Soft starter cabinet - Solutions - Huaqiang Electronic Network

Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

Photocoupler

The soft start cabinet can reduce the voltage drop caused by the hard start (ie direct start) of the motor, so that it does not affect the normal operation of other electrical equipment in the common network, and can reduce the inrush current of the motor. The inrush current will cause the local temperature rise of the motor. Large, reducing the life of the motor, can reduce the mechanical impulse caused by the hard start, the impulse accelerates the wear of the transmission machinery (shaft, meshing gear, etc.), reduces electromagnetic interference, and the inrush current will interfere with the normal operation of the electrical instrument in the form of electromagnetic waves. The soft start cabinet allows the motor to start and stop freely, reduce idling and increase the operating rate, thus saving energy. The soft start of the soft start cabinet can be divided into two types: graded and stepless. The adjustment of the former is binned; the adjustment of the latter is continuous. Traditional soft starters are graded, such as star/angular change soft start, autotransformer soft start, reactor soft start, and so on. There are three main types of continuous regulation: a liquid-resistance soft starter with an electrolyte limit, a thyristor soft starter with a thyristor (SCR) as a current limiting device, and a magnetic saturation softener with a magnetic saturation reactor (SR) as a current limiting device. Starter cabinet. The variable frequency speed control device is also a soft start device, which is an ideal one, which can maintain a high starting torque while limiting current. Expensive price is the main factor restricting its promotion and application. People purchase variable frequency speed control devices generally focus on speed regulation, so they are often not classified as soft starters. In the motor stator circuit, a soft start is achieved by a power device that is connected to a finite current, called a buck or current-limited soft start. It is a major category in soft starter cabinets. The high-voltage step-down soft starter cabinet is another important category. In the following articles, we will continue to introduce the high-voltage soft start cabinet.