User's Manual

Chapter 2 System Description
2.3.15 HPA Cabinet Power Distribution Unit (PDU)
The PDU, which is mounted at the
bottom of the HPA cabinet, receives 208 - 240 VAC from
the building/site electrical service panel or AC disconnect device and distributes the required
power to a number of cabinet components – see Table 2-3
.
The PDU is comprised of eleven (11) circuit breakers, six (6) surge protectors with two (2)
LED indicators and two (2) contactors. Eleven (11) sets of terminal blocks allow for input
and output AC power conductors to be connected to the PDU.
The PDU front panel provides access to the circuit breakers and AC LED indicators, while the
rear panel provides access to surge protectors, AC input and output terminal blocks, as well
as the contactor’s terminal blocks.
The PDU also includes two (2) contactors, which disable AC power to each set of four (4)
HPA PSU’s when there is no air flow in the HPA cabinet.
Figure 2-26 HPA Cabinet PDU
PICTURE TBD
SX03-30000-01-M01
2-28