Installation And Connection; Mechanical Installation; Environmental Conditions; Positioning And Mounting - WEG CFW-11 Series User Manual

INSTALLATION AND CONNECTION

This chapter describes the CFW-11 electrical and mechanical
installation procedures. The guidelines and suggestions must be
followed aiming personnel and equipment safety, as well as the
proper operation of the inverter.

3.1 MECHANICAL INSTALLATION

3.1.1 Environmental Conditions

Avoid installing the inverter in an area with:
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 of the inverter:
Temperature: -10 ºC to 45 ºC (14 °F to 113 °F) (40 ºC (104 °F) for the 720 A model) – nominal conditions
(measured surrounding the inverter).
For operation with temperature higher than the maximum as specified below (limited to 10 ºC (18 °F)
above maximum ambient temperature according to the previous item): apply a derating of 2 % each
Celsius degree (or 1.11 % each Fahrenheit degree) above 45 °C (113 ºF) (valid for all models except
720 A) or 40 °C (104 ºF) (for 720 A model).
Air relative humidity: 5 % to 95 % non-condensing.
Altitude: up to 1000 m (3,300 ft) - nominal conditions (no derating required).
From 1000 m to 4000 m (3,300 ft to 13,200 ft) - 1 % of current derating for each 100 m (or 0.3 % each
100 ft) above 1000 m (3,300 ft) altitude.
Pollution degree: 2 (according to EN50178 and UL508C), with non-conductive pollution. Condensation
must not originate conduction through the accumulated residues.

3.1.2 Positioning and Mounting

Consult the inverter weight at the table 8.1.
Mount the inverter in the upright position on a flat and vertical surface.
External dimensions and fixing holes position according to the figure 3.1. Refer to the section 8.3 for more details.
First put the screws on the surface where the inverter will be installed, install the inverter and then tighten the
screws.
Allow the minimum clearances indicated in the figure 3.2, in order to allow the cooling air circulation.
Do not install heat sensitive components right above the inverter.
Installation and Connection
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