Installation (cont’d)
DANGER
HAZARDOUS VOLTAGE
(Can Cause Severe Injury or Death)
Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.
| 4 | 1 |
|
E | 5 | 2 | P Relay |
(Engine Start) | |||
6 | 3 | Contact rating is | |
| 10 Ampere at 120VAC | ||
| or 28VDC Gold plated |
Figure 1
Engine Start
Control Connections
The
Figure 2 shows location of engine start connections for Bypass Isolation Transfer Switch. Figure 5 (pg.6) shows location of engine start connections for Automatic Transfer Switch.
Terminals for field connections to the A3 Source 2 auxiliary contacts and the A4 Source 1 auxiliary contacts are also provided. These terminals are clearly marked and appear on the side of the power panel. On 400 amp metal frame units these terminals appear on
the bracket above the operator handle.
Figure 2 (Typical)
Initial Energization
Before proceeding, refer to the information package supplied with the ATS and read and understand the information on all accessories provided.
1.Unlock the enclosure.
2.Open the enclosure.
3.Verify the correct system voltage.
NOTE: The equipment rating nameplate on the transfer switch lists the voltage. See Figure 3.
4.Close Source 1 circuit. breaker.
NOTE:The controller will illuminate Source 1 Available LED if proper voltage
is sensed.
5.Verify the phase to phase voltages at Source 1 line terminals.
6.Close Source 2 circuit breaker.
7.Start the generator’s engine.
NOTE: The controller will illuminate Source 2 Available LED when preset voltage and frequency levels are reached.
8.Verify the phase to phase voltages at Source 1 line terminals.
9.Verify that the phase rotation of Source 1 is the same as the phase rotation of
Source 2.
10.Shut down the generator’s engine.
11.Place the starting control in the Automatic position.
12.Complete the visual inspection of the transfer switch.
13.Close the enclosure.
14.Lock the enclosure.
g GE Zenith Controls
SERIAL NUMBER: |
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RATING: VOLTS - |
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HZ - | |
AMPS - | PHASE - |
SYSTEM VOLTS: |
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MODEL NUMBER: |
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Figure 3
CAUTIONS
Certain accessories, per specific
schematics, can inhibit automatic transfer.
Engine
■ 4 | GE Zenith Controls ■ |