Mitsubishi FREQROL-E700, Manual

Page: 30 / 108

2-12
Above inverter
Heat is blown up from inside the inverter by the small fan built in the unit.
Any equipment placed above the inverter should be heat resistant.
Arrangement of multiple inverters
When multiple inverters are placed in the same enclosure, generally arrange them horizontally as shown below in the
figure (a). When it is inevitable to arrange them vertically to minimize space, take such measures as to provide guides
since heat from the bottom inverters can increase the temperatures in the top inverters, causing inverter failures.
When mounting multiple inverters, fully take caution not to make the surrounding air temperature of the inverter
higher than the permissible value by providing ventilation and increasing the panel size.
Arrangement of 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 install-
ing 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.)
Guide Guide
Enclosure Enclosure
Guide
(a) Arranged horizontally
Arrangement of multiple inverters
(b) Arranged vertically
Inverter
Inverter Inverter Inverter Inverter
Inverter
Inverter Inverter
<Good example>
Arrangement of the ventilation fan and inverter
<Bad example>