2 Overview
MR33 Series (75K-600K) Modular UPS
User Manual
26
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Alarm action
Protection action
Fault name
Bypass lack-phase.
Bypass module off-line.
ECO output is not allowed.
ECO voltage out of range.
ECO frequency out of range.
Mains power supply is not
allowed.
Mains power down.
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 will
be set to 0.05C
Battery high-temperature alarm.
Charging 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.
Summary of Contents for MR33 Series
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