When mounting two or more inverters
Horizontal layout is recommended when two or more inverters are to be installed in
the same unit or panel. If it is necessary to mount the inverters vertically, install a
partition plate or the like between the inverters so that any heat radiating from an
inverter will not affect the one/s above. As long as the ambient temperature is 40°C
or lower, inverters can be mounted side-by-side without any gap between them (only
for inverters with a capacity of less than 5.5 kW).
When employing external cooling
At the shipment time, the inverter is set up for mount inside your equipment or panel
so that cooling is done all internally.
To improve cooling efficiently, you can take the heat sink out of the equipment or the
panel (as shown in Figure 2.2) so that cooling is done both internally and externally
(this is called "external cooling").
In external cooling, the heat sink, which dissipates about 70% of the total heat (total
loss) generated into air, is situated outside the equipment or the panel. As a result,
much less heat is radiated inside the equipment or the panel.
To take advantage of external cooling, you need to use the external cooling
attachment option for inverters with a capacity of 5.5 kW or above.
In an environment with high humidity or high levels of fibrous dust, do not use
external cooling, as this will clog the heat sink.
For details, refer to the Mounting Adapter for External Cooling "PB-F1/E1"
Installation Manual (INR-SI47-0880a).
Figure 2.2 External Cooling
Prevent lint, paper fibers, sawdust, dust, metallic chips, or other foreign materials from getting into the inverter or from
accumulating on the heat sink.
This may result in a fire or accident.
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