42
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
5.13.
Parallel system commissioning
Parallel system should be commissioned when the stand-alone are all intact.
CAUTION!
Only two UPS systems of this model can be connected in a parallel system.
Take 2 units in parallel.
1.
Confirm the input/output wires connection and input phase sequence are correct; switch
off the battery breaker and measure the +/- bat voltage of all battery group are normal.
2.
Connect the parallel cable, it should be formed loop connection.
3.
Switch on the input breaker of unit 1, and access LCD setting interface to setting the
working mode ID parallel number redundant number. Require setting the in series
number capacity of battery. The output voltage level and Bypass protection range are
default setting.
4.
Turn off the input breaker of Unit 1, and make sure the UPS is off. Turn on the input
breaker of Unit 2, access the LCD setting interface, setting the parallel working mode, ID
（
NO.2), parallel 2 units, redundant number. The other settings are the same as UPS 1
operation.
5.
Turn on Bypass/input/output breaker of both paralleled UPS, then confirm all the setting
are correct. Each UPS has their owed different ID.
6.
Turn on all the battery breaker and confirm the parameter (V/I) are normal.
7.
Connect the load, and check whether the output current is balanced.
8.
Switch on and off the utility breaker to test all the UPS converters system from utility to
battery and restored function are working fine.
Содержание L10US-IB00
Страница 2: ......
