General description:

The TGRJ series medium and high voltage motor solid-state soft start cabinet is mainly suitable for the control and protection of the start and stop of (3~10kV) squirrel cage asynchronous and synchronous motors.

It is to connect high-quality anti-parallel thyristor components and electronic control equipment between the stator winding of the high voltage motor and the power supply. When the motor starts, the conduction angle of the thyristor is controlled according to a certain rule (such as constant current or voltage ramp), and the input voltage of the motor stator winding is continuously changed until full voltage. After the start is completed, the bypass contactor is energized. It has fault protection functions such as overload, phase loss, and starting peak overcurrent. Using it can effectively avoid the harmful impact on the power grid caused by excessive motor starting current, and can use high-power motors normally under limited power grid capacity and extend their service life. 

In addition, the TGRJ series high voltage solid-state soft start cabinet also has a "soft stop" function. When soft stopping, the motor stator winding voltage will be smoothly reduced, thereby avoiding sudden stagnation of the equipment, which is very useful for water pumps (to avoid water hammer) or conveyor belts.

TGRJ series medium and high voltage motor solid-state soft start cabinet can be widely used in steel, chemical industry, metallurgy, building materials, coal mines and other fields.

2. Performance characteristics

◆ It has a wide range of applicable voltage and power, and can be used with motors within 3kV, 6kV, 10kV 20000kW;

◆ It has soft start and soft stop functions to fully ensure the safe start and stop of the system;

◆ With LCD display, the motor start mode, start time and other parameters can be set;

◆ Support PROFIBUS or MODBUS protocol through the RS485 interface;

◆ Small size and high degree of intelligence.