Mitsubishi Electric 800 Series Instruction Manual page 39

When installing multiple inverters, fully take measures to prevent the surrounding air temperature of the inverter from being
higher than the permissible value by providing ventilation or increasing the enclosure size.
Inverter
Enclosure
(a) Horizontal arrangement
 Arrangement of the ventilation fan and inverter
Heat generated in the inverter is blown up from the bottom of the unit as warm air by the cooling fan. When installing a
ventilation fan for that heat, determine the place of ventilation fan installation after fully considering an air flow. (Air passes
through areas of low resistance. Make an airway and airflow plates to expose the inverter to cool air.)
Inverter
<Good example>
Arrangement of the ventilation fan and inverter
38
2. Installation and Wiring
2.3 Installation of the inverter and enclosure design
Inverter
Inverter Inverter
Guide Guide
Inverter Inverter
Enclosure
(b) Vertical arrangement
Arrangement of multiple inverters
Inverter
<Bad example>
Guide