KEPCO RA 19-1U Operator Manual - Manual (Page 40)

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RA 19-1U 020413
2.7 TERMINATIONS
All input, output and control terminations are located on the rear panel of the rack adapter (see
Figure 1-4).
2.8 COOLING
The 1U HSF power supplies mounted within the rack adapter are maintained within their operat-
ing temperature range by means of convection cooling. ALL OPENINGS AROUND THE RACK
ADAPTER CASE MUST BE KEPT CLEAR OF OBSTRUCTION TO ENSURE PROPER AIR
CIRCULATION. Care must be taken that the ambient temperature, which is the temperature of
the air immediately surrounding the rack adapter, does not rise above the specified limits for the
operating load conditions of the installed 1U HSF power supplies. Kepco recommends providing
additional space above and below the rack adapter where possible when the rack adapter is
fully populated.
2.9 INSTALLATION (Refer to “Mechanical Outline Drawing,” Figure 1-5.)
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. 2.9.1 below.
2.9.1 INSTALLING 1U HSF POWER SUPPLIES
Refer to Figure 1-1, for proper slot positions applicable to the RA 19-1U Rack Adapter. Insert 1U
HSF power supply in selected slot until power supply front panel is flush with rack adapter chas-
sis and secure with two front panel screws on power supply. Do not overtighten these screws:
max. torque is 2 in.-lbs (0.23 N x m).
NOTE: For severe shock and vibration environments each 1U HSF module must be secured
to the rack adapter with a screw, P/N 101-0408 (flat head, 6-32, 1/2 in. lg., 100° CSK)
through the bottom of the rack adapter chassis. Do not overtighten these screws:
max. torque is 10 in.-lbs (1.1N x m); side support for the populated rack adapter may
also be required.
The rack adapter is supplied with four cable clamps equipped with release levers that can be
snapped into holes provided in the rear panel (see Figure 1-4) to support the weight of the input,
output and signal cables.
2.10 WIRING INSTRUCTIONS
Interconnections between an a-c power source and a stabilized power supply, and between the
power supply and its load are as critical as the interface between other types of electronic equip-
ment. If optimum performance is expected, certain rules for the interconnection of source,
power supply and load must be observed by the user. These rules are described in detail in the
following paragraphs and in the operating instructions for 1U HSF Series power supplies.