TRENDnet Series 300 manual Voltage Checks, INSTALLATION continued

INSTALLATION (continued)

Florham Park NJ 07932 USA

TRANSFER SWITCH TEST	BYPASS TIME DELAY SET ENGINE EXERCISER
Press for 15 Seconds	Press until light FLASHES

Figure 1–5. Standard controls and indicators.

observe these lights

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 in the following steps. 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 1–5.

● Black circle means light is on.

❍ White circle means light is off.

* If necessary, adjust voltage regulator on the generator

according to the manufacturer’s recommendations. The

Close the normal source circuit breaker. The Transfer Switch

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

Use an accurate voltmeter to check phase to phase and

2phase 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

and the Emergency Source Available lights should come on.

Use an accurate voltmeter to check phase to phase and

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

Automatic Transfer Switch will respond only to the rated

Use a phase rotation meter to

A B C

voltage specified on the Transfer Switch nameplate.

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.

Now continue to 3 – Electrical Operation on next page.

1--4