Emerson FDESIGN 30004000A, GDESIGN 10004000A manual Voltage Checks, INSTALLATION continued

INSTALLATION (continued)

GREEN RED

observe these lights

GREEN RED AMBER

Figure 1-6. 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.

Before energizing the switch check to be sure that both normal and emergency contacts are not left in the closed position.

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 1–6.

QBlack square means light is on. S White square means light is off.

*If necessary, adjust voltage regulator on the generator according to the manufacturer’s recommendations. 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--4

Close the normal source circuit breaker. The Transfer Switch

1Connected To Normal and the

	Normal Source Accepted lights	Active
		Load
		Disconnect
	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,
3	if necessary.) The Transfer
	Switch Connected To Normal &	Load
	Emergency Source Accepted	Disconnect
		Active
	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.*
	Use a phase rotation meter to	A B C
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
6 go off. Then put the starting
	control selector switch (on the	Active
		Load
		Disconnect
	generator set) in the automatic
	position. Close enclosure door.