Section 1 - introduction, 1 scope of manual, 2 description – KEPCO MST Series User Manual
Page 11: Table 1-1. mst model parameters, 3 specifications, Scope of manual -1, Description -1, Specifications -1, Mst model parameters -1
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 ° C
55 ° C
65 ° C
Source
(max.)
SW
(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.