Cooling System Types For Inverter Panel - Mitsubishi Electric F700 Instruction Manual

Panel design
2.1.2

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)
Heatsink cooling
Forced
Forced ventilation
cooling
Heat pipe
26
Panel structure
Low in cost and generally used, but the panel size
increases as the inverter capacity increases. For
INV
relatively small 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
INV
capacity.
heatsink
Having restrictions on the heatsink mounting position
INV
and 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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