Cooling System Types For Inverter Enclosure - Mitsubishi Electric 800 Series Hardware Instruction Manual

 Installing the heat sink outside the enclosure
When the heat sink is installed outside the enclosure, the amount of heat generated by the inverter unit and the converter unit
is shown in the following tables. (For the details on protruding the heat sink outside the enclosure, refer to
Converter FR-CC2-
Heat sink section
H[]
(outside of enclosure)
315K 1640
355K 1820
400K 2130
450K 2380
500K 2660
560K 3080
630K 3440
Inverter FR-A842-[]
SLD
315K 4060
355K 4680
400K 5160
450K 6020
500K 6860
NOTE
• * The amount of heat generated shown assumes that the output current is the inverter rated current, and the carrier frequency
is 2 kHz.
2.3.3

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.
• Cooling by natural heat dissipation from the enclosure surface (totally enclosed type)
• Cooling by heat sink (aluminum fin, etc.)
• Cooling by ventilation (forced ventilation type, pipe ventilation type)
• Cooling by heat exchanger or cooler (heat pipe, cooler, etc.)
Amount of heat generated (W)
Control section (inside of
enclosure)
710
780
920
1020
1140
1320
1480
Heat sink section (outside of enclosure)
LD ND
3530 3110
4060 3570
4530 3950
5140 4550
6040 5180
Amount of heat generated (W)
Control section (inside of enclosure)
HD SLD
2730 1740 1520
3080 2010 1740
3450 2210 1950
3950 2580 2200
4540 2950 2590
2.3 Installation of the inverter and enclosure design
page 30.)
LD ND HD
1340 1170
1530 1330
1700 1480
1950 1700
2220 1950
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