KR series
（
6
-
10kVA
）
user
’s manual
- 41 -
6.4.2 Troubleshooting for the failure of single units system and parallel system
1. How to deal with the failure in single units system
When single units system is failure, cut off the power by “OFF” button on the UPS
panel. If necessary, shut down the load, cut off the UPS input/output breaker to
ensure that the UPS will not be damaged more.
2. How to deal with the problem of main unit in standby system in series? How to
deal with problem when the slave unit is failure?
Standby system in series, when the main unit is failure, cut off the power to the
main unit by “OFF” button on the UPS panel, at the same time, cut off the utility
input breaker and battery breaker of the main unit, Then inform the engineer to
repair the unit.
When the slave unit is failure, cut off the power to the slave unit by “OFF” button
on the UPS panel, at the same time, cut off the utility input breaker and battery
breaker of the slave unit, Then inform the engineer to repair the unit.
3. How to deal with the failure in parallel system
When any unit in parallel system is failure, cut off the power to the UPS by “OFF”
button on the UPS panel then cut off the utility input breaker and battery breaker of
the faulty unit and inform the engineer to repair the unit.
