I. Introduction and features: JR, JZR, YR, YZR, three-phase wound rotor AC 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, AC contactor and frequency sensitive rheostat the time relay runaway easy to burn out, causing downtime discontinued, brushless starter ring installation and wiring, first remove the shield of the motor, slip ring, carbon brushes, brush box, brush all parts of the cartridge holder and short circuit ring device (some motor short-circuit ring device). Demolition of slip ring, to prevent later wiring errors, the same two wires should be tied together. 3, with a vernier caliper, measure the motor shaft diameter and pore size of the starter, key pitch, the key to higher dimensions are the same, if any difference, with the company in a timely manner, in order to solve. Lightly grease or oil on the shaft keyway alignment of the starter shaft key, and then copper rod starter gently tap to the assembly position, and stuck with a wire ring to prevent starter axial move. 5, assembly, should not knocking Cookin, so as to avoid damage to internal parts or leaking. After the completion of the initiator assembly, the outlet of the rotor is connected in the starter terminal corresponding to the position (there are six outlet of the motor, the two wires should be of the same phase, connected to the two terminals of the same color) can be specific wiring as shown below. Run and maintenance, WSZK liquid brushless starter ring components in addition to resistance in the starter may have a fever, the other does not heat the device is maintenance-free design, please do not own the cover open, in order to avoid damage to the elements within the initiator. 2, when Brushless starter ring inside the liquid below the specified liquid level should be added to the starting fluid to the required liquid level. 3, safety exhaust valve is to ensure that the motor was not an important component of the liquid jet out it to reach the rated speed as the motor will automatically open with the atmospheric pressure inside the starter, so users do not self-adjustment. Wenzhou dawn Starting Equipment Co., Ltd. is located in Yueqing City, Zhejiang Province, Wenzhou, China Daxing Road 431, the main Brushless Central starter, brushless motor starters, the wound motor starters, slip ring motor starters, brushless variable resistance starter, wound rotor motor starters, high voltage winding