KEPCO RA 19-4C Operator Manual - Manual (Page 48)

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RA 19-4C 121013
2.8 INSTALLATION (Refer to “Mechanical Outline Drawing,” Figure 1-6.)
The rack adapter mounts directly to EIA-RS 310D standard 19" racks via the two mounting ears;
two screws are required per mounting ear for proper support.
CAUTION
RACK ADAPTER SHOULD BE MOUNTED BEFORE INSTALLING POWER SUPPLIES.
Provide adequate clearance around case and ensure that the temperature immediately sur-
rounding the unit does not exceed the maximum specified ambient temperature for the operat-
ing conditions of the installed power supplies. For severe shock or vibration environments, see
NOTE to PAR. 2.9 below.
2.8.1 INSTALLING OPTIONAL PROTECTIVE COVER (Refer to Figure 2-20.)
A clear plastic cover (Kepco P/N 137-0145) is available as an accessory to protect the rear ter-
minals against accidental contact. Four standoffs (minimum) (Kepco P/N 104-0385) are
required for installation.
1. Remove screws and cable clamps as necessary from mounting points “A” (see Figure 2-20).
A minimum of four standoffs must be installed. Save all screws and clamps removed.
2. Choose standoff locations to accommodate cable routing and install standoffs at mounting
points A (Figure 2-20). Use of suitable thread-lock adhesive on standoff threads is recom-
mended. If cable clamps need to be reused, use standoff to secure clamp to backplate.
3. Insert ten protective cover tabs (three each at top and bottom and two at each side) into cor-
responding backplate slots. Rectangular cutouts are provided at the edge of the protective
cover for cable exit. Round (9/16 in. diameter) holes are provided for strain relief/cable sad-
dle clamps.
4. Peel and remove scratch-resistant film from protective cover.
5. Secure protective cover to standoffs using screws removed in step 1.
2.8.2 INSTALLING OPTIONAL BUS BAR.
Bus bars which connect output terminals for parallel or series operation are available as acces-
sories (see Table 1-2).
1. Remove and save the hex screw and washer from each output terminal to be connected
together (bas bars can only be connected to terminals of adjacent slots.
CAUTION: Failure to remove cable clamp can result in the clamp being crushed
between backplate and bus bar, causing the output to be shorted to ground.
2. Remove any cable clamps from backplate that maybe covered by the bus bar, or interfere
with bus bar installation.
3. Install bus bar across applicable terminals and secure it as shown with the previously
removed hardware. See Figure 2-20 for parallel, or Figure 2-21 for series connections.
4. Connect output cables to bus bar studs using hex nut (see Table 1-2).
CAUTION: Ensure current does not exceed 100 Amperes per stud.