... Product Description and Usage: An overview of the - CM, CMW, the CME, the CMD busbar type wall ... voltage (10 ~ 35) kV, frequency (15 ~ 60) Hz three-phase AC system power station and substation power ... of the product, according to GB/T5582 divided into I, II, III, IV, 4;Recurrent severe vibration ... GB12944.1 voltage ceramic wall casing technical conditions. CM, CMW, the CME, the CMD busbar type wall ...