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Manuals
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Westinghouse Manuals
Protection Device
GFR Series
Instructions manual
Westinghouse GFR Series Instructions Manual
Ground fault protection systems with automatic test panel
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Contents
Table of Contents
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Table of Contents
Table of Contents
1 0 UL Listing
2 General Purpose
3 Description
Application Considerations
Methods of Achieving System Selectivity
Time Current Band Settings
Zone Selective Interlock
Wiring
Zone Interlocking Operation Mode
Relay Settings
Single Zone of Protection
Multiple Zones of Protection Without Zone Interlocking
With Zone Interlocking
5 Relay Type Selection
Available Relay Types
Setting Adjustments
Ground Fault Signal Memory
Time-Current Curves
Relay Selection, General
Pick-Up Range
Type of Selectivity
Typeofoperation
Relay Electrical Ratings
Control Power Required
Test Winding Power Required
Outputcontacts
Zone Interlock Contacts
Connection Diagrams
Relay Connections
Typical System Diagrams
Zone Differential GFR Operation Principles
6 Ground Fault Current Sensors
General Description
Electrical Ratings
Maximum System Voltage
Withstand
Dielectric Withstand
Maximum Error Signal
7 Ground Fault Test Panel
General Description/Purpose
Available Types
Electrical Data
Operation Sequence
Normal Operating Condition
If Ground Fault Occurs
Action Required
Test Without Service Interruption
Test with Service Interruption
Connection Diagrams
Alternate Test Diagrams
Ground Fault Warning Indicator Relay
General Purpose
Available Styles
Ground Fault Indicating Ammeter
General Purpose/Description
Performance Testing
Code Requirements
Standards Requirements
General Test Instructions
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Table of Contents
2
General Purpose
3
Description
4
Wiring
5
Application Considerations
6
If Ground Fault Occurs
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Table of Contents
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Summary of Contents for Westinghouse GFR Series
Page 1: Table Of Contents
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Page 2: General Purpose
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Page 3: Description
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Page 4: Application Considerations
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Page 5: Zone Interlocking Operation Mode
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Page 6: With Zone Interlocking
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Page 7
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Page 8: Time-Current Curves
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Page 9
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Page 10: Connection Diagrams
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Page 11: Electrical Ratings
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Page 12
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Page 13
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Page 14: Ground Fault Test Panel
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Page 16
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Page 17: Electrical Data
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Page 18
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Page 19
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Page 20: Ground Fault Warning Indicator Relay
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Page 21: Ground Fault Indicating Ammeter
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Page 22
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Page 23: Performance Testing
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Page 24
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Page 25
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Page 28
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