Winco ASCO 300 H Design 600-1200 Amp - Manual (Page 9)

INSTALLATION (continued)
1---5
press this button
observe these lights
Figure 1–6. Standard controls and indicators.
3 – Electrical Operation
First check nameplate on transfer switch; rated voltage
must be the same as normal and emergency line voltages.
Verify that the feeders have been
connected to the proper lugs.
!
Use extreme caution when using a meter
to measure voltages in the following
steps. Do not touch power terminals;
shock, burns, or death could result !
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
Accepted light is on.
Source Accepted
Normal
Emergency
2
Press and hold the Transfer Test
button until the engine starts
and runs. This should happen
within 15 sec.
Transfer
Test
3 The Emergency Source
Accepted light should come on.
Source Accepted
Normal
Emergency
4
The transfer switch should
transfer to the Emergency
position. The Emergency
Transfer Switch Position light
should come on and the Normal
light should go off.
Transfer 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).
For immediate transfer press
the Bypass Time Delay button.
Bypass
Time Delay
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.
Transfer 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).
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
Accepted light should go off.
Source Accepted
Normal
Emergency