KEPCO RA 19-1U Operator Manual - Manual (Page 23)

RA 19-1U 020413
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2.4.2 PARALLEL OPERATION
Up to four Identical 1U HSF power supplies can be connected in parallel to provide redundant
operation or increased output current to a common load. Blocking diodes are incorporated in
HSF -1U and -1UR power supplies. The power leads must be connected in parallel externally
(see PAR. 2.10.4.2). (Configurations using internal parallel busing are also possible; consult
Kepco’s Applications Engineering for details.) Three things must be considered when configur-
ing the rack adapter for parallel operation:
• DC OUTPUT
• CURRENT SHARE
• SENSE
2.4.2.1 PARALLEL DC OUTPUT CONNECTIONS
The power leads must be connected in parallel externally (see PAR. 2.10.4.2). DC Output V(+)
and V(–) must be connected in parallel at the DC OUTPUT terminal block (see Figures 2-5
through 2-10).
2.4.2.2 PARALLEL CURRENT SHARE CONNECTIONS
The Current Share pins of the 1U HSF power supplies must be connected together for parallel
operation. This can be done using either the rear panel DIP switches to configure adjacent slots
in parallel (PAR 2.4.2.2.1), or externally by wiring the I/O mating connector for configuring slots
1 and 4 (PAR. 2.4.2.2.2).