Frequency Conversion Mode Turn-Off Procedures - Delta Ultron HPH Series User Manual

4. Please log in as an Administrator. For the Administrator password, please contact Delta
service personnel. After login, ensure that you are in the Administrator login
5. Click SETUP → Mode Setting → On-Line.
6. Single Input: Switch OFF the bypass breaker, input breaker and output breaker.
Dual Input: Switch OFF the bypass breaker, input breaker and output breaker.
7. The UPS will discharge DC bus voltage, and the tri-color LED indicator will illuminate yellow.
After discharging is completed, the UPS will shut down, and the touch panel and the tri-color
LED indicator will be off.
8. Switch OFF every external battery cabinet's breaker.

6.3.6 Frequency Conversion Mode Turn-off Procedures

WARNING:
1. For parallel units, ensure that every operation procedure mentioned below is
synchronized to all parallel UPSs.
2. For parallel application, if you just want to operate a specific UPS but not all
parallel ones, please contact Delta service personnel.
Ultron HPH Series
(Figure 6-36: Select On-Line Mode)
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status.