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Cooling System Types For Inverter Panel - Mitsubishi Electric FR-E720-0.1K(SC) Instruction Manual

Fr-e700 series.
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Installation of the inverter and enclosure design
1.4.2

Cooling system types for inverter panel

From the panel 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-panel temperature lower than the permissible
temperatures of the in-panel 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 heat sink (aluminum fin, 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)
Fin cooling
Forced
Forced ventilation
cooling
Heat pipe
10
Panel Structure
Low in cost and generally used, but the panel size increases
as the inverter capacity increases. For relatively small
INV
capacities.
Being a totally enclosed type, the most appropriate for hostile
environment having dust, dirt, oil mist, etc. The panel size
increases depending on the inverter capacity.
INV
Heatsink
Having restrictions on the heatsink mounting position and
INV
area, and designed for relative small capacities.
For general indoor installation. Appropriate for panel
downsizing and cost reduction, and often used.
INV
Heat pipe
Totally enclosed type for panel downsizing.
INV
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