T&R 200A-3PH mk2, Operating And Maintenance Manual

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2 OPERATION 32
2.1 Three Phase Over Current Relays 32
2.1.1 Connections 32
2.1.2 Test procedure 33
2.2 Timing of Auto-Reset/Reclosing Devices 33
2.2.1 Connections 33
2.2.2 Test procedure 34
2.3 Timing Circuit Breakers 34
2.3.1 Connections 35
2.3.2 Test procedure 35
2.3.3 Devices with short trip times 35
2.4 Directional relays (in conjunction with DVS3 mk2 voltage source) 36
2.4.1 Connections 37
2.4.2 Test procedure
– restraint angle
37
2.4.3 Test procedure
– overcurrent timing
38
3. MAINTENANCE 39
3.1 Regulator Brushes 39
3.2 Removal of the 200A-3PH mk2 from Case 39
4. STANDARD ACCESSORIES 40
4.1. Spares fuses supplied:- 40
4.2. Standard Accessories Supplied 40
4.3. Optional Accessories 40
5. OPTIONAL DELTA-STAR TRANSFORMER 41
5.1 Description 41
5.1.1 Front Panel Layout 42
5.1.2 Electrical Specification 42
5.2 Operation 44
5.2.1 Supply Voltage Connections 44
5.2.2 Connections between units 44