KR series
（
6
-
10kVA
）
user
’s manual
- 26 -
2
．
Under the status that the AC input is normal and UPS has no load, turn on the main switch
of UPS to measure the DC voltage of external battery connection.
3
．
If the result, gained from step 2, called charge voltage is normal, then connect the external battery group
to UPS. At the moment, confirm that the connection polarity is correct.
4
．
After assembly and test finished, the UPS can be put into use.
4.8
（
Parallel
）
System installation
According to the installation methods described previously, connect battery and UPS
mainframe of parallel system respectively and independently; Connect AC output of each
parallel system to output power distribution box of parallel system.
Attention:
Connection and phase sequence of AC input of each unit of parallel system must be
the same, ensure bypass power supply of parallel system in-phase.
Connect parallel ports of each unit of parallel system using shield communication cable
equipped. And fasten relevant screw of RS232.
4.9 Electrical connection
4.9.1 Mode of Single Unit Connection
Connect power cord provided by manufacturers to relevant terminals and ensure reliability of
connection.
Attention1
：
When wiring, make sure that the wires and terminals of input and output should be contacted
reliably, no disqualified contact and reversed wiring.
Attention 2
：
For single unit application, there do not need additional wiring for bypass live line and Zero
line.
