Alpha Technologies XM3-HP Series - Technical Manual - Manual (Page 33)

33 017-882-B0-001 Rev. C2 (10/2013)
1.0
Introduction
High delta mean alarm during charging
A high delta mean alarm during charging is usually seen when one battery has either
higher or lower capacity than the other two batteries. This may be seen on initial install
of unbalanced batteries. Verify that the alarm clears within 7 days. Otherwise, investigate
the batteries.
High delta mean during discharging
A high delta mean alarm during discharging is usually seen when one battery has either
higher or lower capacity than the other two batteries. The SAG cannot compensate
for reduced capacity batteries in discharge mode to maintain balance. Investigate the
batteries.
Miswired string alarm during discharging/charging
A miswired string alarm occurs when a battery voltage is not within the specified valid
battery range of 9.9V to 15.7V, but the other batteries are in valid ranges. During
discharge, a battery with a much lower capacity will have a voltage that is much lower
than the others in the string. This can cause the low capacity battery voltage to fall
outside the limits of a valid battery, and the SAG may identify the string as miswired.
Investigate the batteries.
Maintenance required and stuck relay alarm at the same time
This is normal alarm operation. A stuck relay alarm will trigger an alarm in the SAG and
the XM3 will trigger a maintenance required alarm. Replace the unit if the alarm does not
clear itself.
Preventive maintenance required and high delta mean alarm at the same time
This is normal alarm operation. A high delta mean alarm will trigger an alarm in the SAG
and the XM3 will trigger a preventive maintenance required alarm. Investigate the battery
condition if the alarm persists.
1.3.4.5 Troubleshooting
1.3 Alpha XM3-HP CableUPS Layout, continued
1.3.4 Smart AlphaGuard, continued
1.0 Introduction, continued