Stock / low / sell [WSQ3 brushless starter ring (Figure)] - factory direct starter: Brushless starter ring / WSQ3 of a brushless starter ring / brushless starter / starter ring / brush-controlled motor starter / WZR controlled brushless motor soft starter / WSZQ controlled brushless vacuum motor starter / the wound motor starters / wound rotor motor starter / high voltage winding motor starter / winding three-phase asynchronous motor starter / YR wound rotor motor starter / JR-wound rotor motor starter / YR winding three-phase asynchronous motor starter the / YRKK high voltage winding motor soft starter / the YZR-type wound rotor motor starter / a JZR type wound rotor motor starter / high-pressure wound rotor motor soft starter / rotor motor starters slip ring motor starter brushless variable resistance starter / brushless rheostat / brushless variable resistance the starter cabinet brushless liquid resistance starter is the / WSZK brushless liquid resistance vacuum motor soft starter brushless frequency sensitive rheostat motor soft starter the brushless the vacuum motor starters starter: Brushless ring starter / WSQ3 brushless ring starter / brushless starter / the acyclic start / brushless motor starters / the WZR controlled brushless motor soft starter / WSZQ Brushless self-control vacuum motor starter / winding motor starter / winding rotor motor starter / high voltage winding motor starter / winding three-phase asynchronous motor starter / YR wound rotor motor starter / JR-wound rotor motor starter / YR winding three-phase asynchronous motor starter / YRKK high-voltage winding motor soft starter / YZR-type wound rotor motor starter / JZR wound rotor motor starter / high-pressure wound rotor motor soft starter / rotor motor starters slip ring motor starter brushless variable resistance starter / brushless rheostat / brushless variable resistance start the Cabinet brushless liquid resistance starter / WSZK brushless fluid resistance vacuum motor soft starter brushless frequency sensitive rheostat SOFTSTARTER brushless vacuum motor starter Product Introduction and Features JR, JZR, YR, YZR, three-phase winding type rotor induction motor (also known as slip ring motor). Since its rotor external resistance or reactance, high power factor and high starting torque at start, in the fields of metallurgy, machinery, chemicals, mining, building materials commonly used in this motor to Drag the device. Slip ring, carbon brushes, short-circuit ring is mounted on the motor shaft parts, they relay in the control box, AC contactor, frequency sensitive rheostat and other electrical components to form a complete system of the secondary circuit, as motor starting and means of running shorting. This way of working of the motor has the following disadvantages: 1, carbon brush is easy to wear, excessive consumption, the amount of maintenance, and affect the normal production. Between brush and slip ring is easy to produce sparks, some places can not be used. 3, brush and slip ring friction, increases the contact resistance, the motor temperature rise. 4, conductive powder is easily inhaled inside the motor and is a serious hazard of burning motor. 5, the time relay out of control easily burn exchanges