Huawei UPS5000-E-80K-LABBS User Manual page 118

UPS5000-E-(20 kVA-80 kVA)
User Manual (Integrated UPS, 208 V)


Bypass Parameter Settings
Set bypass parameters, such as the bypass voltage and frequency range.
Figure 5-43 Bypass Parameter Settings



Issue 04 (2020-03-12)
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%–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
to 10, 5 by default.
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 ± 0.5 Hz to ± 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 208 V, the value range is 10%, 15%, 20% (default), and 25%.
 When the voltage level is 220 V, the value range is 10%, 15% (default).
 When the voltage level is 230 V, the value range is 10%.
Minimum bypass voltage
Copyright © Huawei Technologies Co., Ltd.
5 User Interface
110