KEPCO RA 19-3B - Manual (Page 32)

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RA 19-3B 011409
2.4.3 SERIES OPERATION
HSF power supplies may be connected in series to obtain higher output voltages, however the
maximum current must be limited to 35A, the maximum allowable through the internal ciruits of
the rack adapter. Series configurations can only be accomplished by external wiring of the I/O
mating connector. Blocking diodes are incorporated in the HSF power supplies. V+ of one sup-
ply must be connected to V– of the next supply at the DC OUTPUT terminal block.
DIP switches (positions 1 through 5) between series-connected supplies and at both ends of the
series-connected group must be set to OFF (open). Sensing can be either local or remote (PAR.
2.4.1.3). Local sensing requires external wiring (PAR.2.4.1.2). Figure 2-11 illustrates PS4, PS5
and PS6 connected in series.
FIGURE 2-11. SERIES CONFIGURATION, SIMPLIFIED DIAGRAM