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FAQ01516 of Axial Fans FAQ

FAQ No. FAQ01516

Primary Contents

Question

What are insulation levels?

Answer



There are six insulation levels in all, each with a maximum allowable temperature. Safety standards each specify the applicable insulation level.

Insulation levelMaximum allowable temperature
Class Y90°C
Class A105°C
Class E120°C
Class B130°C
Class F155°C
Class H180°C

Safety standardInsulation level
ULClass A
CSAClass B
VDEClass E or B

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