Mitsubishi Electric fr-e700 series, Инструкция по эксплуатации

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Enclosure design Installation
2 - 10
Cooling system types for inverter enclosure
From the enclosure that contains the inverter, the heat of the inverter and other equipment (trans-
formers, 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.
●
Cooling by natural heat dissipation from the enclosure surface (totally enclosed type)
●
Cooling by heat sink (aluminium fin, etc.)
●
Cooling by ventilation (forced ventilation type, pipe ventilation type)
●
Cooling by heat exchanger or cooler (heat pipe, cooler, etc.)
Cooling System Enclosure Structure Comment
Natural
cooling Natural ventilation
(Enclosed, open type)
I001000E
Low in cost and generally used, but the enclosure size
increases as the inverter capacity increases. For rela-
tively small capacities.
Natural ventilation
(Totally enclosed type)
I001001E
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.
Forced
cooling Heatsink cooling
I001002E
Having restrictions on the heatsink mounting position
and area, and designed for relative small capacities.
Forced ventilation
I001003E
For general indoor installation. Appropriate for enclo-
sure downsizing and cost reduction, and often used.
Heat pipe
I001004E
Totally enclosed type for enclosure downsizing.
Tab. 2-2: Cooling system types for inverter enclosure
heatsink
heat pipe