Product Introduction

A Starting And Adjusting Resistor Box is an electrical device that plays a key role in motor starting and operating adjustments. By precisely controlling the resistance value of the connected circuit, it limits the motor's starting current and flexibly adjusts parameters such as speed and torque during operation. It is widely used in various industrial scenarios requiring precise motor operation control, such as large fans, pumps, compressors, and lifting and transportation equipment, ensuring smooth starting, efficient operation, and reliable control of the equipment.

Product Picture

Core Functions:

(I) Motor Startup Control

At the moment of motor startup, the Starting And Adjusting Resistor Box is connected to the circuit, increasing the total resistance of the circuit. This effectively limits the starting current and prevents excessive starting current from impacting and damaging the motor windings, the power grid, and other electrical equipment. As the motor speed gradually increases, the resistor box gradually reduces the connected resistance according to a preset program, ensuring that the motor obtains appropriate torque during startup, achieving a smooth and fast start.

(II) Operating Parameter Adjustment

During normal motor operation, the resistor box can adjust the connected circuit resistance in real time based on actual operating conditions, thereby changing the motor speed and torque. For example, as the fan load changes, adjusting the resistance of the resistor box can maintain the optimal operating speed and improve energy efficiency. When lifting heavy objects with lifting equipment, the resistor box can be flexibly adjusted based on the weight and lifting height to ensure the motor outputs appropriate torque, ensuring safe and stable lifting operations.

(III) Protection Functions

The resistor box has protection functions such as overload and short - circuit. When an abnormal situation such as overload or short circuit occurs during the operation of the motor, the resistor box can quickly cut off the circuit or adjust the resistance value to limit the further increase of current, protect the motor and the resistor box itself from damage, and extend the service life of the equipment.

Wiring diagram (as shown in Figure 1)

production equipment

product-1000-562

Application Areas

(1) Power Industry

In power generation facilities such as thermal power plants, hydroelectric power plants, and nuclear power plants, Starting And Adjusting Resistor Boxes are used to start and adjust the motors of auxiliary equipment such as large fans, water pumps, and coal mills, ensuring stable operation during power generation.

(2) Metallurgical Industry

In metallurgical enterprises such as those involved in steel and nonferrous metals, resistor boxes are widely used to control the motors of rolling mills, steelmaking furnaces, fans, and pumps, meeting the precise starting torque and operating speed requirements of motors in metallurgical production.

(3) Chemical Industry

The starting and adjusting of motors for various pumps, compressors, mixers, and other equipment in chemical production processes rely on resistor boxes. They ensure smooth starting and reliable operation of equipment in complex chemical environments, ensuring safe and efficient chemical production.