Generac Power Systems 004635-1 User Manual
6
Generac
®
Power Systems, Inc.
3. When certain that UTILITY supply voltage is cor-
rect and compatible with transfer switch ratings,
turn OFF the UTILITY supply to the transfer
switch.
turn OFF the UTILITY supply to the transfer
switch.
4. On the generator panel, set the AUTO-OFF-
MANUAL switch to MANUAL position. The gener-
ator should crank and start.
ator should crank and start.
5. Let the generator stabilize and warm up at no-
load for at least five minutes.
6. Set the generator's main circuit breaker (CB1) to
its ON or CLOSED position.
PROCEED WITH CAUTION. GENERATOR OUT-
PUT VOLTAGE IS NOW BEING DELIVERED TO
TRANSFER SWITCH TERMINALS. CONTACT
WITH LIVE TERMINALS RESULTS IN EXTREMELY
DANGEROUS AND POSSIBLY FATAL ELECTRI-
CAL SHOCK.
PUT VOLTAGE IS NOW BEING DELIVERED TO
TRANSFER SWITCH TERMINALS. CONTACT
WITH LIVE TERMINALS RESULTS IN EXTREMELY
DANGEROUS AND POSSIBLY FATAL ELECTRI-
CAL SHOCK.
7. With an accurate AC voltmeter and frequency
meter, check the no-load, voltage and frequency.
Single-phase generator supply:
Measure across ATS terminal lugs E1 to E2; E1
to NEUTRAL and E2 to NEUTRAL.
Measure across ATS terminal lugs E1 to E2; E1
to NEUTRAL and E2 to NEUTRAL.
a. Frequency ......................................60-62 Hz
b. Terminals E1 to E2 ........................240-246 VAC
c. Terminals E1 to NEUTRAL ............120-123 VAC
d. Terminals E2 to NEUTRAL ............120-123 VAC
b. Terminals E1 to E2 ........................240-246 VAC
c. Terminals E1 to NEUTRAL ............120-123 VAC
d. Terminals E2 to NEUTRAL ............120-123 VAC
Three-phase generator supply:
Measure across ATS terminal lugs E1 to E2, E2
to E3 and E1 to E3.
Measure across ATS terminal lugs E1 to NEU-
TRAL, E2 to NEUTRAL and E3 to NEUTRAL.
Measure across ATS terminal lugs E1 to E2, E2
to E3 and E1 to E3.
Measure across ATS terminal lugs E1 to NEU-
TRAL, E2 to NEUTRAL and E3 to NEUTRAL.
a. Frequency ......................................60-62 Hz
b. Terminals E1-E2, E2-E3, E1-E3 ....208-212 VAC
c. Terminals E1-N, E2-N, E3-N ..........120-122 VAC
b. Terminals E1-E2, E2-E3, E1-E3 ....208-212 VAC
c. Terminals E1-N, E2-N, E3-N ..........120-122 VAC
It will also be necessary to verify that the phase rota-
tion of the utility matches the phase rotation of the
generator. This can be done by using a phase rotation
indicator.
tion of the utility matches the phase rotation of the
generator. This can be done by using a phase rotation
indicator.
DANGER
Section 3 — Operation
Generac GTS “W” Type Transfer Switch
Figure 3.1 — Actuating Transfer Switch