Huawei UPS5000-A-500 kVA User Manual page 104

UPS5000-A-500 kVA
User Manual (e-shelter)
Bypass Parameters
Figure 4-24 Bypass Param. screen
Issue 02 (2020-01-10)
Item
Max. BPM transfer times
Item
Bypass frequency range
(Hz)
Maximum bypass voltage
Copyright © Huawei Technologies Co., Ltd.
Description
output interruption time acceptable to loads. The default
value is 0 ms.
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, and is 5 by
default.
Description
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 not normal,
and that the bypass is unavailable.
The frequency range must be greater than the ECO
frequency range. The value range is ± 0.5 Hz to ± 6 Hz, ± 2
Hz by default.
When the difference between the bypass voltage and the
rated voltage exceeds the upper threshold for the bypass
voltage, the system determines that the bypass voltage is
not normal and that the bypass is unavailable.
NOTE
 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%.
4 User Interface
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