KEPCO RA 19-1U Operator Manual - Manual (Page 9)

RA 19-1U 020413
1-1
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation and operation of the RA 19-1U plug-in rack
adapter (Figure 1-1) used with 1U HSF Series power supplies, manufactured by Kepco, Inc.,
Flushing, New York, U.S.A. Unless otherwise noted, 1U HSF refers to the following models -1U,
-1UR, -1URT, -1URC, -1URX and -1URY.
FIGURE 1-1. 1.2 GENERAL DESCRIPTION
Kepco RA 19-1U rack adapters are specifically designed for the installation of Kepco 1U HSF
Series Power Supplies into 19-inch EIA-RS-310D standard equipment racks. The RA 19-1U
Model accommodates up to four 50W, 100W or 150W 1U HSF power supplies (Figure 1-2).
The rack adapter is user-configurable for parallel, series, or independent power supply opera-
tion. Up to four identical units may connected in parallel. Multiple rack adapters may be paral-
leled for additional current capacity. Forced current sharing and OR’ing diodes for N+1
redundancy are built into the 1U HSF power supplies. Redundant a-c inputs are provided to
deliver independent source power to each power supply in a redundant pair. User-configurable
keying ensures that only the correct power supply can be installed in a keyed slot.
FIGURE 1-2. RA 19-1U RACK ADAPTER WITH 1U HSF POWER SUPPLIES INSTALLED
1.3 MECHANICAL
The rack adapter is equipped with mounting ears for mounting in EIA-RS-310D standard 19-
inch racks. For mounting in non-standard racks, consult Kepco Applications Engineering. The
rack adapter is not configured for slides. Optional blank filler panels (see Table 1-2) are avail-
able if the full complement of power supplies is not utilized.
Mechanical dimensions, material, and finish of the RA 19-1U Rack Adapter is provided in Figure
1-5.
1.4 ELECTRICAL
An internal PCB back plate mounts connectors which interface directly with the power and sig-
nal connectors of 1U HSF Series power supplies, permitting hot swappable insertion and
extraction. 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
19-1U Rack Adapter. Dual input terminal blocks on the back plate assembly (Figure 1-4) dis-
tribute input power to each of the four powers supplies. Figure 1-6 is a schematic diagram of
the RA 19-1U rack Adapter.
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PS1 PS2 PS3 PS4