INSTALLATION (continued)
observe these lights
Figure
2 – Voltage Checks
First check nameplate on transfer switch; rated voltage must be the same as normal and emergency line voltages.
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
O Black circle means light is on. |
P White circle 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 |
| Close the normal source circuit |
|
| breaker. The Normal Transfer | Source Accepted |
1 | Switch Position and the Normal | Normal |
| Source Accepted lights should | |
| Emergency | |
| 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 | Source Accepted |
| circuit breaker. (Start generator, | |
3 | if necessary.) The Emergency | Normal |
| Source Accepted light should | Emergency |
| 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.*
Transfer Switch nameplate. |
Use a phase rotation meter to
A B C
Also see page
5 check phase rotation of emer- gency source; it must be the same as the normal source.
Shut down the |
|
tor, if applicable. The Emergen- | Source Accepted |
cy Source Accepted light should | |
6 go off. Then put the starting | Normal |
control selector switch (on the | Emergency |
generator set) in the automatic |
|
position. Close enclosure door. |
|
Now continue to 3 – Electrical Operation on next page.