Installation And Connection; Mechanical Installation; Environmental Conditions; Positioning And Mounting - WEG CFW900 User Manual

3 INSTALLATION AND CONNECTION

This chapter provides information on installing and wiring the CFW900. The instructions and guidelines listed in
this manual shall be followed to guarantee personnel and equipment safety, as well as the proper operation of the
inverter.

3.1 MECHANICAL INSTALLATION

3.1.1 Environmental Conditions

NOTE!
✓
This product is designed for use in sheltered places only.
Avoid:
Direct exposure to sunlight, rain, high humidity, or sea-air.
Inflammable or corrosive gases or liquids.
Excessive vibration.
Dust, metallic particles, and oil mist.
Environment conditions for the operation:
The maximum rated ambient temperature at the back of the inverter (around the heatsink) is:
-10 °C to 45 °C (14 °F to 113 °F) for frame E models.
-10 °C to 50 °C (14 °F to 122 °F) for other frames.
Operation at temperatures above the rated one is possible; however, in these cases, the output current must be
derated, as described in
The maximum rated ambient temperature on the front of the inverter is 60 °C for all models, except for the models
indicated in Section 8.1.4.
Humidity: from 5 % to 95 % non-condensing.
Maximum altitude: up to 1000 m (3,300 ft) rated conditions. Operation at an altitude of up to 4000 m is possible,
however, in these cases, the rated output current and supply voltage must be derated as per
Pollution degree: 2 (according to EN50178 and UL61800-5), with non-conductive pollution. Condensation shall
not originate conduction the accumulated residues.

3.1.2 Positioning and Mounting

Consult the inverter weight at the
Mount the inverter in the upright position on a flat and vertical surface. Frames A ...C can be installed horizontally
as long as the recommendations of
External dimensions and fixing holes position according to the
First mark the mounting points and drill the mouting holes. Then, position the inverter and firmly tighten the screws
in all four corners to secure the inverter.
Minimum mounting clearances requirements for proper cooling air circulation are specified in
3.3.
Inverters of frames A ... D can be arranged side-by-side with no clearance required between them. In these cases,
the upper ventilation openings must be free for air circulation, that is, it is not possible to use the IP21 and UL type
1 kits.
Section 8.2.
Section 8.4.
Figure 3.3.
INSTALLATION AND CONNECTION
Figure 3.1. Refer to Section 8.4
Section 8.2.
for further details.
Figure 3.2 and Table
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