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。
Y series three phase induction motor (380v IP23) is low voltage motor for normal use. The basic protection class are IP23, insulation class is b.
系列三相异步电动机(380 V IP23)是一般用途的低压三相笼型异步电动机，基本防护等级为IP23、绝缘等级为B级。
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