LED Indicators

These LEDs are lit when conditions are met to close the breaker:

• Bus Upper Voltage Limit OK

• Gen/Line Upper Voltage

Limit OK

Breaker Close Relays

• Bus Lower Voltage Limit OK

• Gen/Line Lower voltage

Limit OK

• ∆V Limit OK

• ∆F Limit OK

• M-0193B Ready

Dry output contacts rated to make and carry 20 A up to 250 V dc, interrupt 0.9 A, 120 V dc inductive load;

0.4 A, 250 V dc inductive load. Open contacts or contacts to ground will withstand 1500 V ac for one minute.

Status Contacts

Relay contacts; closed indicates ∆F conditions OK

Relay contacts; closed indicates ∆V conditions OK

These are light duty contacts intended primarily for status interrogation by supervisory control They can be

used to light local lights with the following maximum restrictions: 1/2 A at 125 V dc resistive, 1 A 120 V ac,

250 V dc across open contacts

Minimum Frequency Difference

The guaranteed minimum frequency difference for operation is 0.0005 Hz; however, typical units consistently

operate with frequency differences of 0.0001 Hz.