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UPS5000-H-(400 kVA-800 kVA)
User Manual (100 kVA Power Module)
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Step 3 If the original system is a single UPS system, check whether the current version
supports a parallel system. If a parallel system is not supported, upgrade the
software to support the parallel system.
Step 4 Set parallel parameters for the original system.
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Step 5 Set parallel parameters for the new UPS.
1.
Issue 02 (2021-04-22)
Ensure that no abnormal bypass alarm is generated on all the UPSs (including
the new UPS). The original UPSs work in inverter mode while the new UPS
works in bypass mode.
Set the multimeter to the AC voltage position, connect the red probe to phase
A at the front end of the external output switch of the original system,
connect the black probe to phase A at the back end of the bypass input
switch of the original system, and record the voltage difference. Set the
multimeter to the AC voltage position, connect the red probe to phase A at
the front end of the external output switch of the new UPS, connect the black
probe to phase A at the rear end of the external output switch of the original
system, and record the voltage difference. If the phase sequence is correct and
the voltage difference is less than 20 V, perform the subsequent operations. If
the phase sequence is incorrect or the voltage difference for any phase is
greater than 20 V, power off the new UPS completely, and check whether the
bypass input cable for the UPS is properly connected. Perform the same
operations for phases B and C.
If the original system is a single UPS system, see
Parallel
System.
If the original system is a parallel system, change the Requisite UPSs and
Redundant UPSs on each UPS of the original system so that the sum of
Requisite UPSs and Redundant UPSs is equal to the total number of original
parallel UPSs plus the number of new UPSs.
NO TE
The system may generate alarms such as Rack quantity mismatch, Insufficient
redundant racks, and Inter-rack par. cable alarm. The alarms are automatically cleared 1
minute after you connect all parallel cables.
System Settings: On the LCD, choose System Info > Settings > System
Settings. On the WebUI, choose Monitoring > UPS System > Running
Parameter > System Settings.
Table 8-5 System Settings
Item
Setting
Single/Parallel
Set it to
Parallel.
Parallel ID
Set this
parameter to
the original
maximum
parallel ID plus
1.
Copyright © Huawei Technologies Co., Ltd.
8 Parallel System Commissioning
Step 6
in
Description
-
The parallel number of each UPS must
be unique.
8.1 Starting a
139
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