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UPS5000-A-400 kVA
User Manual (60 kVA, PF=0.9)
Item
output
Calib. output
current if no
load
Output
interruption
transfer time
(ms)
Max. BPM
transfer times
Inverter async.
alarm
Bus
overvoltage
recovery
Issue 05 (2019-12-24)
Description
0 when no load is output. The
output load rate is displayed as
3%. When this parameter is set to
Disabled, the output current and
output load rate are not adjusted
to zero.
If this parameter is set to Enable,
the current at no load will be
calibrated once automatically.
This function can be used only
when the UPS carries no load.
The interruption for the UPS to
transfer from normal mode to
bypass mode is 1–2 ms, and from
bypass mode to normal mode is
0–20 ms. Set this parameter
based on the output interruption
time acceptable to loads.
Cross currents occur during the
transfer between bypass mode
and normal mode, which impacts
the system. This parameter
specifies the number of transfers
between bypass mode and
normal mode within 1 hour,
which ensures system security.
Specifies whether an Inverter
asynchronous alarm can be
displayed on the LCD when the
inverter cannot track the bypass
frequency change. Normal power
supply is not affected no matter
whether this parameter is set to
Enable or Disable.
Specifies whether to
automatically clear the alarm and
restart the rack when the rectifier
or inverter shuts down due to a
bus overvoltage alarm. If Bus
overvoltage recovery is set to
Enable, the bus overvoltage
alarm is automatically cleared,
and the rectifier and inverter
automatically start when the bus
voltage recovers (less than 420
V) within Bus overvolt.
recovery time. When Bus
overvoltage recovery is set to
Disable, the bus overvoltage
alarm cannot be automatically
Copyright © Huawei Technologies Co., Ltd.
4 User Interface
Default Value
Value Range
Disable
Disable, Enable
0
0 ms, 40 ms, 60
ms, 80 ms, 100
ms, 120 ms
5
1–10
Disable
Disable, Enable
Enable
Disable, Enable
123
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