Back-Channel Cooling Overview - Danfoss VLT AutomationDrive FC 361 Series Design Manual

90–315 kw, enclosure sizes j8–j9

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Product Overview and Featur...

VLT® AutomationDrive FC 361

3.5 Back-channel Cooling Overview

A unique back-channel duct passes cooling air over the heat sinks with minimal air passing through the electronics area.

There is an IP54/Type 12 seal between the back-channel cooling duct and the electronics area of the VLT

drive. This back-

channel cooling allows 90% of the heat losses to be exhausted directly outside the enclosure. This design improves

reliability and prolongs component life by dramatically reducing interior temperatures and contamination of the electronic

components. Different back-channel cooling kits are available to redirect the airflow based on individual needs.

3.5.1 Airflow for J8 & J9 Enclosures

225 mm (8.9 in)

Illustration 3.6 Standard Airflow Configuration for Enclosures J8 and J9

MG06K102

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