System140
Technical Specifications142
Selecting the Power Supply142
Firmware Update143
COM190 and COM150 Communication Modules146
Overview146
COM190 Communication Module147
COM150 Communication Module152
Common Functions and Connections156
Commissioning161
Access Protection Functions165
Resetting to Factory Settings169
System Time171
Status Acquisition with Breaker Status Sensor BSS200173
Self-Monitoring and Diagnostics175
Internal Self-Test175
General175
Internal Self-Test ETU300175
Internal Self-Test ETU600176
Software-Assisted Testing178
Circuit Breaker Operating Principle178
Test Functions179
SENTRON Powerconfig Configuration Software183
Display of Errors and Alarms183
Trip Log187
Zone-Selective Interlocking ZSI189
Advantage189
Structure and Principle of Operation of the ZSI System189
Monitoring and ZSI Test Function191
Parameterization191
Compatibility192
Application Examples193
Example: Radial System with Three Grading Levels193
Example of Multiple Infeed with Coupler Circuit Breaker196
Example of Branch Circuit with Fuse197
Example of Integrating the Medium-Voltage Protection Relay200
Applications201
Use in Systems with Isolated Transformer Neutral Point (IT Systems)201
General201
Selection Criteria202
Fault Situation203
Using the 3WA Circuit Breaker for Motor Protection204
Transfer Control208
General208
Transfer Control with Two 3WA Circuit Breakers209
Transfer Control with Three 3WA Circuit Breakers209
Further Information209
Applications with Closing Coil and Shunt Trip210
Overview210
Connecting the Closing Coil212
Connection of the First Shunt Trip213
Connection of the Second Shunt Trip214
Electrical Interlocks for Switching Via Communication214
Electrical Closing Interlock217
DSP800 Display218
Powermanager221
Energy Management in Accordance with ISO 50001221
Features222
Functions223
TÜV Certificate of Conformity for Energy Management223
7KN Powercenter 3000224
Iot Gateway for the Intelligent Power Distribution Equipment224
Iot Data Platform225
Parameterization and Settings226
SENTRON Powermind227
Accessories229
Overview229
Preparatory and Concluding Installation Steps for the Installation of Internal Accessories231
Control and Signaling Accessories236
Closing Coil, Shunt Trip, Undervoltage Release236
Description236
Technical Specifications239
Part Number243
Capacitor Trip Device for Shunt Trips245
Description245
Technical Specifications245
Article Number245
Remote Trip Alarm Reset Coil (Incl. Automatic Reset of the Reclosing Lockout)246
Description246
Technical Specifications of the Remote Trip Alarm Reset Coil247
Article Number247
Emergency OPEN Button248
Description248
Article Number248
Digital Input/Output Modules248
Technical Specifications254
Article Number258
Spring Charging Motor259
Description259
Technical Specifications260
Article Number260
Motor Disconnect Switch261
Description261
Article Number261
Mechanical Operating Cycles Counter262
Description262
Article Number262
External Trip Controller ETC600263
Description263
Technical Specifications and Connection264
Article Number266
Second Tripping Solenoid with Reclosing Lockout267
Description267
Article Number267
Accessory Auxiliary Switches and Signaling Switches268
Overview268
Auxiliary Switches S1 to S8268
Description268
Technical Specifications269
Article Number270
Ready-To-Close Signaling Switch270
Description270
Technical Specifications271
Article Number271
Spring Charge Signaling Switch272
Description272
Technical Specifications273
Article Number273
Trip Alarm Switch274
Description274
Technical Specifications275
Part Number275
Position Signaling Switch Module for Guide Frame276
Description276
Technical Specifications280
Article Number281
Accessories for Main Connections282
Main Connections for Fixed-Mounted Circuit Breakers282
Description282
Technical Specifications287
Article Number288
Main Connections for Withdrawable Circuit Breakers290
Description290
Technical Specifications297
Part Number297
Accessories for Secondary Disconnect Terminals300
Secondary Disconnect Terminals for Fixed-Mounted Circuit Breakers300
Description300
Connection300
Part Number301
Secondary Disconnect Terminals for Withdrawable Circuit Breakers301
Description301
Connection302
Part Number302
Conversion Kit for Withdrawable Circuit Breakers and Rating Coding of the Guide Frame303
Conversion Kit for Converting Fixed-Mounted Circuit Breakers/Non-Automatic Circuit Breakers into Withdrawable Circuit Breakers303
Description303
Technical Specifications304
Part Number304
Equipment-Dependent Coding305
Description305
Article Number305
Accessories for Protection against Unauthorized Operation306
Overview of Locking Devices and Locking Provisions306
Locking Provision to Prevent Unauthorized Closing - Safe Open309
Description309
Activation310
