UPS5000-A-500 kVA
User Manual (e-shelter)
4 User Interface
Issue 02 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
95
Item
Description
value is
Strong
.
Output Parameters
Figure 4-23
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