Altivar 312 Variable Speed Drives Page 54 Accessories and Options

54 Altivar 312 variable speed drives Installation Recommendations Installation recommendations Depending on the conditions in which the drive is to be used, its installation will require certain precautions and the use of appropriate accessories. Install the unit vertically, at 10: Do not place it close to heating elements Leave sufficient free space to ensure that the air required for cooling purposes can circulate from the bottom to the top of the unit Mounting types Type A mounting Type B mounting Type C mounting Removing the protective cover from the top of the drive (as shown opposite) changes the degree of protection to IP 20. Derating curves for the nominal drive current (In) as a function of temperature, switching frequency and mounting type. Removing the protective cover u 50 mm u 50 mm u 10 mm u 50 mm u 50 mm u 50 mm u 50 mm I / In 100 % - 5 % - 10 % 90 % 80 % 70 % 60 % 50 % 40 % 30 % 4 kHz 8 kHz 12 kHz 16 kHz In - 15 % - 25 % - 35 % - 10 % - 20 % - 30 % - 40 % - 50 % - 25 % - 35 % - 45 % - 55 % - 65 % Switching frequency 40C mounting types A and B 50C mounting type C 50C mounting types A and B 60C mounting type C 60C mounting types A and B For intermediate temperatures (for example, 131 F (55C)), interpolate between 2 curves. Description of installation recommendations

Previous Page
Next Page