WEG CFW320, User Manual

Page: 18 / 62

INSTALLATION AND CONNECTION
3 INSTALLATION AND CONNECTION
3.1 MECHANICAL INSTALLATION
3.1.1 Environmental Conditions
Avoid:
Direct exposure to sunlight, rain, high humidity or sea-air.
Inflammable or corrosive gases or liquids.
Excessive vibration.
Dust, metallic particles or oil mist.
Environment conditions permitted for the operation of the inverter:
Temperature around the inverter: 0 °C(32 °F) up to the rated temperature indicated in Table B4 on page 51 :
200V Line : from 0 °C to 50 °C (32 °F to 122 °F).
400V Line : from 0 °C to 40 °C (32 °F to 104 °F).
For temperatures surrounding the inverter higher than the specifications above, it is necessary to apply a 2 %
current derating for each degree Celsius (1.1 % for each degree Fahrenheit), limited to an increase of 10 °C (18
°F).
Air relative humidity: 5 % to 95 % non-condensing.
Maximum altitude: up to 1000 m (3.300 ft) - rated conditions.
From 1000 m to 4000 m (3.300 ft to 13.200 ft) - 1% of current derating for each 100 m (330 ft) above 1000 m
(3.300 ft) of altitude.
From 2000 m to 4000 m (6.600 ft to 13.200 ft) above sea level - maximum voltage derating (127 V / 240 V / 480 V,
according to the model, as indicated in
Table B1 on page 45 ) of 1
.
1% for each 100 m (330 ft) above 2000 m
(6.600 ft).
Pollution degree: 2 (according to EN 50178 and UL 61800-5-1), with non-conductive pollution. Condensation
must not originate conduction through the accumulated residues.
3.1.2 Positioning and Mounting
The external dimensions and fixing holes, likewise the inverter net weight (mass) are shown in Figure A6 on page
38 .
Mount the inverter in the upright position on a flat and vertical surface. Allow the minimum clearances indicated in
Figure A7 on page 40 , in order to allow the circulation of the cooling air. Do not install heat sensitive components
right above the inverter.
!
ATTENTION!
In order to comply with UL standard, use a cabinet with minimum dimensions of 150 % larger than
the product dimensions shown in
Figure A6 on page 38 (the resulting clearance spaces arround
the inverter will be larger than those shown in Figure A7 on page 40 ). For more details, refer to Item
3.2.3.1.1 Short Circuit Current Ratings (SCCR) on page 17 and to the Table B3 on page 49 .
When installing two or more inverters vertically, respect the minimum clearance A + B (as shown in
Figure A7 on page 40 ) and provide an air deflecting plate so that the heat rising up from the lower
inverter does not affect the top inverter.
Provide independent condults for the physical separation of signal, control and power cables (refer
to
Section 3.2 ELECTRICAL INSTALLATION on page 13 ).
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