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Chapter 1
Overview
Power System
26
Power System
The power subsystem consists of the following components:
- 1 or 2 Power Distribution Component Assembly (PDCA)
- 1 Front End Power Supply (FEPS)
- Up to 6 Bulk Power Supplies (BPS)
- 1 power board per cell
- An HIOB power system
- Backplane power bricks
- Power monitor (PM) on the Universal Glob of Utilities (UGUY)
- And local power monitors (LPM) on the cell, the HIOB and the backplanes.
AC Power
The AC power system includes one or two PDCAs and one FEPS.
The FEPS is a modular, 2n+2 shelf assembly power system that can consume up to 17 KVA of power from A C
sources. The purpose of the FEPS chassis is to provide interconnect, signal and voltage busing between the
PDCAs and BPSs, between the BPSs and utility subsystem, and between the BPS and the system power
architecture. The FEPS subsystem comprises of three distinct modular assemblies: six BPS, two PDCAs, and
one FEPS chassis.
At least one 3-phase PDCA per Superdome cabinet is required. For redundancy a second PDCA per cabinet
may be provided. The purpose of the PDCA is to receive a single 3-phase input and output three 1-phase
outputs with a voltage range of 200 to 240 volts regardless of the AC source type. The PDCA also provides a
convenience disconnect switch/circuit breaker for service, test points and voltage present LED indicators. The
PDCA is offered as a 4-wire or a 5-wire PDCAdevice . Separate PDCA’s (PDCA-0 and PDCA-1) may be
connected to 4-wire and 5-wire input source simultaneously as long as the PDCA internal wiring matches the
wiring configuration of the AC source
The 4-wire PDCA is used in a phase to phase voltage range of 200 to 240 volts at 50/60 Hz. This PDCA is
rated for a maximum input current of 44 Amps per phase. The AC input power line to the PDCA is connected
with power plugs or is hardwired. When using power plugs, use a power cord [OLFLEX 190 (PN 6008044)
four conductor 6-AWG (16mm), 600 V, 60 Amp, 90°C, UL and CSA approved, conforms to CE directives
GN/YW ground wire].
Following recommend plugs for the 4-wire PDCA are:
- In-line connector: Mennekes ME 460C9, 3-phase, 4-wire, 60 Amp, 250 V, UL approved, color blue, IEC309-1
grounded at 9:00 o'clock.
- Panel-mount receptacle: Mennekes ME 460R9, 3-phase, 4-wire, 60 Amp, 250 V, UL approved, color blue,
IEC309-1 grounded at 9:00 o'clock.
The 5 wire PDCA is used in a phase-to-neutral voltage range of 200 to 240 Vac 50/60Hz. This PDCA is rated
for a maximum input current of 24 Amps per phase. The AC input power line to the PDCA is connected with
power plugs or is hardwired. When using power plugs, a power cord [five conductors, 10-AWG (6 mm),
450/475 V, 32 Amps, <HAR< European wire cordage, GN/YW ground wire]. An alternative is for the customer
to provide the power plug including the power cord and the receptacle. Recommended plugs: