Amount Of Heat Generated By The Inverter; Cooling System Types For Inverter Enclosure - Mitsubishi Electric 800 Series Instruction Manual

 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

 Installing the heat sink inside the enclosure
When the heat sink is installed inside the enclosure, the amount of heat generated by the inverter unit is shown in the following
tables.
Voltage
FR-E860-0.75K(0017)
FR-E860-1.5K(0027)
FR-E860-2.2K(0040)
600 V class
FR-E860-3.7K(0061)
FR-E860-5.5K(0090)
FR-E860-7.5K(0120)
NOTE
• The amount of heat generated shown assumes that the output current is the inverter rated current, the power supply voltage
is 575 V, 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)
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2. Installation and Wiring
2.3 Installation of the inverter and enclosure design
Inverter model
39
48
71
103
128
178
Amount of heat generated (W)
Standard model
LD ND
32
38
52
76
103
127
Ethernet model /
Safety communication model
LD ND
40 33
49 39
72 53
104 77
129 104
179 128