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, 350W, 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 350W modules and 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), 1/6-rack (150W) and 1/3-rack (350W) 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 (3.3V and 28V Models for 50W (1U) coming soon)
• 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.

Options

• Contact factory for details regarding options not listed on the associated BUY NOW page.
• Option M: (HSF 300W, 600W and 1500W models only) Adds front panel meter which displays either voltage or current using a front panel mode switch and includes external current monitoring.
• Option MZ: (HSF 300W, 600W and 1500W models only) Adds front panel meter and also allows output voltage adjustment down to 0V (logic 0, 0 to -0.4V d-c) while maintaining full functionality for LED, alarm relay and meter.
• Option C: (3U and 1U 50W, 100W, and 150W Models only) Allows current monitoring via an internal sense resistor (this is standard on 300W, 600W and 1200/1500W models).
• Option T: (50W, 100W and 150W Models only) Offers improved efficiency, lighter weight and a 50W, 28V Model.
• Option X: (3U and 1U 50W, 100W, and 150W Models only) Allows remote on-off control. (this is standard on 300W, 600W and 1200/1500W models).
• Option Y: (50W, 100W, and 150W Models only) Includes both current monitoring and remote on-off.
• Option W: (non-meter 600W Models only): offers improved output adjustment range while maintaining full functionality for LED, and alarm relay. Allows users to standardize on a single model for multiple output voltage applications.

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

A full color brochure for Kepco's Hot Swap HSF and HSP models is available for download (PDF file - 250K). Separate PDF brochures are available for the 350W models and for the 600W/1200W/1500W models

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, 350W, 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. The 3.3V and 5V 350W units provide two 24-pin connectors for current distribution.

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
• 350W:            7 lbs, 3.2 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)