Delta Ultron HPH series User Manual

3-10
Ultron HPH Series
3.1.9 Online Mode_ Single Input_ Parallel Units
In online mode (parallel), the total loads will be equally shared by parallel UPSs. If one of
the parallel units fails and its load is less than the total capacity of the remaining parallel
units, the failing UPS's output will be switched off and its load will be equally shared by
the remaining parallel units. If the failing UPS's load is larger than the total capacity of the
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by bypass power. During online mode, each UPS’s tri-color LED illuminates green and each
UPS’s LCD shows the text ‘On-Line’ in the upper right corner. Please refer to Figure 3-9 for
the path of electrical power through the parallel UPSs in online mode.
MAIN
LOAD
MAIN
1
2
Q1
Q2
Q4
Q3
Batteries
Rectifier Inverter
Static Switch
Q1
Q2
Q4
Q3
Batteries
Rectifier Inverter
Static Switch
Q5
Q5
(Figure 3-9: Online Mode Diagram_ Single Input Parallel Units)

Delta Ultron HPH series Specifications

General

Brand	Delta
Model	Ultron HPH series
Category	UPS
Language	English