Installation; Engine Start Control Connections - GE Zenith Controls MX150 Operation And Maintenance Manual

Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.

E

Figure 3

Engine Start

Control Connections

The engine-start terminals are clearly identified by a

label on the microcontroller backplate. In the case of

manual transfer switches, or in other applications not

requiring the microprocessor, clearly marked terminal

blocks are provided in the upper left corner of the con-

trol panel for the engine start control wires.

Terminals for field connections to the A3 Emergency

auxiliary contacts and the A4 Normal 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.

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.

: The equipment rating nameplate on

NOTE

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 the Normal

line terminals.

6.

Close the Emergency source circuit breaker.

7.

Start the generator's engine.

4

MX150 Operation and Maintenance Manual (70

(cont'd)

DANGER

HAZARDOUS VOLTAGE

(Can Cause Severe Injury or Death)

4

1

5

2

(Engine Start)

6

3

P Relay

Contact rating is

10 Ampere at 120VAC

or 28VDC Gold plated

:

The controller will illuminate Source 2

NOTE

Available

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:

VOLTS -

RATING:

AMPS -

SYSTEM VOLTS:

MODEL NUMBER:

Figure 4

CAUTIONS

Certain accessories, per specific

schematics, can inhibit automatic transfer.

Engine Gen-Set could start when

engine control wires are attached.

R

-2000)

when preset voltage

LED

HZ -

PHASE -

GE Zenith Controls