Chapter 2 Installation and Wiring
2 - 5
Section to be cut off
Joint
(9) Reduction of enclosure size
If you mount the inverter inside an enclosure such that the heat sink of the inverter is positioned
outside the enclosure, the amount of heat produced inside the enclosure can be reduced and likewise
the size of the enclosure.
Mounting the inverter in an enclosure with the heat sink positioned outside requires an optional
dedicated special metal fitting.
To mount the inverter in an enclosure with the heat sink positioned outside, cut out the enclosure panel
according to the specified cutting dimensions.
The cooling section (including the heat sink) positioned outside the enclosure has a cooling fan.
Therefore, do not place the enclosure in any environment where it is exposed to waterdrops, oil mist,
or dust.
(10) Approximate loss by inverter capacity
Inverter capacity (kW) 5.5 7.5 11 15 18.5 22 30 37 45 55 75 90 110 132 160
Loss with 70% load (W) 242 312 435 575 698 820 1100 1345 1625 1975 2675 3375 3900 4670 5660
Loss with 100% load (W) 325 425 600 800 975 1150 1550 1900 2300 2800 3800 4800 5550 6650 8060
Efficiency at rated output (%) 94.4 94.6 94.8 94.9 95.0 95.0 95.0 95.1 95.1 95.1 95.2 95.2 95.2 95.2 95.2
2.1.2 Backing plate
(1) For models with 30 kW or less capacity
On the backing plate, cut the joints around each section to be cut off with cutting pliers or a cutter,
remove them, and then perform the wiring.
(2) For the models with 37 kW to 75kW
1) For wiring without using conduits
Cut an X in each rubber bushing of the backing plate with cutting pliers or a cutter, and then perform
the wiring.
2) For wiring using conduits
Remove the rubber bushings from the holes to be used for wiring with conduits, and then fit conduits
into the holes.
Note: Do not remove the rubber bushing from holes that are not used for wiring with a conduit.
If a cable is connected through the plate hole without a rubber bushing and conduit, the cable
insulation may be damaged by the edge of the hole, resulting in a short circuit or ground fault.
Backing plate
Rubber bushing
To Next Page
Loading...
