KEPCO RA 19-4B - Manual (Page 5)

RA 19-4B 011409
1-1
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation and operation of the RA 19-4B plug-in rack
adapter (Figure 1-1) used with HSF Series power supplies, manufactured by Kepco, Inc., Flush-
ing, New York, U.S.A.
FIGURE 1-1. 1.2 GENERAL DESCRIPTION
Kepco Series RA 19-(X)B rack adapters are specifically designed for the installation of Kepco
HSF Series Power Supplies into 19-inch EIA standard equipment racks. The RA 19-4B Model
accommodates up to two 350 Watt (1/3 rack) and four 50W, 100W (1/8 rack) or 150W (1/6
rack) HSF power supplies (Figure 1-2).
NOTE: Model RA 19-5B can accommodate one 350 Watt modules and up to four 50 Watt (1/8
rack), 100 Watt (1/8 rack) or 150 Watt (1/6 rack) modules; contact Kepco Applications
Engineering for assistance with non-standard configurations.
The rack adapter is user-configurable for parallel, series, or independent power supply opera-
tion. Forced current sharing and OR’ing diodes for N+1 redundancy are built into the HSF power
supplies. User-configurable keying ensures that only the correct power supply can be installed
in a keyed slot.
FIGURE 1-2. RA 19-4B RACK ADAPTER WITH HSF POWER SUPPLIES INSTALLED
1.3 ELECTRICAL
An internal PCB back plate mounts connectors which interface directly with the power and sig-
nal connectors of HSF Series power supplies, permitting hot swappable insertion and extrac-
tion. The other side of the back plate assembly, available from the rear, contains the fixed power
and signal connections. Figure 1-3 illustrates the interconnections provided by the RA 19-4B
Rack Adapter. Dual input terminal blocks on the back plate assembly (Figure 1-4) distribute
input power to each of the three powers supplies.
All mechanical and electrical specifications are contained in the mechanical outline drawing:
Figure 1-5