Frequency Conversion Mode Start-Up Procedures - Delta Ultron HPH Series User Manual

6.2.6 Frequency Conversion Mode Start-up Procedures

WARNING:
1. For parallel units, please follow 6.2.3 Bypass Mode Start-up Procedures to
turn on each parallel UPS. After confirming that parallel operation can be
normally run, follow the following procedures step by step.
2. For parallel units, ensure that every operation procedure mentioned below
is synchronized to all parallel UPSs.
3. For parallel application, if you just want to operate a specific UPS but not
all parallel ones, please contact Delta service personnel.
1. Ensure that the manual bypass breaker is in the OFF position.
2. Switch ON each external battery cabinet's breaker.
3. Single Input: Switch ON the bypass breaker, the input breaker and the output breaker.
Dual Input: Switch ON the bypass breaker, the input breaker, and the output breaker.
4. After you switch ON the bypass breaker and the input breaker, the UPS will start up,
the main screen will appear
illuminate yellow.
start to charge the batteries.
will transfer to run in bypass mode, the screen will show as follows, and the tri-color LED
indicator will illuminate yellow.
(Figure 6-17: ECO Mode Screen)
after about
After the UPS finishes establishing DC BUS voltage,
If the bypass voltage is within the normal range, the UPS
25 seconds and the tri-color LED indicator will
60
the charger will