GE Multilin 345 - Page 231

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CHAPTER 7: MAINTENANCE M3 BREAKER MAINTENANCE

345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 7–5

Figure 7-4: Trip circuits with continuous monitoring

The following path is available using the keypad. For instructions on how to use the

keypad, please refer to Chapter 3 - Working with the Keypad.

PATH:

MAINTENANCE > M3 BKR MAINTENANCE > W1(W2) BKR TRIP

RLY1(2) COIL FUNCTION

Range: Disabled, Alarm, Latched Alarm

Default: Disabled

For details see Common setpoints

The “ALARM” and “MAINTENANCE” LEDs will light up upon detection of a RLY1(2) coil

circuitry problem.

RLY1(2) COIL DELAY

Range: 1 to 10 sec in steps of 1 sec

Default: 5 s

This setting defines the RLY1(2) Coil Monitor Delay, before targets appear on the display,

“ALARM” and “MAINTENANCE” LEDs light up on the front panel, and selected output

relays operate.

Trip

Coil

DC -

By-pass

resistor

52a contact

External

jumper

DC +

Output Relay 1 (TRIP)

897787.cdr