Start-Up Procedures; Online Mode Start-Up Procedures - Delta Ultron HPH Series User Manual

battery type meet the UPS's requirements.
5. For parallel units, ensure that every operation procedure mentioned below is synchronized to
all parallel UPSs.
6. For parallel application, if you just want to operate a specific UPS but not all parallel ones,
please contact Delta service personnel.
 Pre Turn-off Warnings for Parallel Units
1. If you want to turn off one of the parallel UPSs, please check whether the remaining parallel
units' total capacity exceeds the total critical loads. If the remaining parallel units' total capacity
is less than the total critical loads, all parallel units will shut down due to overload.
2. If you perform turn-off procedures for all parallel UPSs, all power will be completely cut off.
Please make sure that the critical loads connected to the parallel UPSs have already been
safely shut down before you perform the turn-off procedures.

6.2 Start-up Procedures

6.2.1 Online Mode Start-up Procedures

WARNING:
1. For parallel units, please follow
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 input breaker, the UPS will start up, the main
screen will appear after about 25 seconds and the tri-color LED indicator will illuminate yellow.
Please see the below figure.
Chapter 6.2.3 Bypass Mode Start-up
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