Brushless Liquid Resistance vacuum motor in WSZK starter the starter is not only the traditional wound rotor motor starting to get rid of a large and complex system, and it solves the eddy current losses, leakage reactance starter fever a few of the most important problems. The starter is mounted on the rotor of the motor for a pressure-relief device for synchronous operation, the use of the motor speed and inertia effect, set the vacuum shorting switches the shorting switch internal vacuum interrupter design to eliminate from climbing The electric starter burned occurrence. When the motor reaches rated speed, without the use of a starter, the the shorted device will coil winding automatic disconnect, not only saves energy, and no 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 circuit system frequency sensitive rheostat, AC contactors, time relays and other components, brushless motor acyclic run based on truly maintain the original motor operation characteristics, and it to extend the service life of the motor at the same time, but also ensure the service life of the starter itself. Controlled brushless the vacuum motor starters will certainly excellent starting performance, low price, power and load adaptive capacity, small volume, energy saving, and running easy maintenance, etc., to obtain a wider range of applications. Working principle works: Brushless fluid resistance of the vacuum motor starter is the use of the motor during starting, its resistance is a variable that can increase or decrease with the rotor current frequency is proportional to the size of cases, the starter coil winding, inside and outside the core , front and back yoke plate, sleeve, short tap and other major parts to form a circular reactor, this starter is mounted on the motor shaft, and the use of the motor during starting, the rotor current frequency fz with the rotor speed increases to reduce relationship, that is, the rotor speed from 0 ~~ ne, the rotor current frequency from 50Hz smoothly down to 1 ~ 3Hz, the starter iron loss from the largest to the smallest, equivalent to the rotor circuit external resistors are also the biggest change to the minimum, it can automatically change with the rotor frequency for smooth adjustment. Shorting switches when the motor speed is close to the rated speed, the inertial force can be automatic shorting of the starter, without any auxiliary electrical components, a good solution to the loss of the rotor, the temperature, the load current is high, etc., causing all the implications. Scope and technical parameters: where the original resistance starter, reactors, frequency sensitive rheostat liquid rheostat starters, soft starter starter JR JZR YR YZR three-phase wound rotor AC induction motor (variable speed, except fitted into the camera) can be selected and controlled brushless vacuum motor starter replacement, equipped with motor capacity of 50kw-1000kw best. Dragging equipment such as ball mills, crushers, fans, air compressors, pumps, conveyors, rubber mixing machine, hypoxia machine, mill regardless Reversible, occasional and frequent starting will not affect. The starter applied to the 3KV, 6KV, 10KV, Power range 380kw-2000KW even larger capacity motor voltage starting. Performance characteristics: WSZK Brushless Liquid Resistance true