Mitsubishi Electric FR-A802-P Instruction Manual page 24

Encasing multiple inverters and converter units
When multiple inverters and converter units are placed in the
same enclosure, generally arrange them horizontally as shown
in the figure on the right.
Do not place multiple products vertically. The exhaust air
temperature of the inverter and the converter unit may be
increased.
When mounting multiple inverters and converter units, fully take
caution not to make the surrounding air temperature of the
inverter and the converter unit higher than the permissible value
by providing ventilation and increasing the enclosure size.
Arrangement of the ventilation fan and inverter
Heat generated in the inverter is blown up from the bottom of
the unit as warm air by the cooling fan. When installing a
ventilation fan for that heat, determine the place of ventilation
fan installation after fully considering an air flow. (Air passes
through areas of low resistance. Make an airway and airflow
plates to expose the inverter to cool air.)
2.3.5
Protruding the heat sink
When encasing an inverter to an enclosure, the heat generated in the enclosure can be greatly reduced by protruding the
heat sink of the inverter.
When installing the inverter in a compact enclosure, etc., this installation method is recommended.
 Panel cutting
Cut the panel of the enclosure.
240
660
6-M10 screw
240
Hole
(Unit: mm)
Installation of the inverter and enclosure design
Converter
Inverter
unit
Converter
Inverter
unit
Enclosure
Arrangement of multiple inverters and converter units
Inverter
<Good example>
Arrangement of the ventilation fan and inverter
INSTALLATION AND WIRING
Converter
Inverter
unit
Inverter
<Bad example>
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