UPS5000-E-(360 kVA-480 kVA)
User Manual (40 kVA Power Modules)
4 User Interface
Issue 07 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
121
Self-load output cur. ratio (%)
Set the percentage of the output current to the rated output current when the UPS is in
self-load mode. The value can be 20% to 100%, 80% by default.
Output interruption transfer time (ms)
The default value is 0 ms. The transfer from inverter mode to bypass mode takes 1–2 ms,
and the transfer from bypass mode to inverter mode takes 0 to 20 ms.
Max. BPM transfer times
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. The value can be
1–10, 5 by default.
Bypass Param.
Figure 4-37
Bypass Param. screen
Bypass frequency range (Hz)
When the difference between the bypass input frequency and the rated frequency is
greater than this value, the system determines that the bypass frequency is abnormal and
that the bypass is unavailable.
The bypass frequency range must be greater than the ECO frequency range. The value
range is ±6 Hz, and the default value is ±2 Hz.
Maximum bypass voltage
Upper threshold for the bypass voltage. When the difference between the bypass voltage
and the rated voltage exceeds this value, the system determines that the bypass voltage is
abnormal and that the bypass is unavailable.
When the voltage level is 380 V, the value range is +10%, +15% (default), +20%, and +25%.
When the voltage level is 400 V, the value range is +10%, +15% (default), and +20%.
When the voltage level is 415 V, the value range is +10% (default) and +15%.
Minimum bypass voltage
Lower threshold for the bypass voltage. When the difference between the bypass voltage
and the rated voltage exceeds this value, the system determines that the bypass voltage is
