11
017-230-B4 Rev B
3. Site Planning
WARNING!
Restricted Access: The Alpha FXM must be installed in a restricted area accessible only
by qualified service personnel.
The Alpha FXM is intended for permanent AC connection only. The only exception is the
FXM650(U) model.
The Alpha FXM must be correctly grounded for proper operation. Older facilities may
have inadequate electrical grounding. Inspection must be performed by a qualified elec
-
trician before installation to ensure that grounding meets the local electrical code.
The utility line attached to the Alpha FXM input MUST be protected by a circuit breaker
certified for this use in accordance with the local electrical code. The UPS must be con
-
nected only to a dedicated branch circuit.
The UPS equipment that is powered by this service panel requires the neutral to be per-
manently bonded to the ground. Always disconnect the batteries before servicing the
circuit breaker panel.
The input and output lines to and from the Alpha FXM MUST have disconnect devices
attached.
The Alpha FXM is suitable for installations in Network Telecommunication Facilities and locations where the
National Electrical Code applies.
Grounding:
The Alpha FXM is suitable both for installation as part of a common bonding network and an iso-
lated bonding network.
For installations above 1400 m (4500 ft) elevation, additional cooling may be needed to reduce the operating
temperature of the Alpha FXM. The maximum allowable operating temperature must be reduced by 2°C (3.5
°F) for every 300 m (1000 ft) above 1400 m (4500 ft).
3.1 Safety Precautions
•
Install the Alpha FXM on a surface that can support its weight. See Chapter "9. Specifications".
•
The input wiring must reach a suitably grounded power outlet and the load wiring must reach the
Alpha FXM output terminal blocks.
•
Place the Alpha FXM in a properly sheltered location or inside a weather-proof enclosure to protect the
electronics from water, dust and other possible contamination.
•
Alpha Technologies offers a wide range of outdoor enclosure systems. Visit our website at www.alpha.ca,
or call customer service for more information.
•
Backup Generator (If used)
Use
Generator
mode so that noise tolerance is increased to accept the fluctuations created by a genera-
tor. See
Sense Type
in Table B on page 24 .
Use a generator with electronic speed and voltage controls which produces less than 10% voltage to-
tal harmonic distortion (THD). Mechanical governors can force the Alpha FXM to run continuously in the
Inverter mode.
Before installation, make sure the generator’s output voltage is compatible with the Alpha FXM input volt-
age requirements. To make sure the system runs smoothly, use a generator that supplies twice as much
power as drawn by the total load.
