Overview wound rotor induction motor (also known as slip ring motor) dedicated WSQ3 brushless ring starter, Henan the new liquid starter Equipment Co., Ltd. company after nearly a decade of development of production of a new generation of energy-efficient motor starting equipment. This product is not only the traditional wound rotor motor to get rid of a large and complex starting system, and it solved the eddy current loss, leakage reactance starter fever a few of the most important problems. The starter is to install a pressure-relief device for synchronous operation of the motor rotor, motor speed and inertia effect, set the vacuum short tap, the shorting switch internal vacuum interrupter design, to eliminate from climbing electric starter caused burning phenomenon occurred. When the motor reaches the rated speed, without the use of the starter, the the shorted device will coil winding automatic disconnect, not only saves energy, but not heat coil winding to ensure the stable operation of the starter. Its advantages are: remove the slip ring, carbon brushes, brush box and short-circuit ring, remove the secondary loop systems in the frequency sensitive rheostat, AC contactors, time relays and other components, in the brushless motor loop operation based on the real to maintain the operational characteristics of the original starter, extend the life of the motor at the same time, ensure the service life of the starter. Brushless variable resistance starter is bound to be a good starting performance, low price, power supply and load adaptive capacity, small size, energy efficiency and running easy maintenance, etc., to obtain a wider range of applications. Product 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, the time relay runaway easy to burn out the AC contactor and frequency sensitive rheostat, resulting in downtime discontinued. WSQ3 brushless ring starter is also just overcome shortcomings. It eliminates the need for slip rings, carbon brushes and secondary loop system, no spare parts, reduce the amount of maintenance, to ensure the safe operation of the motor, once installed, is currently a leading position in the domestic long-term benefit starting equipment. Brushless Central starter working principle of the QXQ brushless Kai starter is the the BP4 the frequency sense rheostat work of evolution, it uses the best principles of magnetic circuit and the best magnetic materials the original secondary loop system multi-