10
HSF-A 1500W 010421
3.9
RETAINING LATCHES
HSF-A 1500W series power supplies are provided with (2) retention latches located at each side
of the bottom edge of the front panel (see Figure 6). These latches work in conjunction with the
RA 19-4C rack adapters to prevent unauthorized or inadvertent module extraction from an operat-
ing power system. The latch is engaged by loosening the cap-head screw approximately 1/2 turn
CCW (use 5/32” hex key) and sliding the latch down to the bottom of the slot, then retightening the
cap-head screw CW until snug. DO NOT OVERTIGHTEN! To release, follow the same procedure,
except lift the latch to the top of the slot. Be sure to move the latch completely up or down to
ensure full engagement and disengagement of the latching mechanism. When the HSF-A power
supply is not installed in its plug-in rack adapter, it is recommended that the latch be secured in
the open (up) position to prevent damage.
NOTE: Retaining latches must
not
be used to secure the HSF power supply in the rack
adapter for shipping purposes. For shipping HSF units installed in the rack adapter, the
units must be secured by two flat head #8 screws (Kepco P/N 101-0188): FLP0, 8-32 X
0.375, ST at the top of the rack adapter.
4.
LOAD CONNECTION
Connect the load to (+) and (–) terminals at the rear panel of the Rack Adapter. See Figure 8 for
the proper way to connect multiple loads.
FIGURE 8. CORRECT AND INCORRECT METHODS OF LOAD CONNECTION
5.
CONNECTING MULTIPLE POWER SUPPLIES
All connections to multiple HSF-A power supplies must be made via the I/O mating connectors at
rear of the Rack Adapter and/or by the Rack Adapter DIP switches. These connections, including
the configuration of the internal HSF DIP switch, are described in the Rack Adapter Instruction
manual, and include:
•
Using parallel configurations (for increased current or redundancy)
•
Using series configurations (for increased voltage).
•
Using open-on-fail or close-on-fail alarm schemes with multiple power supplies.
