Configuration of Shipped ATS
The MV ATS is shipped with the circuit breakers and controls in the following state:
ON CB SECTION(S) - Circuit Breakers, check these items
▪Normal source circuit breaker (CBN)
in the OPEN position with the closing spring discharged.
▪Emergency source circuit breaker (CBE)
in the OPEN position with the closing spring discharged.
▪Normal source circuit breaker control switch (53CBN)
in the TRIP position (green target displayed on control switch)
▪Emergency source circuit breaker control switch (53CBE)
in the TRIP position (green target displayed on control switch)
ON CONTROL SECTION – Controls, check this item
▪Transfer Switch
Circuit breaker position lights green=CB open red=CB closed
Breaker control target indicator green=tripped red=closed
Figure
(CB SECTION) (CONTROL SECTION)
Emergency source
circuit breaker control switch
Transfer Switch
control switch
Normal source circuit breaker control switch
Figure
!WARNING
Be sure to close both enclosure doors before proceeding to prevent personal injury in case of electrical system fault.
Energizing the Normal Source, Setting Automatic Operation Mode
After the MV ATS is installed, the Normal source can be energized. Then the controls can be set for automatic (standby) operation. The Normal and Emergency sources must be available. Follow this procedure:
ON CONTROL SECTION – Controls, check these items
▪The transfer control indicator lights Normal Source Accepted and TS Locked Out should be on.
▪The controller display should show that the transfer switch is Locked Out.
ON CB SECTION(S) - Circuit Breakers, check these items
▪Normal source circuit breaker control switch should indicate that the circuit breaker is OPEN (green light).
▪Emergency source circuit breaker control switch should indicate that the circuit breaker is OPEN (green light).
Energizing procedure
1.On Control Section, turn the Transfer Switch
2.On CB Section, turn the Normal source circuit breaker control switch to CLOSE position (red target window).
3.On CB Section, turn the Emergency source circuit breaker control switch to the CLOSE position (red target).
4.On Control Section, press the transfer controls Alarm Reset button. Normal source circuit breaker should close.
The Normal source CB control switch should indicate that the circuit breaker is CLOSED (red light). The ATS is now in an automatic (standby) operating mode. Proceed to transfer test.
