Emerson 7000 manual Voltage Checks, Verify that the feeders have been connected to the proper lugs

INSTALLATION (continued)

GREEN RED

observe these lights

GREEN RED

Figure 1-4. 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. 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 1–4.

Q	Black square means light is on.
S	White square means light is off.

Close the normal source circuit breaker. The Transfer Switch

1Connected To Normal and the Normal Source Accepted lights should come on.

Use an accurate voltmeter to check phase to phase and

2 phase to neutral voltages pres- ent at the transfer switch normal source terminals.

Close the emergency source circuit breaker. (Start generator,

3if necessary.) The Transfer Switch Connected To Normal & Emergency Source Accepted lights should come on.

Use an accurate voltmeter to check phase to phase and

4 phase to neutral voltages pres- ent at the transfer switch emer- gency source terminals.*

* If necessary, adjust voltage regulator on the generator

according to the manufacturer’s recommendations.

Use a phase rotation meter to

A B C

The Automatic Transfer Switch will respond only to the

rated voltage specified on the Transfer Switch

nameplate.

Note

Refer to Section 3 of Group 5 Controller User’s Guide 381333–126 for how to display the Status of the ATS and the Voltage and Frequency of each source.

Now continue to 3 – Electrical Operation on next page.

1---3

5 check phase rotation of emer- gency source; it must be the same as the normal source.

Shut down the engine–genera- tor, if applicable. The Emergen- cy Source Accepted light should

6go off. Then put the starting control selector switch (on the generator set) in the automatic position. Close enclosure door.