Alpha Technologies APX Series Manual del operador descargar pdf (Pagina 27)

2.8 External Service Disconnect

2. INSTALLATION

The external service disconnect should be placed between the utility power

connection and the APC non-standby power supply. For pole-mount enclosures, it

should be attached directly to the utility pole using 1/4” x 2-1/4” steel wood screws.

If a utility power meter is to be used, its mounting base should be secured in the

same manner. Use a suitable conduit to interconnect the meter base, service

disconnect and power supply enclosure.

IMPORTANT NOTE: A high-magnetic 15 Amp circuit breaker should be used

in order to accommodate the high inrush currents normally associated with

start-up of ferroresonant transformers (400 Amp, no-trip, first half cycle).

Conventional service entrance breakers are not recommended.

High-magnetic breakers for Square D service entrances enclosures are available

from Alpha Technologies.

Device Alpha Part No. Square D

Circuit Breaker 470-013-10 Q0115HM

Alpha BBX Option 020-085-10 Q02-4L70RB

APC

The load side of the circuit breaker is connected to the BLACK wire from the APC’s

receptacle box for 120 VAC/60 Hz operation, (or BROWN wire for 230 VAC/50 Hz

operation); the neutral bus is connected to the WHITE wire from the APC’s

receptacle box for 120 VAC/60 Hz operation (or BLUE wire for 230 VAC/50 Hz

operation). The utility ground connects to the enclosures’s ground terminal. Refer

to photos 2.7.1.1 and 2.7.1.2 on the previous page.

APL

The load side of the circuit breaker is connected to the BLACK wire in the APL’s

terminal block for 120 VAC/60 Hz operation, (or BROWN wire for 230 VAC/50 Hz

operation); the neutral bus is connected to the WHITE wire in the APL’s terminal

block for 120 VAC/60 Hz operation (or BLUE wire for 230 VAC/50 Hz operation).

The utility ground connects to the GREEN/YELLOW tracer wire in the APL’s

terminal block. Refer to photo 2.7.1.b on page 19.

NOTE: Refer to Illustrations 2.8.a and 2.8.b (next page) for wiring detail and service

entrance placement.

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Alpha Technologies APX Series Manual del operador Pagina 27