Part Number311
Local Electric Close312
Description312
Connection313
Activation313
Part Number313
Locking Provision for Charging Handle for Padlocks314
Description314
Activation314
Article Number314
Cover for the Electronic Trip Unit315
Description315
Article Number315
Locking Provision to Prevent Unauthorized Closing of the Withdrawable Circuit Breaker316
Description316
Activation317
Part Number317
Locking Provision with Padlock for the Racking Handle of the Racking Mechanism318
Description318
Activation318
Locking Provision with Safety Lock for the Racking Handle319
Description319
Activation319
Part Number320
Shutters321
Article Number321
Locking Provision to Prevent Opening of the Control Cabinet Door When the Circuit Breaker Is Closed322
Description322
Activation / Override323
Article Number323
Locking Provision to Prevent Racking of the Withdrawable Circuit Breaker in the Disconnected Position324
Description324
Activation325
Part Number325
Locking Provision to Prevent Racking of the Withdrawable Circuit Breaker When the Control Cabinet Door Is Open326
Description326
Activation326
Article Number327
Locking Provision to Prevent Closing of the Withdrawable Circuit Breaker When the Control Cabinet Door Is Open327
Description327
Activation / Override328
Part Number328
Interlocking329
Mechanical Interlocking (Bowden Cable Interlocking)329
Description329
Part Number333
Interlocking of Two Circuit Breakers Using a Bowden Cable334
Interlocking of Three Circuit Breakers (One of Three) Using a Bowden Cable335
Interlocking of Three Circuit Breakers Using a Bowden Cable336
Interlocking of Three Circuit Breakers, Two of Which Are Interlocked, Using a Bowden Cable337
Interlocking of Three Circuit Breakers Using a Bowden Cable338
Interlock for Mechanical Close/Open339
Description339
Activation340
Article Number340
Interlock System to Prevent Unauthorized Closing341
Description341
Activation341
Article Number341
Accessories for Integration in the Power Distribution Equipment342
Door Sealing Frame342
Description342
Article Number342
IP55 Protective Cover343
Description343
Article Number344
Arc Chute Cover345
Description345
Article Number345
Grounding Connection between the Guide Frame and the Circuit Breaker346
Description346
Article Number347
Support Brackets348
Description348
Article Number348
Accessories for the ETU300 and ETU600 Electronic Trip Units349
Option Plug349
Description349
Article Number350
External Current Sensor for Neutral Pole351
Description351
Technical Specifications351
Article Number352
Voltage Tap Module VTM for ETU600353
Description353
Article Number354
Adapter for the Activation of the ETU300355
Description355
Connection355
Article Number356
Internal Current Sensors Without Energy Cores357
Description357
Technical Specifications358
Connection358
Article Numbers359
Ready4Com Thanks to BSS200 Breaker Status Sensor for ETU600360
Description360
Technical Specifications361
Article Number361
ZSI200 Zone Selective Interlocking Module362
Description362
Technical Specifications363
Article Number364
Replacement Battery for ETU600365
Description365
Replacing the Battery365
Article Number365
Internal Voltage Tap on Main Current Paths366
Voltage Tap Conversion366
Description366
Article Number366
Retrofit of the Internal Voltage Tap368
Description368
Article Number369
Connection of an External Voltage Transformer370
Description370
Connection371
Article Number372
Function Packages for the ETU600 Electronic Trip Unit373
Description373
Function Packages for Protection and Alarm Functions373
Article Number374
Function Packages for Enhanced Protective Functions EPF374
Description374
Article Number375
Function Packages for Function Extensions375
Description375
Function Packages for Metering Values376
Description376
Article Number377
Communication Interface378
PROFINET Io/Modbus TCP Module COM190378
Description378
Technical Specifications379
Article Number380
Modbus RTU Module COM150381
Description381
Technical Specifications382
Article Number383
Position Signaling Switch Module for Connection to the Communication Module384
Description384
Article Number384
Cubiclebus² Terminating Resistor385
Description385
Technical Specifications385
Article Number385
Mounting Adapter for Cubiclebus² Modules386
Description386
Article Number386
Special Packaging387
Description387
Article Number387
Inspection and Maintenance389
General389
Safety Regulations391
Planning of Inspection and Maintenance392
Inspection Interval392
Scope393
Logging395
Performing Inspection396
General396
Visual Inspection396
Check of the Available Documentation and of the Rating/Accessory Label397
Testing of Mechanical Function of the Circuit Breaker397
Testing of Mechanical Function of the Withdrawable Circuit Breaker and the Guide Frame398
