WEG CFW-11 Series - Mounting Considerations

Installation and Connection
3
3-2 | CFW-11
From 2000 m to 4000 m (6.600 ft to 13.200 ft) above sea level - reduction of maximum voltage (600 V for
500...600 V models and 690 V for 500...690 V models) of 1.1 % for each 100 m (330 ft) above 2000 m
(6.600 ft).
Note that derating specified in items above applies also to dynamyc braking IGBT (columm effective braking
current (I
effective
) of Table 3.10 on page 3-40).
Humidity: from 5 % to 95 % non-condensing.
Pollution degree: 2 (according to EN50178 and UL508C) with non-conductive pollution. Condensation
shall not originate conduction through the accumulated residues.
3.1.2 Mounting Considerations
Consult the inverter weight at the Table 8.1 on page 8-2, Table 8.2 on page 8-3, Table 8.3 on page 8-4
and Table 8.4 on page 8-5.
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 on page 3-3, Figure 3.2 on page
3-4 and Figure 3.2 on page 3-4. Refer to the Section 8.5 MECHANICAL DATA on page 8-9, for more
details.
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 Figure 3.3 on page
3-5, Figure 3.5 on page 3-9 and Figure 3.4 on page 3-6.
Inverters of frame sizes B and C can be arranged side-by-side with no clearance required between them. In this
case, the top cover must be removed as shown in Figure 3.3 on page 3-5.
Do not install heat sensitive components right above the inverter.
ATTENTION!
When arranging two or more inverters vertically, respect the minimum clearance A + B (Figure 3.3 on
page 3-5, Figure 3.5 on page 3-9 and Figure 3.4 on page 3-6) and provide an air deflecting
plate so that the heat rising up from the bottom inverter does not affect the top inverter.
ATTENTION!
Provide conduit for physical separation of the signal, control, and power conductors (refer to Section
3.2 ELECTRICAL INSTALLATION on page 3-14).