6.5.2 Single Unit Wiring - Delta HPH-60K User Manual

The grounding cable of the external battery cabinet must be connected to the (
nal of the battery terminal block.
The UPS default setting is single input. If there is an intention to change the UPS into dual
Please check whether the electric potential of the neutral line (N) of the bypass source is
the same as that of the neutral line (N) of the main AC source. If they do not share a com-
mon neutral line system, add an isolation transformer to the bypass source.
The input of the UPS must be a Y connection, and the neutral line (N) must be connected
to avoid UPS failure. Do not connect the neutral line (N) of the UPS with the ground termi-
nal ( ).
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 UPS neutral (N)
with the ground (
on the UPS's rating label. When connecting the utility input power to the UPS, make sure
it is in positive phase sequence.
Connect the external battery cabinet's grounding terminal to the grounding terminal (
of the UPS's battery terminal block. Do not connect the grounding terminal of the external
battery cabinet to any other grounding system.
The ground terminal (
nal for wiring.
WARNING:
1. Incorrect wiring will lead to severe electric shock and damage to the UPS.
2. The UPS will not work normally if the input power's neutral (N) is not firmly

6.5.2 Single Unit Wiring

NOTE:
Single Input (Single Unit)
When there is only one AC power source, single unit wiring procedures are as follows.
Open the UPS's front door, remove the front and rear panels, and you will see the
1
wiring terminal block shown in Figure 6-6~6-8.
).
) of the UPS must be grounded, and please use ring-type termi-
connected or not connected to the AC Input Block's neutral (N) terminal.
Prior to wiring, please read 6.5.1 Precautions Prior to Wiring
Chapter 6
35
Installation and Wiring
) termi-
),
)