GE IS200VVIBH1A IS200VVIBH1B Circuit board

Description

GE General Electric Technical Specifications: IS200VVIBH1A

IS200VVIBH1A Test Connections per Figure 17–1: RELAY TEST WIRING – WYE CONNECTION or Figure 17–2: RELAY

TEST WIRING – DELTA CONNECTION on page 17–4.

Procedure To Check:

IS200VVIBH1A Minimum Operating Voltage Supervision:

1. Set the injection source well below the pickup frequency. Inject Va = 0 V into the bus voltage input of the

relay with Ia = Ib = Ic above the Minimum Operating Current level. The PICKUP indicator should be off.

2. Slowly increase the voltage in phase A until the PICKUP indicator comes on. Check that the pickup voltage

is the selected Minimum Operating Voltage.

3. Slowly reduce the voltage. Note the voltage at which the PICKUP indicator goes out. Check that this drop

out voltage is the pickup voltage minus 2 x VT nominal. Turn the injection voltage off.

IS200VVIBH1A Minimum Operating Current Supervision:

1. Set the injection source well below the pickup frequency. Inject Va = 0 V into the bus voltage input and Ia =

Ib = Ic = 0 A into the phase current inputs of the relay. The PICKUP indicator should be off.

2. Slowly increase the voltage in phase A above the selected Minimum Operating Voltage. The PICKUP indi

cator should remain off.

3. Slowly increase the phase A current until the PICKUP indicator turns on. This is the Minimum Operating

IS200VVIBH1A Current level. Now reduce the current until the PICKUP indicator turns off. Note the dropout level, which

should be 2% of CT less than the Minimum Operating Current level when the level is ≤ CT. When the Min

imum Operating Current level is > CT, the dropout level should be 97 to 98% of the Minimum Operating

Current level.

4. Slowly increase the phase B current until the PICKUP indicator turns on. This is the Minimum Operating

Current level. Now reduce the current until the PICKUP indicator turns off. Note the dropout level, which

should be 2% of CT less than the Minimum Operating Current level when the level is ≤ CT. When the Min

imum Operating Current level is > CT, the dropout level should be 97 to 98% of the Minimum Operating

Current level.

5. Slowly increase the phase C current until the PICKUP indicator turns on. This is the Minimum Operating

Current level. Now reduce the current until the PICKUP indicator turns off. Note the dropout level, which

should be 2% of CT less than the Minimum Operating Current level when the level is ≤ CT. When the Min

imum Operating Current level is > CT, the dropout level should be 97 to 98% of the Minimum Operating

Current level.

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