BP8Y-31511 frequency sensitive rheostat 
 BP4 frequency sensitive rheostat for three-phase AC 50 Hz, Capacity 40-1000 kW winding type motor, connected to the motor rotor circuit, as occasionally from the action. 
 BP4 frequency sensitive rheostat light-load starting points and heavy-duty starting two types; light-load starting model for the air compressor, refrigeration machines, machine tools, exhaust fans, etc., heavy-duty starting model for ball mill, crusher, belt conveyor and so on. BP4 frequency sensitive rheostat is a great loss of the reactor, the core columns of thick steel, thick steel plates used yoke frame and magnetic induction as a swirl of bodies, steel tubing with coils, the light-load starting frequency sensitive rheostat . Frequency sensitive rheostat for heavy-duty starting line outside of the circle jacketed aluminum, aluminum is the second short-circuit coil, it has to improve power factor and increase the role of starting torque. 
 BP8Y-31511 frequency sensitive rheostat 

 (BP4 frequency sensitive rheostat for three-phase AC 50 Hz, Capacity 40-1000 kW winding type motor, connected to the motor rotor circuit, as occasionally from the action. 
 BP4 frequency sensitive rheostat light-load starting points and heavy-duty starting two types; light-load starting model for the air compressor, refrigeration machines, machine tools, exhaust fans, etc., heavy-duty starting model for ball mill, crusher, belt conveyor and so on. BP4 frequency sensitive rheostat is a great loss of the reactor, the core columns of thick steel, thick steel plates used yoke frame and magnetic induction as a swirl of bodies, steel tubing with coils, the light-load starting frequency sensitive rheostat . Frequency sensitive rheostat for heavy-duty starting line outside of the circle jacketed aluminum, aluminum is the second short-circuit coil, it has to improve power factor and increase the role of starting torque. 
 BP8Y-31511 frequency sensitive rheostat