UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
4 User Interface
Issue 02 (2017-02-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
153
Item
Description
adaptability is suitable for mains and AC input sources. The default
value is
Strong
.
Output Param. screen
Figure 4-41
Output Param. screen
Item
Description
Output volt.
adjustment
(V)
The output voltage can be adjusted based on the onsite power distribution
condition to ensure a minimum difference between the output voltage and
the bypass voltage. This facilitates uninterruptible transfer from normal
mode to bypass mode. The voltage adjustment range is ±5%. The default
value is 220.0 when the voltage is 380 V, 230.0 when the voltage is 400
V, and 240.0 when the voltage is 415 V.
Output freq.
track rate
(Hz/s)
The value range is 0.1–2.0 Hz/s, and the default value is 0.6 Hz/s.
This parameter can be adjusted based on site requirements. If
Output
freq. track rate (Hz/s)
is slow, the inverter frequency is different from
the bypass frequency when the bypass frequency changes. If output is
overloaded or the inverter is faulty, an interruption (less than 20 ms)
occurs when the UPS transfers from normal mode to bypass mode. If
Output freq. track rate (Hz/s)
is fast, the inverter frequency is
unstable.
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%–100%, and is 80% by
default.
Output
interruption
transfer time
(ms)
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.
The default value is 0 ms.
Max. BPM
Cross currents occur during the transfer between bypass mode and normal