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Insulation class explanantion
This document provides information about insulation classes for electric motors, including permissible temperature rises, hotspot temperature margins, and maximum winding and ambient temperatures for classes B, F, and H. Insulation class F motors have the highest maximum winding temperature of 180°C, while class B is lowest at 130°C. Minimum ambient temperatures range from -30°C to -20°C depending on the insulation class.
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Insulation class explanantion
- 1. 10K 10K 15K 80K 105K 125K 40°C 40°C 40°C Permissibletemperature rise Hotspot temperature margin Insulation class B F H Maximum winding temperature 130°C 155°C 180°C 0 40 120 130 155 145 165 180 °C -20 Maximum ambient temperature Minimum ambient temperature -30 (Minimum ambient temperature) 10K 105K 40°C class F/B 155°C 80K 25KSafety margin 150°C PTCs setting -2 °C0 -2 °C0 -2 °C0 www.regalbeloit.euRegal Beloit BV, Mors 2, 7150 AA Eibergen, The Netherlands -2 °C0 Permissibletemperaturerise IEC Electric Motors - Insulation Class Explanation