UPS5000-S-600 kVA
User Manual (Three-phase, Three-wire)
5 Operations
Issue 05 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
171
5.3 Starting the UPS in Battery Mode
Procedure
Step 1
Ensure that batteries have been connected properly. Use a multimeter to check that the voltage
of a battery string is greater than a certain value (single battery voltage x number of batteries
in the battery string).
Step 2
Open the external mains and bypass input switches. When the mains and bypass have no input,
close the battery circuit breaker. If there are multiple battery strings, close the circuit breaker
for each battery string and then the general circuit breaker between battery strings and the
UPS.
Step 3
Use a multimeter to check that the voltage of battery strings at the UPS end is greater than a
certain value (single battery voltage x number of batteries in the battery string), which
indicates that the batteries are connected properly.
Step 4
Press and hold down the
BATT START
button on the bypass module for at least 2 seconds.
The system automatically enters the battery cold start status. The LCD displays the Huawei
logo and an initialization progress bar.
Step 5
After LCD initialization, start the inverter.
----End
5.4 Transferring to Bypass Mode
Before shutting down the inverter, ensure that the bypass is normal. If the bypass is not
normal, after the inverter is shut down, the UPS supplies no power, and the loads shut down.
Shut down the UPS inverter. Shut down the inverter on the LCD or WebUI, and the UPS
transfers to bypass mode.
If the inverter is shut down when the input voltage or frequency exceeds the specified threshold, the
UPS supplies no power, and the loads shut down.
5.5 Setting ECO Mode
Context
The UPS is set to non-ECO mode by default. Set the UPS to ECO mode when energy
saving is required.
In ECO mode, the bypass takes priority over the inverter in supplying power. If the
bypass is disconnected, the UPS transfers to normal mode. The transfer time is less than
2 ms under typical working conditions and less than 10 ms under poor working
conditions.