Amount Of Heat Generated By The Inverter; Cooling System Types For Inverter Enclosure - Mitsubishi Electric FR-A872-E Instruction Manual

Especially when impacts are applied repeatedly, caution must be taken because such impacts may break the installation feet.
Countermeasure
• Provide the enclosure with rubber vibration isolators.
• Strengthen the structure to prevent the enclosure from resonance.
• Install the enclosure away from the sources of the vibration.
2.3.2

Amount of heat generated by the inverter

When the heat sink is installed inside the enclosure, the amount of heat generated by the inverter unit and converter unit is
shown in the following tables.
Converter FR-CC2-N[]
450K
500K
560K
630K
Inverter FR-A872-[]
05690
06470
07150
NOTE
• The amount of heat generated shown assumes that the output current is the inverter rated current, and the carrier frequency
is 1 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.)
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2. INSTALLATION AND WIRING
2.3 Installation of the inverter and enclosure design
Amount of heat generated (W)
690 V input
3360 3350
3600 3590
4030 4020
4350 4340
Amount of heat generated (W)
690 V input
SLD ND
5060 4580 4750
5760 5060 5420
6390 5760 6030
575 V input
575 V input
SLD ND
4280
4750
5420