Emerson FDESIGN 600800A, GDESIGN 10004000A Electrical Operation, Close the enclosure door first

INSTALLATION (continued)

GREEN RED

observe		operate
these lights		this switch
GREEN	RED	AMBER

Figure 1-7. Standard controls and indicators.

3 --- Electrical Operation

This procedure will check the electrical operation of the Automatic Delayed–Transition Transfer Switch. See Figure 1---7.

Close the enclosure door first !

Transfer Test

Both normal and emergency sources must be available and the emergency source generator (if used) must be capable of being started in this procedure.

Perform steps 1 through 5 at the right. Observe the status lights.

QBlack square means light is on. S White square means light is off.

This completes the Functional Test of the ADTS.

Turn and hold Transfer Control switch clockwise to Transfer

1Test until the engine starts and runs (within 15 sec.). The Emergency Source Accepted light should come on.

Transfer switch CN opens and the Transfer Switch Connected

2to Normal light should go off and the Load Disconnect Active light should come on. Both CN & CE contacts are now open.

After the delay transition time delay, the CE Transfer switch will operate to the Emergency

3position. The Transfer Switch Connected To Emergency light should come on and Load Dis- connect Active light goes off.

Transfer switch will operate back to Normal position after Feature 3A time delay. For im- mediate retransfer turn Transfer

4Control counterclockwise to Retransfer Delay Bypass. The Transfer Switch Connected To Normal light should come on; Transfer Switch Connected to Emergency light should go off.

The engine–generator will stop after the Feature 2E time delay

5(unloaded running engine cool- down). The Emergency Source Accepted light should go off.

Load

Disconnect

Active

Load

Disconnect

Active

Load

Disconnect

Active

Load

Disconnect

Active

Load

Disconnect

Active

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