Arrangement Of Multiple Converter/Inverter Units; Arrangement Of The Ventilation Fan And Converter - Mitsubishi Electric FR-XC-18.5K-PWM Instruction Manual

Arrangement of multiple converter/inverter units
When multiple converter/inverter units are placed in the
same enclosure, generally arrange them horizontally as
shown in the figure (a). When it is inevitable to arrange
them vertically to minimize space, take such measures as
to provide guides since heat generated in the units in
bottom row can increase the temperatures in the units in
top row, causing the failure of the units in top row.
When installing multiple units, fully take measures to
prevent the surrounding air temperature of the units from
being higher than the permissible value by providing
ventilation or increasing the enclosure size.
NOTE
• The FR-XCL and FR-XCB reactors also generate heat. To store the FR-XCL or FR-XCB in the enclosure that contains the
converter and inverter(s), measures against temperature rises are required as is the case with the converter and inverter(s).
Arrangement of the ventilation fan and converter
The air warmed by the heat generated inside the converter
goes up to the top of the enclosure. 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 converter to cool air.)
Installation of the converter and enclosure design
Converter Inverter
Enclosure
(a) Horizontal arrangement
converter
<Good example>
converter
<Good example>

Arrangement of the ventilation fan and converter

INSTALLATION AND WIRING
Inverter Inverter
Guide Guide
Guide
Converter Converter
Enclosure
(b) Vertical arrangement
converter
<Bad example>
converter
<Bad example>
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