● Application and Characteristics:
■ Soft starting (see diagram 2.1.1 for starting current curve),the starting current is 2-3.3 times than the motor rated current,which reduces the starting heat of the motor and effectively plolongs the motor operation life.
■ It is ensured that the motor can be successfully started on the first test run,which won’t be affected by voltage fluctuation of the power network and the load alteration.
■ It starts smoothly and has no impact on the mechanical devices(see diagram 2.1.2).
■ It has small effect on the power network,and the voltage decrease of the power network during starting is within 5%.
■ Simple structure,it is easy to maintain.