Testing of Auxiliary Circuits and of Cables to External Current Sensors398
Testing of Mechanical and Electrical Function of Internal Accessories399
Testing of Settings and Inspection of Electronic Trip Unit400
Inspection of the Arc Chutes, Arc Chute Cover and the Contact System400
Testing of the Function of the Cubiclebus² Modules401
Preparing for Maintenance Work402
Maintaining the Arc Chutes405
Maintaining the Main Contacts407
Introduction407
Maintaining the Main Contacts and Replacing the Contact System408
Article Number416
Decommissioning418
Technical Specifications419
Circuit Diagrams419
Secondary Disconnect Terminal Blocks X5 to X9 and Their Terminal Markings419
Terminal Connection Diagrams of Secondary Disconnect Terminal420
ETU300 Terminal Assignment Diagram420
ETU600 Terminal Assignment Diagram421
Terminal Assignment Plan Supplement for Circuit Breakers with the K60 Option (with Integrated Undervoltage Release)423
Closing Coil CC / CC-COM424
Remote Trip Alarm Reset Coil RR424
Shunt Trip ST / ST-COM / ST2424
Capacitor Trip Device for Shunt Trips425
Undervoltage Release UVR / UVR-T425
Second Tripping Solenoid F6 with Reclosing Lockout426
External Trip Controller ETC600426
Digital Input / Output Module IOM230427
Digital Input/Output Module IOM350427
Spring Charging Motor428
Motor Disconnect Switch428
Auxiliary Switch428
Ready-To-Close Signaling Switch S20429
Spring Charge Signaling Switch S21429
Trip Alarm Switches S24 and S25429
PSS and PSS COM Position Signaling Switch Modules430
Local Electric Close S10431
ZSI200 Zone Selective Interlocking Module432
COM150 Communication Module432
COM190 Communication Module433
Breaker Status Sensor BSS200433
Dimension Drawings434
3WA1 - Size 1434
Fixed-Mounted Circuit Breakers434
Withdrawable Circuit Breakers440
3WA1 - Size 2448
Fixed-Mounted Circuit Breakers448
Withdrawable Circuit Breakers455
3WA1 - Size 3465
Fixed-Mounted Circuit Breakers465
Withdrawable Circuit Breakers470
Safety Clearances477
3WA - Size 1477
3WA - Size 2479
3WA - Size 3481
Accessories and Door Cutouts483
Capacitor Storage Device483
COM190 Communication Module483
External Current Sensor for the Neutral Pole (N-CT)484
Support Brackets486
Door Cutout/Protective Cover IP55487
Door Sealing Frame488
Interlocks and Locking Provisions489
Technical Specifications of 3WA Circuit Breakers491
Basic Data for Sizes 1 to 3491
Size 1492
Basic Data492
Breaking Capacity493
Ampacity, Power Loss494
Switching Times, Endurance (Operating Cycles)494
Minimum Cross-Sections of Main Conductors496
Size 2497
Basic Data497
Breaking Capacity for AC498
Ampacity, Power Loss for AC499
Switching Times, Endurance (Operating Cycles) for AC499
Minimum Cross-Sections of Main Conductors for AC500
Breaking Capacity for DC501
Ampacity, Power Loss for DC502
Switching Times, Endurance (Operating Cycles) for DC502
Minimum Cross-Sections of Main Conductors for DC504
Size 3504
Basic Data504
Breaking Capacity505
Ampacity, Power Loss506
Switching Times, Endurance (Operating Cycles)506
Minimum Cross-Sections of Main Conductors508
Connection Options for Auxiliary Conductor Plug-In System508
Ambient Conditions509
Installation Altitudes510
Standards510
Approvals511
Failure Probability Acc. to B10 and B10D512
Electromagnetic Compatibility516
Integration in Power Distribution Equipment517
Compact Design517
Influencing Factors518
Derating in the Power Distribution Equipment519
Overview519
Derating 3WA11519
Derating 3WA12524
Derating 3WA13526
Requirement According to IEC 61439528
Standard IEC 61439528
Simplified Integration529
Structural Integration in Power Distribution Equipment529
Using 3WA Circuit Breakers in 3WL Guide Frames530
Retrofit: Simple Replaceability in Existing Power Distribution Equipment531
Checklist for Replacing 3WL with 3WA Circuit Breaker According to IEC 61439-2537
Phase Barriers and Horizontal Partitions539
Insulation Test of the Power Distribution Equipment541
Main Connection542
Troubleshooting543
Troubleshooting for Circuit Breaker543
Troubleshooting for the ETU600 Electronic Trip Unit545
8.3 Troubleshooting for COM150 / COM 190 Communications Module549
Disposal551
End of Maximum Service Life551
Disposal of Low-Voltage Circuit Breakers551
Disposal of Waste Electronic Equipment551
Appendix553
Basic Settings of the Electronic Trip Unit on Delivery553
Time-Current Characteristic of the ETU300 Electronic Trip Unit559
Time-Current Characteristic of the ETU600 Electronic Trip Unit560
ETU600 Menu Structure561
Device Numbers According to IEEE Standard C37.2564
ZSI System over Seven Grading Levels566
Overview of Possible Coding Variants567
ESD Guidelines569
Electrostatic Sensitive Devices (ESD)569
List of Abbreviations571

Siemens SENTRON 3WA1 - Page 414

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