Introduction, 1 scope of manual, 2 description – KEPCO HSF 300W Series (suffix A and AM) Operator Manuals User Manual

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HSF(A) 300W 101013

INTRODUCTION

1.1

SCOPE OF MANUAL

This Operator's Manual covers the installation and operation of the Kepco HSF A and HSF AM

300W Series of Switching Power Supplies. Basic models are identified by the suffix “A” following

the model number; models with the suffix “AM” include an integral voltage/current meter. For ser-

vice information, write directly to: Kepco Inc., 131-38 Sanford Avenue, Flushing, New York,

11355, U.S.A. Please state Model Designation and Serial Number of your HSF Power Supply.

This information can be found on the nameplate of the unit.

1.2

DESCRIPTION

The Kepco HSF A and AM 300 Watt Series are hot swappable, high frequency switching, plug-in

power supplies that are completely interchangeable with the metered HSF AM Series, as well as

with Kepco’s earlier 300 Watt HSF Series (non A). When integrating A and non A models refer to

PAR’s. 3.5 and 3.7.2.2 regarding isolation of the return signal of the RC and PF features. Unless

otherwise noted, all data supplied herein for A models applies to AM models as well.

Six models may be selected for outputs of 5V, 12V, 15V, 24V, 28V or 48V. They employ forward

conversion and power factor correction and are designed to operate in a fault tolerant power sys-

tem. Input voltage range is single phase 85-265V a-c (47-63Hz) or 120-330V d-c. Input voltage

which is out of specification may cause unit damage. Safety standards apply when input voltage is

within 100-240V a-c (50-60Hz). A built-in current balancing circuit and OR-ing diodes allow config-

uration for hot-swap and parallel-redundant N+1 operation.

HSF A (without meter) and AM Models (with meter) use the HSF output to power the VDC ON

indicator and internal alarm relay. A minimum HSF output voltage is needed to maintain function-

ality for these components. For HSF AM models a minimum output is also needed to power the

meter. Model HSF 5-60AM is the exception, requiring no minimum output to power the internal

relay and meter, and a minimum output of around 3V d-c to power the VDC ON/ALARM indicator.

These power supplies are designed to be used with Kepco's Series RA 19-4C rack adapters. The

RA 19-4C rack adapter accepts up to four 300W modules. All input/output connections are

through a 24-pin connector that plugs in to the rack adapter. All external connections described in

the following paragraphs are made through the rack adapter’s I/O connector (see Figure 1).

FIGURE 1. HSF (A, AM) REAR PANEL CONNECTOR AND RA 19-4C RACK ADAPTER I/O CONNECTOR

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12 11 10
15
18

14 13

21 20 19