KR series（6-10kVA）user’s manual
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Fig. 5-2.1 single unit operation Steps for KR series(6&10Kva)
5.3 Operation instruction
5.3.1 Inspection before power on
Before electrifying for the UPS, please check following below requirements. Only when
confirm all is in good condition, the UPS can be started.
1. Connect rated power to the input terminal bar.
2. Check the load equipments
(1) Confirm the load is non-inductive load. UPS is not recommended to connect with the
inductive load, such as motors, fans, air conditioners etc. Such loads usually use the grid power
directly.
(2) Make sure that the load is turned off. Meanwhile, the load capacity shall not exceed the
UPS rated output capacity, otherwise, it will cause the system overload protection. Calculation
of load capacity as follow:
KR series UPS load capacity are designed as per 80% (nominal rated power) of the
resistant load. Generally UPS with computer load can withstand the maximum load number
n estimated as following:
P is UPS output capacity（VA ）， Pi is the No. i load capacity(VA).
3. Confirm the UPS has no short circuit between the input live line and neutral line and
between the live line and the ground line. Also confirm no short circuit between the output
lines.
4. Check if the air breaker on UPS is on “OFF”.
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