Close To Emergency Source Side; Close To Normal Source Side; Voltage Checks; 3.3.1 Utility Voltage Checks - Generac Power Systems RTS Series Owner's Manual

Operation
3.2.2

CLOSE TO EMERGENCY SOURCE SIDE

Before proceeding, verify the position of the switch by observing
window "A" and window "B". If window "B" displays ON the ATS
is closed in the STANDBY position, with the LOAD connected to
the STANDBY source. It is not necessary to manually close in the
STANDBY position. See Figure 3.3.
If window "B" reads OFF and window "A" reads ON it will be
necessary to trip the ATS to the neutral position. See the TRIP TO
NEUTRAL section.
With handle attached to the actuating shaft. Insert screwdriver
into hole marked "S". While pushing inward on screwdriver, move
manual handle upward as indicated by arrow in illustration until it
stops. DO NOT FORCE. Confirm main contacts close to STANDBY
source when window "B" is ON and window "A" is OFF. Remove
handle from switch.
Figure 3.3 — Closure to Emergency Source Side
CLOSURE TO EMERGENCY SOURCE SIDE
3.2.3

CLOSE TO NORMAL SOURCE SIDE

Before proceeding, verify the position of the switch by observing
window "A" and window "B". If window "A" reads ON the ATS is
closed in the UTILITY position, with the LOAD connected to the
NORMAL source. It is not necessary to manually close in the
UTILITY position. See Figure 3.4.
If window "A" reads OFF and window "B" reads ON it will be
necessary to trip the ATS to the neutral position. See the TRIP TO
NEUTRAL section.
6
With handle attached to the actuating shaft. Move manual handle
upward as indicated by arrow in illustration until it stops. DO NOT
FORCE. Confirm main contacts close to UTILITY source when
window "A" is ON and window "B" is OFF. Remove handle from
switch.
Figure 3.4 — Closure to Normal Source Side
3.3

VOLTAGE CHECKS

3.3.1 UTILITY VOLTAGE CHECKS

1. Turn ON the UTILITY power supply to the transfer switch with
whatever means provided (such as the UTILITY maim line
circuit breaker).
 PROCEED WITH CAUTION. THE TRANSFER
SWITCH IS NOW ELECTRICALLY HOT.
CONTACT WITH LIVE TERMINALS RESULTS
IN EXTREMELY HAZARDOUS AND POSSIBLY
FATAL ELECTRICAL SHOCK.
2. With an accurate AC voltmeter, check for correct voltage.
Single-phase utility supply:
Measure across ATS terminal lugs N1 and N2; N1 to NEUTRAL
and N2 to NEUTRAL.
Three-phase utility supply:
Measure across ATS terminal lugs N1 to N2, N2 to N3, and
N1 to N3.
Measure across ATS terminal lugs N1 to NEUTRAL, N2 to
NEUTRAL, and N3 to NEUTRAL.