Winco ASCO 300 D Design 30-230 Amp - Manual (Page 7)

INSTALLATION (continued)
1--4
Press until light FLASHES Press for 15 Seconds
TRANSFER SWITCH TEST BYPASS TIME DELAY SET ENGINE EXERCISER
observe these lights
Figure 1–5. Standard controls and indicators.
2 – Voltage Checks
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 6 at the right. Observe the status
lights. See Figure 1–5.
● Black circle means light is on.
❍ White circle means light is off.
* If necessary, adjust voltage regulator on the generator
according to the manufacturer’s recommendations. The
Automatic Transfer Switch will respond only to the rated
voltage specified on the Transfer Switch nameplate.
Also see page 4–1 for the HI–LOW voltage adjust setting
in the controller. The LOW setting shifts all voltage
settings down 4.2%; for example, 240 V to 230 V.
1
Close the normal source circuit
breaker. The Load Connected
To Normal and the Normal
Source Available lights should
come on.
2
Use an accurate voltmeter to
check phase to phase and
phase to neutral voltages
present at the transfer switch
normal source terminals.
3
Close the emergency source
circuit breaker. (Start generator,
if necessary.) The Load
Connected To Normal and the
Emergency Source Available
lights should come on.
4
Use an accurate voltmeter to
check phase to phase and
phase to neutral voltages
present at the transfer switch
emergency source terminals.*
5
Use a phase rotation meter to
check phase rotation of
emergency source; it must be
the same as the normal source.
A B C
6
Shut down the
engine–generator, if applicable.
The Emergency Source
Accepted light should go off.
Then put the starting control
selector switch (on the
generator set) in the automatic
position. Close enclosure door.
Now continue to 3 – Electrical Operation on next page.