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1.三相电动机保护用热继电器的选择1.1热继电器的分类为能正确选择热继电器,应先了解其分类。热继电器的形式有多种,其中双金属片式的
1. Three-phase motor thermal relay selection 1.1 thermal relay classification To be able to correctly select the thermal relay, you should first understand the classification. There are many types of thermal relays, of which bimetallic type