Cold-Starting The Ups Using Batteries; Transferring To Bypass Mode; Setting Eco Mode - Huawei UPS5000-E Series User Manual

UPS5000-E-(350 kVA–800 kVA)
User Manual (50 kVA Power Modules)

4.3 Cold-Starting the UPS Using Batteries

Procedure
Step 1 Ensure that batteries have been connected properly. Use a multimeter to check
that the absolute voltages of positive and negative battery strings are greater than
a certain value (single battery voltage x number of batteries in the battery string).
Step 2 Turn off the mains and bypass upstream input switches, and switch on the battery
circuit breaker. If there are multiple battery strings, switch on the circuit breaker
for each battery string and then the general circuit breaker between the battery
strings and the UPS.
Step 3 Use a multimeter to measure the positive and negative battery string voltages at
the UPS battery input terminals. If the absolute values of the voltages are greater
than a certain value (single battery voltage x number of batteries in the battery
string), 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 MDU
displays the initialization progress bar.
Step 5 After the initialization is complete, start the inverter on the LCD.
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4.4 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.

4.5 Setting ECO Mode

Prerequisites
The system is working in inverter mode.
Issue 15 (2022-01-30)
NO TICE
NO TE
If you shut down the inverter when the bypass input voltage or frequency exceeds the
specified threshold, the UPS supplies no power, and the loads are powered off.
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