HSF 300W, 600W or 1200W/1500W
with optional meter.

NOTE: The latest additions to Kepco's HSF Series Hot swappable plug-in modules are the 3U HSF 300W Series. These modules are are compatible with the same RA 19-4C Rack Adapter used for the HSF 600W and 1200W/1500W Series.

All HSF models are hot-swappable plug-in power supplies designed to be combined in an N+1 fault-tolerant power system. Built-in forced current sharing and or-ing diodes are provided for this purpose. HSF may also be used independently as a multi-output power supply.

Kepco's HSF are available in 1U and 3U sizes.

Six 1/6 rack HSF-PFC modules shown in
Kepco's Series RA 19-6B Rack Adapter.


• The 3U sizes are comprised of seven power groupings: 50W, 100W, 150W, 300W, 600W and 1200W/1500W, all of which include power factor correction (PFC).
  • The HSF models rated at 300W, 600W and 1200W/1500W use the RA 19-4C Rack Adapter which can hold up to four of these modules. These three groups include standard remote on-off and remote voltage programming capability. A front panel meter and current sensing signals to monitor individual current output are offered as options.
  • The HSF-PFC models rated at 50W, 100W, 150W use the RA 19(X)B Series Rack adapters which hold various combinations of 1/8-rack (50W and 100W) and 1/6-rack (150W) units. For combinations available refer to the RA 19 Rack Adapter.

Four HSF-1UR modules shown in
Kepco's Series RA 19-1U Rack Adapter.

• Kepco's low profile HSF-1UR models incorporate power factor correction (PFC) and are rated at 50W, 100W and 150W. All 1U models are mounted sideways so that up to 4 units may be mounted in the RA 19-1U housing.

• HSF 3U and 1U 50W, 100W and 150W Series are offered in 3.3V, 5V, 12V, 15V, 24V, 28V and 48V models.
• HSF 300W and 600W Series are offered in 5V (300W only), 12V, 15V, 24V, 28V and 48V models.
• HSF 1200W/1500W Series are offered in 24V, 36V and 48V models.

• All HSF modules are suitable as DC-DC converters, however note that Safety Agency approvals are valid only for a-c input. DC input voltage ranges for HSF models are as follows:
  • 3U, 50W, 100W: 125V - 370V d-c
  • 3U, 150W, 300W, 600W, 1200W/1500W: 110V - 370V d-c
  • 1U, 50W, 100W: 125V - 370V d-c
  • 1U, 150W: 130V - 370V d-c

Options

Four HSF 300W, 600W, 1200W/1500W modules
shown in Kepco's Series RA 19-4C Rack Adapter.

Kepco can also provide full service customized DC power distribution systems to match the power supply output(s) with your load(s). In addition to putting individual power supplies in parallel, parallel-redundant or series , entire RA 19 racks populated with HSF power supplies can be connected in parallel, parallel-redundant or series for when the need arises.

A full color brochure for Kepco's Hot Swap HSF and HSP models is available for download.

When HSF modules are paralleled, the module with the highest voltage setting automatically becomes the "master" As long as they are in the same voltage range, the other units are slaves, tracking the voltage setting of the master and equally sharing the load current.

The front panel voltage adjustment trimmer provides adjustment of the output voltage. HSF 300W, 600W and 1200W/1500W Models included remote voltage adjustment as a standard feature. A pair of test points provide access at the front panel to measure the voltage.

The 300W, 600W and 1200W/1500W units also incorporate a Reset button to restore the output if the unit shuts down after sensing an over- or undervoltage condition, thermal overload, or fan malfunction.

Input/output connections are through a 24 pin connector that plugs in to the rack adapter. All external connections are made through the rack adapter. Surface mount technology permits efficient component layout for minimum mounting space.

Most HSF are CE Marked per the Low Voltage Directive (LVD), EN60950.

NOTE: A video (MPG, file size 13.5M) of the NEBS GR-63-CORE earthquake and office vibration testing is available for viewing. A zip file (file size 12.1M) containing the MPG video can also be downloaded for off-line viewing.

WEIGHT

• RA 19-(X)B, RA 19-1U, RA 19-4C:  22 lbs, 10.0 Kg
• 50W:              4 lbs, 1.8 Kg
• 100W:            5 lbs, 2.3 Kg
• 150W:            5.5 lbs, 2.5 Kg
• 300W/600W1200W/1500W:            9.0 lbs, 4.1 Kg

Relevant Technical Articles

• Approaches to Implementing Fault Tolerant Power Systems
  Mark Kupferberg, VP, Manufacturing & Engineering (from Kepco Currents, Vol. 9, No. 2)