Generac Power Systems 004635-2, 004635-1 owner manual Actuating Transfer Switch

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Section 3 — Operation

Generac GTS “W” Type Transfer Switch

Figure 3.1 — Actuating Transfer Switch

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.

4.On the generator panel, set the AUTO-OFF- MANUAL switch to MANUAL position. The gener- 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.

DANGER

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.

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.

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

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.

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

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.

6 Generac® Power Systems, Inc.

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Contents Power SYSTEMS, INC General Hazards Table of Contents Transfer Switch Enclosure Equipment Description Transfer Switch Data DecalSafe USE of Transfer Switch IntroductionIntroduction to Installation Connecting Power Source Load LinesUnpacking MountingConnecting Start Circuit Wires Auxiliary ContactsVoltage Checks Functional Tests AdjustmentsManual Operation Actuating Transfer Switch Generator Tests Under Load Do not OverloadAre in Millimeters Electrical Data GTS GTS GTS GTS Exploded Views and Parts List QTY Description Detail A-A Cover LUG 3P 150/200AMP Warranty Schedule