Delta Electronics NH Plus Series User Manual

5
Η
Operating Procedures
5-3
5-4 Manual Bypass Startup Procedures (Single Unit)
If the UPS is in normal mode, press the “O” button for 3 seconds until you hear a “beep”
and then release the button. The LCD screen will show “SHUTDOWN UPS?”, then select
“YES” and press “
” to confirm. The UPS will automatically transfer to bypass mode.
1. Confirm if the UPS is in bypass mode.
2. Switch on “Q3”.
3. Switch off “Q4”.
1. Only for maintenance purpose, you can manually turn on the bypass switch
“Q3”. If you switch on Q3 under normal condition, the inverter will shut down
and the output will be supplied by manual bypass source.
2. Manual bypass mode ensures that the UPS supplies the loads from manual
bypass source. The service personnel can perform maintenance process under
this mode without interrupting the loads. At this moment, the UPS is still
supplied by input power source. If the service personnel want to replace any
circuit board or component, please power off the UPS (Refer to 5-3) first.

Delta Electronics NH Plus Series Specifications

General

Brand	Delta Electronics
Model	NH Plus Series
Category	UPS
Language	English