INSTALLATION (continued)
1--5
pressthisbutton
observe these lights
Figure 1–6. Standard controls and indicators.
3 – Electrical Operation
This procedure will che ck the electrical opertion oft he
AutomaticTransfer Switch.
Close the enclosuredoor first !
Transfer Test
Both normal and emergencysources must be available
and the emergency sourcegenerator (if used) must be
capable of being started in this procedure.
Perform steps 1 through 8 at the right. Observe the
status lights. See Figure 1–6.
OBlack circle means light ison.
PWhite circle means light is off.
NOTE: IfMotorLoadTransferfeature
is activated, then transfer maynot occur
immediately after the respectivetime
delays. Transferwill only occur when
the phase relationshipbetween sources
is correct.
This completes the FunctionalTest of the ASCOSeries 300
AutomaticTransfer Switch. Leave the engine– generator
starting control in the automatic position.
1
The normal source must be
availableandthegenerator
must be ready to start.
Check that the Normal Source
Accepted light is on.
Source Accepted
Normal
Emergency
2
Press and hold the TransferTest
button until the engine starts
and runs. This should happen
within 15 sec.
Transf er
Test
3The Emergency Source
Accepted light should come on.
Source Accepted
Normal
Emergency
4
The transfer switch should
transfer to the Emergency
position. The Emergency
TransferSwitch Position light
should come on and the Normal
light should go off.
Transf er Switch
Position
Normal
Emergency
5
If the transfer to emergency
delay is used the transfer
should occurs after a time delay
(up to 5 minutes).
Forimmediatetransferpress
the Bypass Time Delay button.
Bypass
TimeDelay
6
The transfer switch should
transfer back to the Normal
position. The Normal Transfer
Switch Position light should
come on and the Emergency
light should go off.
Transf er Switch
Position
Normal
Emergency
7
If the retransfer to normal delay
is used the retransfer should
occur after a time delay
(up to 30 minutes).
Forimmediateretransferpress
the Bypass Time Delay button.
Bypass
TimeDelay
8
The unloaded running delay
keeps the generator running for
5 minutes (cool–down period).
Then the generator should stop
and the Emergency Source
Accepted light should go off.
Source Accepted
Normal
Emergency