Name: Delta Ultron HPH series
Brand: Delta
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3-24

Ultron HPH Series

3.2.8 Online Mode_ Dual Input_ Parallel Units

In online mode (parallel), the total loads will be equally shared by the 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 3-23

for the path of electrical power through the parallel UPSs in online mode.

MAIN

LOAD

MAIN

BYPA.

Batteries

Rectifier Inverter

Static Switch

Batteries

Rectifier Inverter

Static Switch

(Figure 3-23: Online Mode Diagram_ Dual Input Parallel Units)

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Delta Ultron HPH series Specifications

General