Nord Drivesystems NORDAC FLEX SK 200E Series Brief Instructions page 23

Frequency inverters

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2 Mounting and installation

Information

Output derating

The devices require sufficient ventilation to protect against overheating. Failure to do so will result in a derating

of the variable frequency drive. Ventilation is affected by the type of installation (motor mounting, wall mounting)

or, with motor mounting, the air flow of the motor fan (continuous slow speed  lack of cooling).

Insufficient cooling can result in derating of 1-2 rating classes during S1 operation, for example, which can only

be compensated for by using a nominally bigger device.

Details concerning derating and possible ambient temperatures, and other details ( Section Fehler!

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BU 0240 en-US-4920

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