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Cooling System Types For Inverter Enclosure; Inverter Placement (installation Of Filterpack); Installation Of The Inverter (without Filterpack) - Mitsubishi Electric FR-F700PJ Instruction Manual

Air-conditioning inverter.
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1.4.2

Cooling system types for inverter enclosure

From the enclosure that contains the inverter, the heat of the inverter and other equipment (transformers, lamps, resistors,
etc.) and the incoming heat such as direct sunlight must be dissipated to keep the in-enclosure temperature lower than the
permissible temperatures of the in-enclosure equipment including the inverter.
The cooling systems are classified as follows in terms of the cooling calculation method.
1) Cooling by natural heat dissipation from the enclosure surface (totally enclosed type)
2) Cooling by heatsink (aluminum heatsink, etc.)
3) Cooling by ventilation (forced ventilation type, pipe ventilation type)
4) Cooling by heat exchanger or cooler (heat pipe, cooler, etc.)
Cooling System
Natural ventilation
(enclosed, open type)
Natural
cooling
Natural ventilation
(totally enclosed type)
Heatsink cooling
Forced
Forced ventilation
cooling
Heat pipe
1.5

Inverter placement (Installation of Filterpack)

1.5.1

Installation of the inverter (without Filterpack)

Enclosure surface mounting
Remove the front cover and wiring cover to mount the inverter to the surface. (Remove the covers in the directions of the
arrows.)
FR-F720PJ-0.4K, 0.75K
Front cover
Inverter placement (Installation of Filterpack)
Enclosure Structure
INV
INV
Heatsink
INV
INV
Heat pipe
INV
FR-F720PJ-1.5K to 3.7K
FR-F740PJ-0.4K to 3.7K
Front cover
Wiring cover
Comment
Low in cost and generally used, but the enclosure size
increases as the inverter capacity increases. For relatively
small capacities.
Being a totally enclosed type, the most appropriate for hostile
environment having dust, dirt, oil mist, etc. The enclosure size
increases depending on the inverter capacity.
Having restrictions on the heatsink mounting position and
area, and designed for relative small capacities.
For general indoor installation. Appropriate for enclosure
downsizing and cost reduction, and often used.
Totally enclosed type for enclosure downsizing.
FR-F720PJ-5.5K or higher
FR-F740PJ-5.5K or higher
Front cover
Wiring cover
1
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