6
4
Verifying the Installation
No.
Item
Result
1
Input circuit breakers and load circuit breakers are OFF.
□
Passed
□
Failed
2
Ground cables are firmly connected. The voltage difference between a
neutral wire and a ground cable is less than 5 V AC. Measure the
resistance between the UPS ground terminal and the equipment room
ground bar, which must be less than 0.1 ohm.
□
Passed
□
Failed
3
Cables and terminals are securely connected.
□
Passed
□
Failed
4
Power cables and signal cables are correctly identified.
□
Passed
□
Failed
5
The input terminals L and N are correctly connected. Use a multimeter
to measure the input and output, which must be free from any short
circuit.
□
Passed
□
Failed
6
The mains supply voltage is 120–280 V AC during power-on (80–280 V
AC after power-on). The battery voltage is greater than the number of
batteries multiplied by 10.8 V DC.
□
Passed
□
Failed
7
For a UPS with long backup time, battery cables and terminals are
connected correctly, and voltages comply with industry standards.
□
Passed
□
Failed
8
For a UPS with long backup time, the UPS is properly connected to
battery strings.
□
Passed
□
Failed
5
Powering On and Starting the UPS
Button Meaning
Description
ESC
Shutdown/Back
•
On the default screen in inverter mode, hold down ESC for more than
5 seconds. Release the button when you hear a beep tone. The
inverter shuts down.
•
On any other screen, press ESC to return to the upper-level menu
(the default screen is the upper-level screen for the main menu
screen).
▲
Up
•
Press
▲
or
▼
to scroll upward or downward.
•
You can set a value by using the list or step increase or decrease.
▼
Down
Startup/Enter/
Battery Self-
Check/Mute
•
On the default screen in bypass mode, hold down for more than
5 seconds. Release the button when you hear a beep tone. The UPS
starts.
•
On the default screen, press . The main menu is displayed. On
any menu screen, press . The lower-level menu is displayed. If
the menu is the last level, an information screen is displayed.
•
On the default screen in normal mode, hold down for more
than 5 seconds. Release the button when you hear a beep tone. The
battery self-check starts.
•
When the buzzer buzzes, hold down for 2–5 seconds. The
buzzer is muted when you release the button. After the buzzer is
muted, the alarm tone is unrecoverable unless a new alarm is
generated.
1. User interface (UI) snapshots shown in this document correspond to V100 and are for
reference only. If any UI changes are made, contact Huawei technical support to obtain the
latest snapshots.
2. For details about the letter and LCD display mapping, and alarm handling, see the appendix.
