KEPCO RA 19-4B - Manual (Page 31)

RA 19-4B 011409
2-21
2.5 TERMINATIONS
All input, output and control terminations are located on the rear panel of the rack adapter (see
Figure 1-4).
2.6 COOLING
The HSF power supplies mounted within the rack adapter are maintained within their operating
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 HSF power supplies. Kepco recommends providing
additional space above and below the rack adapter where possible when the rack adapter is
fully populated.
2.7 INSTALLATION (Refer to "Mechanical Outline Drawing," Figure 1-5.)
The rack adapter mounts directly to EIA standard 19" racks via the two mounting ears; two
screws are required per mounting ear for proper support.
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.
CAUTION
RACK ADAPTER SHOULD BE MOUNTED BEFORE INSTALLING POWER SUPPLIES.
2.8 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 HSF Series power supplies.
2.8.1 SAFETY GROUNDING
Local, national and international safety rules dictate the grounding of the metal cover and case
of any instrument connected to the a-c power source, when such grounding is an intrinsic part of
the safety aspect of the instrument. The instructions below suggest wiring methods which com-
ply with these safety requirements; however, in the event that the specific installation for the
power system involves differences with the recommended wiring, it is the customer's responsi-
bility to ensure that all applicable electric codes for safety grounding requirements are met.