Alpha Technologies APX Series Manual do Operador descarregar pdf (Página 40)

3.1 Start-up and Test

3. OPERATION

Input AC LINE

BREAKER

AC OUTPUT

FUSE

Once utility and cable connections have been made, the APC or APL should be

tested before placing it into service.

Procedure: Photos; APC-3.1.a; APL-3.1.b

1. Before applying power, ensure that the

AC LINE circuit breaker is in the OUT (OFF) position (the white portion of

the stem will be visible). If it is not, depress the breaker button all the way

until it resets.

2. Plug the APC’s power plug into the receptacle provided in the internal AC

receptacle box. APL models are hard-wired into the terminal block.

3. If the APC is equipped with a LA-M (or LA-P) plug-in MOV, plug it into the

designated receptacle.

4. Switch the external service entrance breaker (located outside of the

enclosure) to ON.

5. Activate the APC’s (APL’s) internal AC circuit breaker by pressing the button

all the way in (the white portion on the stem will not be visible).

6. Use a true reading RMS digital multimeter to measure the output voltage at

the output connector of the APC (APL). The voltage should read between

57 and 63 VAC for 60VAC output models (45.6 to 50.4 for 48V models).

NOTE: If a non-RMS type voltmeter is used, the reading can be off by as much

as 10% due to the “quasi” square wave output of the ferroresonant transformer.

7. If the AMM-C ammeter option is installed (APC models only), ensure that

the current draw is in the correct range, (i.e., below 8 amps for 8 amp units,

and below 14 amps for 14 amp units).

8. Place the cover on the APC (APL). Make sure that the tabs on the cover

align with the baseplate assembly. Secure the hold-down screw and

lock the enclosure.

Photo 3.1.a

APC Circuit Breaker and Fuse

Location

Photo 3.1.b

APL Circuit Breaker and

Fuse Location

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Alpha Technologies APX Series Manual do Operador Página 40