Small and lightweight yet powerful, R type transformer soft start for a smooth start!
With the increasing production demand, the production scale of many industries is getting larger and larger, and the demand for the use of high-voltage motors is also gradually increasing. In order to meet the requirements of active power and reactive power when the large-capacity motor starts, meet the requirements of the terminal voltage when the motor starts, now choose soft start, reduce the starting current through the power transformer, large-capacity motor start is very practical, so what is the current way of soft start of the power transformer? Let’s take a look.
Soft start liquid resistor
Liquid resistance is a resistance formed by electrolytes. The essence of its conduction is ionic conduction. The resistance value is proportional to the electrode plate spacing. Compared with the conductivity of the electrolyte, the resistance value can be changed by changing the electrode plate spacing and conductivity, so that the voltage and current can be adjusted without poles to meet the requirements of soft starting performance.
Magnetic soft start
Magnetically controlled soft start is to use the AC effective permeability of ferromagnetic material to change with the size of the DC magnetic field, by changing the resistance value of the AC winding resistance, to achieve steppeless voltage regulation and complete the soft start. By controlling the DC excitation current and changing the saturation of the iron core, the reactance value is changed, so it is called magnetic soft start.
Soft start switch transformer
Soft start devices of switching transformers use switching transformers to isolate high and low voltage. The low voltage winding resistance of the switching transformer is connected to the thyristor control system. The voltage on the high voltage winding resistance is changed by changing the voltage on the low voltage winding resistance, so as to adjust the voltage at the motor end and realize the soft start of the motor.
Through the above information, we understand the principle of the motor soft start power transformer. The soft start of the high voltage motor ensures the safe operation of the power grid, prolongs the service life of the equipment, and realizes the precise control of the motor. However, in different application scenarios and different use of equipment, the size of the motor is also different, or the weight of the load when starting, the frequency of use, and the requirements for explosion-proof and dustproof are also different. Therefore, when choosing, you need to choose your own motor soft start transformer according to your own use needs to better protect the equipment and use safety.