Winco ASCO 300 E Design 260-400 Amp - Manual (Page 7)

INSTALLATION (continued)
1--5
Press until light FLASHES Press for 15 Seconds
TRANSFER SWITCH TEST BYPASS TIME DELAY SET ENGINE EXERCISER
observe these lights
press this button
Figure 1–6. Standard controls and indicators.
3 – Electrical Operation
This procedure will check the electrical operation of the
Automatic Transfer Switch. See Figure 1–6.
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 8 at the right. Observe the status
lights. See Figure 1–6.
● Black circle means light is on.
❍ White circle means light is off.
NOTE: If Motor Load Transfer feature is
activated, then transfer may not occur
immediately after the respective time
delays. Transfer will only occur when the
phase relationship between sources is
correct.
This completes the Functional Test of the ASCO Series 300
Automatic Transfer Switch. Leave the engine–generator
starting control in the automatic position.
1
The normal source must be
available and the generator
must be ready to start.
Check that the Normal Source
Available light is on.
2
Press and hold the Transfer
Switch Test button until the
engine starts and runs. This
should happen within 15 sec.
TRANSFER SWITCH TEST
3 The Emergency Source
Available light should come on.
4
The transfer switch should
transfer to the Emergency
position. The Load Connected
to Emergency light should come
on and the Load Connected to
Normal light should go off.
5
If the transfer to emergency
delay is used the transfer
should occurs after a time delay
(up to 5 minutes).
For immediate transfer press
the Bypass Time Delay button.
BYPASS TIME DELAY
6
The transfer switch should
transfer back to the Normal
position. The Load Connected
to Normal light should come on
and the Load Connected to
Emergency light should go off.
7
If the retransfer to normal delay
is used the retransfer should
occur after a time delay
(up to 30 minutes).
For immediate retransfer press
the Bypass Time Delay button.
BYPASS TIME DELAY
8
The unloaded running delay
keeps the generator running for
5 minutes (cool–down period).
Then the generator should stop
and the Emergency Source
Available light should go off.