Soft starter of squirrel cage motor

The utility model discloses a soft starter of a squirrel cage motor. The soft starter of the squirrel cage motor comprises a squirrel cage motor, a working switch KM1 is connected with a circuit between the squirrel cage motor and a three-phase power supply in series, a capacitor protection switch D...

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Bibliographic Details
Main Authors MA FUTONG, MA FULI, MA DIANYUE, MA ZHIHUI
Format Patent
LanguageChinese
English
Published 29.05.2013
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:The utility model discloses a soft starter of a squirrel cage motor. The soft starter of the squirrel cage motor comprises a squirrel cage motor, a working switch KM1 is connected with a circuit between the squirrel cage motor and a three-phase power supply in series, a capacitor protection switch DK2 is connected with a circuit between an input phase start working capacitor C and the working switch KM1 in series, both ends of a series circuit of a wire inlet starting switch KM2 and a voltage reduction transformer are respectively connected with a circuit between the working switch and the three-phase power supply and a sealing point, and a sealing point switch KM3 is connected with a circuit between the transformer and the sealing point in series. Compared with the prior art, the soft starter of the squirrel cage motor has significant advantages of little startup current, little impact on a power grid and smooth start when the power grid is weak.
Bibliography:Application Number: CN20122616930U