SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
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Chapter 2 Installation and Wiring<br />
(6) Installation method and position<br />
Install the inverter vertically and securely with screws or bolts on a surface that is free from vibrations<br />
and that can bear the inverter weight.<br />
If the inverter is not installed vertically, its cooling performance may be degraded and tripping or<br />
inverter damage may result.<br />
(7) Mounting in an enclosure<br />
When mounting multiple inverters in an enclosure with a ventilation fan, carefully design the layout of<br />
the ventilation fan, air intake port, and inverters.<br />
An inappropriate layout will reduce the inverter-cooling effect and raise the ambient temperature. Plan<br />
the layout so that the inverter ambient temperature will remain within the allowable range.<br />
Ventilation fan<br />
Ventilation fan<br />
Inverter<br />
Inverter<br />
(Acceptable)<br />
(Unacceptable)<br />
Position of ventilation fan<br />
(8) Reduction of enclosure size<br />
If you mount the inverter inside an enclosure such that the heat sink of the inverter is positioned<br />
outside the enclosure, the amount of heat produced inside the enclosure can be reduced and likewise<br />
the size of the enclosure.<br />
Mounting the inverter in an enclosure with the heat sink positioned outside requires an optional<br />
dedicated special metal fitting.<br />
To mount the inverter in an enclosure with the heat sink positioned outside, cut out the enclosure panel<br />
according to the specified cutting dimensions.<br />
The cooling section (including the heat sink) positioned outside the enclosure has a cooling fan.<br />
Therefore, do not place the enclosure in any environment where it is exposed to waterdrops, oil mist,<br />
or dust.<br />
(9) Approximate loss by inverter capacity<br />
Inverter capacity (kW)<br />
0.4 0.75 1.5 2.2<br />
3.7<br />
(4.0)<br />
5.5 7.5 11 15 18.5 22 30 37 45 55 75 90 110<br />
132<br />
(150)<br />
Loss with 70% load (W) 64 76 102 127 179 242 312 435 575 698 820 1100 1345 1625 1975 2675 3375 3900 4670<br />
Loss with 100% load (W) 70 88 125 160 235 325 425 600 800 975 1150 1550 1900 2300 2800 3800 4800 5550 6650<br />
Efficiency at rated output (%) 85.1 89.5 92.3 93.2 94.0 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<br />
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