... :2/4/6/8 3,The insulation class :B/F/H 1,Usage:The vibrating motor is widely used in hydropower construction ... ,the vibrating get exciting force.3,Technical features(1),The range of exciting force:1.5KN~100KN(2),series:2/4/6 ... /8(3),The insulation class :B/F/H(4),Protection Grade ...