INSTALLATION (continued)
1--5
pressthisbutton
observe these lights
Figure 1–8. Standard controls and indicators.
3 – Electrical Operation
This procedure will check t he electrical operati on of the
AutomaticTransfer SwitchingEquipment.

Close the automatic transfer switching

equipment enclosure door and tighten the

screws before you test electrical operation.

TransferTest
Both normaland emergency sources must be available
and the emergencysource generator (if used) must be
capable of being started in this procedure.
Performsteps 1 through 8 at the right. Observethe status
lights. See Figure 1–8.
OBlack circlemeans light is on.
PWhite circle means light is off.
NOTE: If Motor Load Transfer
featurei s activated,then transfer may
not occurimmediately after the
respectivetime delays. Transferwill
only occurwhen the phase relatio nship
betweensourcesiscorrect.
NOTE: The operatingtransfer time of the transfer
switchingdevice is 0,17 second maximum, whichis
measuredfrom the time that power is applied to the
operatingcoil of the transfer switching device until the
maincontacts close on the alternative source.
This completesthe Functional Testof the ASCO
Series200 AutomaticTransferSwitching Equipment.
Leave the engine–generator starting control in the
automaticposition.
1
The normal source must be
availableand the generator
must be ready to start.
Check that the Normal Source
Accepted light is on.
SourceAcce pted
Normal
Emergency
2
Press and hold theTransfer Test
button until the enginestarts
and runs. This should happen
within15 sec.
Transfe r
Test
3The EmergencySource
Accepted light should comeon.
SourceAcce pted
Normal
Emergency
4
The transfer switching device
should transfer to the
Emergency position. The
EmergencyTransfer Switch
Position lightshould come on
and the Normal light should go
off.
Transfe r Switch
Position
Normal
Emergency
5
If the transfer to emergency
delayis used the transfer
should occursafter a time delay
(up to 5 minutes).
Forimmediatetransferpress
the Bypass Time Delay button.
Bypass
TimeDelay
6
The transfer switching device
should transfer back to the
Normal position. The Normal
TransferSwitch Position light
should come on and the
Emergencylight should go off.
Transfe r 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 shouldstop
and the EmergencySource
Accepted light should go off.
SourceAcce pted
Normal
Emergency