S&C Instruction Sheet 661-500 17
Operation
Power Switch Operation and Configuration
The charger has three power switches, as shown in
Figure 15:
• A charger power switch
• A 120-Vac single-phase power switch
• A three-phase power switch
Complete the following steps to turn on the charger
(assuming all power sources are connected to the charger):
STEP 1.
Turn on the desired power switch to power the
charger from an ac source (either the three-
phase power switch or the 120-Vac single-phase
power switch).
STEP 2.
After the desired power source switch is turned
on, turn on the CHARGER POWER switch. The
LCD screen will turn on and the charger will
power on.
NOTICE
If the charger has a battery connection,
a 120-Vac single-phase power source
connection, and a three-phase power
source connection, and all three switches
are turned on, the charger will be powered
by the 120-Vac single-phase power source
as a default .
If the charger has a battery connection,
but no 120-Vac single-phase power source
connection and no three-phase power
source connection, and all three switches
are turned on, the charger will be powered
by the battery .
Figure 15. The charger’s three power switches.
Figure 16. Switches in the Off position.
120-Vac SINGLE-PHASE
POWER switch
Three-phase power
switch
CHARGER POWER switch