Delta Modulon DPH Series User Manual page 78

To avoid UPS failure, the input of the UPS must be Y connection.
and you require that the VNG of the UPS should be zero, we suggest that you install
an isolation transformer in front of the input side of the UPS, and connect the isolation
transformer's secondary neutral (N) and the ground (
transformer.
in positive phase sequence. Please refer to 5.5.3 Single Unit Wiring and 5.5.4 Parallel
Units Wiring for wiring information.
For external battery cabinet connection, please check the battery polarity. Do not con-
nect the batteries in reverse. Please refer to 5.6 External Battery Cabinet Connection
Warnings.
Connect the external battery cabinet's grounding terminal (
terminal ( ). Please refer to Figure 5-15 and Figure 5-19 for grounding information.
The UPS's grounding terminal (
nals when wiring. For the location of the UPS's grounding terminal (
Figure 5-12.
The UPS default setting is single input. If you want to modify it into dual input, please follow
the procedures below.
1
Follow Figure 5-4
Bypass Input Cooper Bars and AC Input Cooper Bars shown in Figure 5-5 and Figure
5-6.
Modulon DPH Series
WARNING:
1. Wrong wiring will cause damage to the UPS and electric shock.
2. If the UPS is not grounded, the power boards and components might be
damaged after the UPS is powered on.
WARNING:
Only authorized Delta engineers or service personnel can modify
single input/ dual input setup.
) must be grounded and please use ring-type termi-
5-8
) to the nearest place of the
) to the UPS's grounding
), please refer to
),
-