Alpha Technologies XM3-HP Series - Technical Manual - Manual (Page 91)

91 017-882-B0-001 Rev. C2 (10/2013)
3.0
Operation
1. Before turning on the AC voltage input breaker, use a voltmeter to verify the input voltage is within
specifications.
2. When the proper voltage is present, verify the battery voltage indicated on the Smart Display is
greater than 31.5VDC. Disconnect the Power Supply from the generator output and plug the Power
Supply input cord into the convenience outlet within the enclosure. The Power Supply operates
on battery backup for this short period of time, but exercise caution during this changeover as the
grounding circuit to the Power Supply is broken.
If the batteries are at or below the low voltage cutoff, then the Power Supply will NOT transfer to
battery backup and there will be a momentary power outage to the cable system while you make this
changeover.
Turn on the AC input power.
Shut down the generator and remove the grounding system. If necessary use the Smart Display to return
the Frequency Input Tolerance back to the normal ±3Hz range.
3.9 Resumption of Utility Power
Use caution when disconnecting and reconnecting a generator to utility power.
Dangerous voltages are present.
WARNING!
Exercise care to ensure that both powering systems are not connected at the same time or
damage to the Power Supply and the generator may result.
CAUTION!
• The Power Supply must be serviced by qualified personnel.
• Use heavy gloves when handling a unit that has recently been taken out of service. The
ferroresonant transformer generates heat that may cause burns if handled with bare hands.
• Alpha Technologies is not responsible for battery damage due to improper charger voltage
settings. Consult the battery manufacturer for correct charger voltage requirements.
• When removing batteries, ALWAYS switch the battery breaker off before unplugging the battery
connector.
• Always wear safety glasses when working with batteries.
CAUTION!
3.0 Operation, continued