LQ 6-10KV 500-14000KW squirrel cage (synchronous) motor liquid resistance starting cabinet

Large and medium-sized squirrel-cage asynchronous motors are one of the main electrical equipment for many industrial and mining enterprises. According to the regulations of the National Energy Conservation Center, high-voltage motors should be preferred for large and medium-sized motors, and the starting of high-voltage motors is a primary issue. In various industrial and mining enterprises, high-power cage motors generally use direct starting, series reactor starting, high-voltage There are several starting methods, such as variable frequency soft start, series liquid resistance voltage reduction start, etc.
The motor directly connected to the high-voltage power grid will cause the grid voltage to drop when starting at full voltage, affecting the normal operation of other equipment on the power grid, and even causing accidents; the motor connected to the special transformer requires a certain margin for the transformer capacity, and Most companies choose the transformer with limited capacity margin, and can only start at full voltage at no-load, and add load after starting, which will cause a great mechanical impact to the motor and greatly shorten the service life of the motor and the driving system. In these cases, we can only start the squirrel motor by means of reduced voltage starting.
In view of this situation, our company has developed a liquid resistance soft starter suitable for large and medium-sized squirrel motors based on several years of experience in the development of liquid resistance products. This product makes full use of the characteristics of large heat capacity and good adjustability of liquid resistance, and can control the starting current of the motor within the range of 2-3.5Ie times the rated current of the motor, which greatly reduces the starting current. It has become the ideal soft starter product for international large and medium cage motors.