40
*
Input abnormal
*
Phase sequence not correct
Cut off
Rectifier
switch
Turn on the switch,
restart the UPS
1. Checking whether the inverter damage & the
connect reliable
2. Checking the output current, overload and short
circuit
3. Checking whether the battery normal
4. Checking whether the contact normal
Input abnormal
Input phase
sequence
Input
frequency
Input voltage
Input current
date
Restart function recover
1. Checking whether the input wires reliable and
reasonable
2. Checking whether the input phase and the phase
sequence correct
Abnormal
1. Input frequency within the rated range
2. Change or replace the input power
Abnormal
1. Input voltage within the rated range
2. Change or replace the input power
Abnormal
1. Checking whether the sampling single connection
reliable. Also checking the insulation
2. Checking the adjusting whether the varistor
excursion
3. Checking whether the connector of insert
components on the circuit reliable
Abnormal
Turn on
Turn on
Turn on
Normal
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