Starting The Ups In Battery Mode; Transferring To Bypass Mode; Setting Eco Mode - Huawei UPS5000-A-500 kVA User Manual

Table of Contents

UPS5000-A-500 kVA

User Manual (e-shelter)

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 upstream mains input and bypass input switches, and 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 battery input terminal

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

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.

Context



Issue 02 (2020-01-10)

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.

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

4 ms under typical working conditions and less than 20 ms under poor working

conditions.

Both a single UPS and the parallel system support the ECO mode for higher efficiency.

5 Operations

148

Table of Contents