IST Series UPS (10kVA-200kVA)
User Manual 2 Overview
21
Alarm action Protection action Fault name
allowed.
Mains over-voltage.
Mains under-voltage.
Mains voltage unbalance is too
large.
Mains over-frequency.
Mains under-frequency.
Mains phase sequence is wrong.
Mains lack-phase.
Mains over-current.
Mains current DC component is too
large.
It turns to float charge. The
charge current-limiting value is
0.05C
Battery high temperature alarm.
Charge is not allowed. Battery over-temperature
After the protection for battery under-voltage, once mains recover to normal power supply,
the UPS will restart and charge the batteries.
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