Bypass Mode Turn-Off Procedures (Single); Manual Bypass Mode Turn-Off Procedures (Single); Parallel Units Operation Procedures; Normal Mode Start-Up Procedures (Parallel) - Delta HPH-60K User Manual

7.1.7 Bypass Mode Turn-off Procedures (Single)

Execution of the following procedures will cut off all power supply. Before execution, please
make sure that all connected critical loads have been safely shut down.
For single input, please turn off the input breaker. For dual input, please turn off the input
1
breaker and bypass breaker.
Turn off the output breaker.
2
Ensure that the DC BUS voltage drops to below 20V.
3
Wait until the LCD display is off and ensure that the discharging process is completed
4
and the UPS is shut down.
Turn off each external battery cabinet's breaker.
5

7.1.8 Manual Bypass Mode Turn-off Procedures (Single)

Execution of the following procedures will cut off all power supply. Before execution, please
make sure that all connected critical loads have been safely shut down.
For single input, please turn off the input breaker. For dual input, please turn off the input
1
breaker and bypass breaker.
Turn off the output breaker.
2
Ensure that the DC BUS voltage drops to below 20V.
3
Wait until the LCD display is off and ensure that the discharging process is completed
4
and the UPS is shut down.
Turn off each external battery cabinet's breaker.
5
Turn off the manual bypass breaker.
6
7.2

Parallel Units Operation Procedures

7.2.1 Normal Mode Start-up Procedures (Parallel)

Before start-up, ensure that each breaker (including every external battery cabinet's
1
breaker) is in the OFF position.
Turn on each UPS's external battery cabinet's breaker.
2
Turn on each UPS's output breaker.
3
Ultron HPH Series UPS
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