Single Input To Dual Input Modification - Delta Modulon DPH Series User Manual

• Check the battery polarity when connecting the external battery cabinet(s) to the
UPS. Do not connect the battery polarity in reverse. For relevant information,
please refer to
• The UPS's PE terminal ( ) must be grounded. Please use ring-type terminals when
wiring.
WARNING:
1. Wrong wiring will cause damage to the UPS and electric shock.
2. For single input, the UPS will not work normally if the main AC power's
neutral (N) is not firmly connected or not connected to the UPS's AC Input
neutral (N) terminal.
For dual input, the UPS will not work normally if the main AC power's
neutral (N) and the bypass power's neutral (N) are not firmly connected
or not connected to the UPS's AC Input neutral (N) terminal and Bypass
Input neutral (N) terminal respectively. For the AC Input and Bypass Input's
neutral (N) terminals.
3. If the UPS is not grounded, the power boards and components might be
damaged after the UPS is powered on.
5.5.2

Single Input to Dual Input Modification

NOTE:
1. Only authorized Delta engineers or service personnel can modify single
input to dual input setup.
2. Please keep the removed components properly for future use. If you want
to modify the UPS from dual input into single input, please use the removed
screws and bus bars to connect the AC Input terminals (L1/ L2/ L3) and
Bypass Input terminals (L1/ L2/ L3).
The UPS default setting is single input. If you want to modify it into dual input, please
follow the steps below.
Delta UPS DPH 50-200kVA
5.6 External Battery Cabinet Connection Warnings
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