class B insulation B级绝缘
SZKX series has self-cooling sealed structure and in use for B-class insulation material, so possesses features of less maintenance, reliable operation and long life.
本电动机采用封闭型自冷结构和B极构缘材料，维护少、运行可靠、寿命长。
Stator insulation is class B. These generators are elegant in appearance tight in construction easy maintenance.
定子绝缘是阶级乙这些发电机是优雅的外观，严密施工，并易于维护。
Features:The insulation class is B; the protective class is IP44.
特点：绝缘等级为B级，外壳防护等级为IP44。
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