T&R PCU1 Series, Operating And Maintenance Manual

Page: 6 / 48

6
2.2.1 Connections 28
2.2.2 Testing 28
2.2.3 After Testing 29
2.3 Timing System 29
2.3.1 Timer Modes 30
2.3.2 General Procedure for Timing Tests 31
3 APPLICATION NOTES – TESTING SPECIFIC DEVICES 33
3.1 Secondary Injection of an Over-Current Relay (PCU1-SP only) 33
3.1.1 Timer Mode 33
3.1.2 Connections 33
3.1.3 Test Procedure 33
3.2 Primary Injection of an Over-Current Relay (PCU1-SP & LT) 34
3.2.1 Timer Mode 34
3.2.2 Connections 34
3.2.3 Test Procedure 34
3.2.4 Using Pulse Mode to Set the Current 34
3.3 Timing of Auto-reset/Reclosing Devices (PCU1-SP & LT) 35
3.3.1 Timer Mode 35
3.3.2 Connections 35
3.3.3 Test Procedure 35
3.4 Timing Devices with NO Auxiliary Contacts (PCU1-SP & LT) 36
3.4.1 Timer Mode 36
3.4.2 Connections 36
3.4.3 Test Procedure 36
3.5 Using the Control Unit as a Single Contact Timer (PCU1-SP & LT) 37
3.5.1 Timer Mode 37
3.5.2 Connections 37
3.5.3 Test Procedure 37
3.6 Using the Control Unit as a Dual Contact Timer (PCU1-SP & LT) 37
3.6.1 Timer Mode 37
3.6.2 Connections 37