Notes On Installation Of Inverter In An Enclosure - Mitsubishi Electric FR-A700 Technical Manual

3.6.5

Notes on installation of inverter in an enclosure

(1) Inverter placement
1) Clearances around the inverter
To ensure ease
maintenance, leave at least the shown clearances
around the inverter. At least the following
clearances are required under the inverter as a
wiring space, and above the inverter as a heat
dissipation space.
3.7K or less
100mm or more
*1
Inverter
10mm
or more
100mm or more
< front>
5.5K to 55K
100mm or more
*1
Inverter
50mm
or more
100mm or more
< front>
75K or more
200mm or more
Inverter
100mm
or more
200mm or more
< front>
Clearances around the inverter
*1 inverters can be installed side-by-side
E700 D700
(with 0mm clearance) in the surrounding air temperature
of 40°C or less.
*2 For replacing the cooling fan of the FR-A740-160K, FR-
F740-185K or more, 300mm of space is necessary in
front of the inverter.
of heat dissipation
*1
10mm
10mm Inverter
or more or more
< side >
*1
50mm Inverter
50mm
or more or more
< side >
*2
Inverter
100mm 50mm
or more or more
< side >
2) Inverter mounting orientation
Mount the inverter on a wall as specified. Do not
mount it horizontally or any other way.
and
3) Top of the 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.
The surrounding air temperature should be
50
center bottom and the center of left/right of the
inverter.
4) Arrangement of several inverters
When several inverters are placed in the same
enclosure, generally arrange them horizontally as
shown in the following figure (a).
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.
Inverter
Inverter
Enclosure
(a) Horizontal arrangement
When mounting several inverters, fully take
caution
temperature of the inverter higher than the
permissible value by providing ventilation and
increasing the panel size.
5) Placement 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 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.)
<Good example>
Placement of ventilation fan and inverter
536
SELECTION
or less at a distance of 50mm from the
Inverter Inverter
Guide Guide
Inverter Inverter
Enclosure
(b) Vertical arrangement
Arrangement of several inverters
not to make the
Inverter
When it is
Guide
surrounding air
Inverter
<Bad example>