Application
It is applicable to soft start and protection for cage type

asynchronous motors or synchronous motors of three phase alternating

current 3 KV, 6 KV, 10 KV and rated power to 100-40000KW

Working principle
The controlled motor of rotor loop in series with the three-phase

liquid resistance, fluid resistance with starting motor and automatic

input, resistance will be stepless reduced within predetermined time,

close to zero automatic excision, thus motor terminal voltage rising,

torque step up gradually, and no impact start-up smoothly.

Performance and Features
1.Low starting current, and no impact. Ensure power network run

reliably
2.Starting current is about 1.5～3.5 times of rated current; It can

work continuously for 2～3 times
3.It has perfectly protecting alarm function of motor
4.It is small influence and no harmonic pollution, especially

applicable for insufficient capacity of enterprises
5.It can be reduced liquid resistor to promote terminal voltage and

increase motor output to ensure start-up success for once.
6.Start smothly, mechanical stress impact is little. Motors and driving

machineries can be protected effectively
7.Simple structure, convenient installation and high reliability

Ambient Condition
Ambient temperature: 0～+40℃; Relative humidity: less than 90%;

Altitude: no more than 1000m
Installation site: vertical inclination shall be no more than 5º. There

is no risk of fire hazard and explosion, non conductive dust, corrosive

gas and strong vibration

Complies with the standards
AC metal enclosed switch device  GB3906-2001
Liquid resistance starter for high voltage motor  Q/HZK JS5-2001