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PDUMH20AT,
PDUMH20ATNET
PDUMNH20AT1
PDUMH20ATS
PDUMH15AT,
PDUMH15ATNET
PDUMNH15AT1
PDUMH15ATS
3.2D
B
A
B
A
6
3. Installation (continued)
3.2D
Connect PDU Input Plugs: (See
the Configuration and Operation section for
more information.) Connect the Primary
input plug
A
to a preferred source of
grounded 120V AC power, such as a
SmartOnline
™
UPS System. The UPS system
must not share a circuit with a heavy
electrical load (such as an air conditioner or
refrigerator). Under normal operating
conditions, the PDU will distribute AC power
from the Primary input source. Connect the
Secondary input plug
B
to an alternative
source of grounded 120V AC power, such as
a redundant SmartOnline UPS System. The
UPS system must not share a circuit with a
heavy electrical load (such as an air
conditioner or refrigerator). Do not plug the
Secondary input into the same power source
as the Primary input. The PDU will distribute
AC power from the Secondary input only if
the Primary input becomes unavailable.
Note: Immediately after the PDU is connected to
live AC power, you may notice a series of soft
clicking sounds emitted by electrical relays within
the PDU. The relays may also click occasionally
during the operation of the PDU. This is normal.
21-02-124 933E0A.indb 621-02-124 933E0A.indb 6 3/25/2021 2:19:07 PM3/25/2021 2:19:07 PM
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