Manual Bypass Mode Start-Up Procedures (Single Unit) - Delta HPH-60K User Manual

7.1.4 Manual Bypass Mode Start-up Procedures (Single Unit)

From Normal Mode to Manual Bypass Mode (Single)
1
2
3
4
5
6
7
From Manual Bypass Mode to Normal Mode (Single)
1
2
3
4
Ultron HPH Series UPS
WARNING:
1. Please note that you can only turn on the Manual Bypass Breaker when the UPS
needs maintenance. This ensures that the supply of power to the critical loads
will continue. If you turn on the Manual Bypass Breaker during normal mode,
the inverter will shut down, the UPS will transfer from normal mode to manual
bypass mode, and the output won't be protected.
2. In manual bypass mode, the manual bypass supplies power to the critical loads
and maintenance personnel can perform maintenance without interrupting the
power supply to the critical loads.
3. When the UPS is in manual bypass mode, there is no high voltage inside the
UPS except the wiring terminal block and the Manual Bypass Breaker. Do not
touch the wiring terminal block and the Manual Bypass Breaker to avoid electrical
shock.
Press the OFF key (
want to shut down the UPS. After that, the BYPASS LED indicator (
illuminate.
Turn on the manual bypass breaker.
For single input, please turn off the input breaker. For dual input, please turn off the
input breaker and bypass breaker.
Turn off the output breaker.
Ensure that the DC BUS voltage drops to below 20V.
Turn off each external battery cabinet's breaker.
Turn on every external battery cabinet's breaker.
Turn on the output breaker.
For single input, please turn on the input breaker. For dual input, please turn on the
input breaker and bypass breaker.
( ) illuminates.
) once and press the DOWN key (
54
BYPASS LED indicator
) will