Huawei UPS5000-E Series User Manual page 147

UPS5000-E-(50 kVA-125 kVA)
User Manual (Integrated UPS 3.0)
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Issue 09 (2019-12-20)
If this parameter is set to Enable, the system generates an alarm when the branch circuit
breaker is open. If this parameter is set to Disable, the system does not generate the
branch circuit breaker open alarm under any condition. The default value is Enable.
Branch exception alarm enable
If this parameter is set to Enable, the system generates an alarm when the branch circuit
breaker is closed and no load is connected. If this parameter is set to Disable, the system
does not generate the branch exception alarm under any condition. The default value is
Disable.
Voltage harmonic alarm threshold (%)
When harmonic alarming is enabled and the main route voltage harmonic value exceeds
the alarm threshold specified by this parameter, the system generates an alarm. The value
range is 5.0%–30.0%, and the default value is 30.0%.
Current harmonic alarm threshold (%)
When harmonic alarming is enabled and the main route current harmonic value exceeds
the alarm threshold specified by this parameter, the system generates an alarm. The value
range is 5.0%–30.0%, and the default value is 30.0%.
System overvoltage threshold (%)
When the main route voltage is higher than the rated voltage multiplied by the value of
this parameter, the system generates an alarm. The value range is 105.0%–125.0%, and
the default value is 120.0%.
System undervoltage threshold (%)
When the main route voltage is lower than the rated voltage multiplied by the value of
this parameter, the system generates an alarm. The value range is 75.0%–95.0%, and the
default value is 85.0%.
Overload threshold (%)
Branch and main route current overload alarm threshold. When the branch current is
lower than the rated branch current multiplied by the value of Br. cur. shock protect (%)
and higher than the rated branch current multiplied by the value of Overload threshold
(%), the system generates a branch overload alarm. When the main route current is
higher than the rated main route current multiplied by the value of Overload threshold
(%), the system generates a main route overload alarm. The value range is
100.0%–120.0%, and the default value is 100.0%.
Overcurrent threshold (%)
Branch and main route overcurrent threshold. When the main route or branch current is
higher than the rated main route or branch current multiplied by the value of
Overcurrent threshold (%) and lower than the value of rated current multiplied by the
value of Overload threshold (%), the system generates an alarm. The value range is
80.0%–100.0%, and the default value is 80.0%.
Undercurrent threshold (%)
Branch and main route undercurrent threshold. When the main route or branch current is
higher than the rated main route or branch current multiplied by the value of
Undercurrent threshold (%) and lower than the value of rated current multiplied by the
value of Overcurrent threshold (%), the system generates an alarm. The value range is
30.0%–80.0%, and the default value is 60.0%.
Three-phase load imbalance
Main route current three-phase load imbalance alarm threshold. The value range is
5.0%–50.0%, and the default value is 25.0%. When the value obtained after the
difference between the maximum and minimum main route three-phase currents is
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