Kepco MST Series Manual de usuario descargar pdf (Pagina 11)

MST SERIES 061813 1-1

SECTION 1 - INTRODUCTION

1.1 SCOPE OF MANUAL

This manual contains instructions for the installation, operation, and maintenance of the MST

series of 200 Watt, voltage and current stabilized d-c power supplies (power modules) manufac-

tured by Kepco, Inc., Flushing, New York, U.S.A.

1.2 DESCRIPTION

The Kepco MST 200 Watt Series (Figure 1-1) consists of eight, single-output models as shown

in Table 1-1. MST Series Power Modules employ a switch mode preregulator for high efficiency

and power density, with linear output stabilization for accuracy and resolution. MST Power Sup-

plies (Modules) are of a modular, plug-in design whose 7" x 1-3/4” cross-section allows nine

independently controlled modules to be mounted abreast in a standard (19" x 7" x 20.9") Kepco

Model RA 55 rack adapter or 5 modules in a standard (9.6” x 7” x 20.9”) Kepco Model CA 400

case.

The MST Power Module is controlled digitally via the IEEE 1118 2-wire serial bus (“Bitbus”) with

12 bits of resolution over the entire voltage and current ranges. Voltage and current are dis-

played on LED panel meters, and read back over the control bus with an accuracy of 0.06%.

Operating status is displayed on front panel LED indicators and read back over the bus.

An MST Power Module can be installed without powering down the system. Employing cur-

rent-sharing for parallel operation, they may be “hot-swapped” for redundant (N+1) applications.

MST Power Supplies can be operated with universal a-c input power sources (90-264Vac,

47-63Hz) and incorporate power factor correction (0.98) to meet EN 61000-3-2. MST Power

Modules can also be configured in series for higher than rated output voltages (500V d-c maxi-

mum).

1.3 SPECIFICATIONS

The MST Series electrical and mechanical specifications are listed in Tables 1-1 and 1-2.

TABLE 1-1. MST MODEL PARAMETERS

MODEL

OUTPUT

VOLTAGE

Adjustment

Range

(V d-c)

OUTPUT CURRENT

Maximum (Amps)

RIPPLE

(mV p-p)

NOISE

(mV p-p)

EFFICIENCY

(100% Load

120V a-c)

45° C55° C65° C

Source

(max.)

(Spike)

20MHz

MST 6-20M 0-6 20 16 12 2.5 5 50 51%

MST 15-12M 0-15 12 9.6 7.2 5 10 100 61%

MST 25-8M 0-25 8 6.4 4.8 5 10 100 62%

MST 36-5M 0-36 5 4.0 3.0 5 10 100 63%

MST 55-3.5M 0-55 3.5 2.8 2.1 5 10 100 64%

MST 75.2.5M 0-75 2.5 2.0 1.5 7.5 15 150 64%

MST 100-2M 0-100 2.0 1.6 1.2 7.5 15 150 66%

MST 150-1.2M 0-150 1.2 1.0 0.7 7.5 20 200 66%

FIGURE 0-1.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 43 44

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