Solid State Soft Starter

By controlling the three-phase anti-parallel thyristors connected between the power source and the controlled motor, it achieves functions such as soft starting and soft stopping of three-phase AC asynchronous motors. This product effectively limits the starting voltage of asynchronous motors during startup and can be widely applied to heavy-duty equipment such as fans, pumps, conveyors, and compressors. It serves as an ideal replacement for traditional voltage-reduction starting devices, such as star-delta conversion, autotransformer voltage reduction, and magnetic control voltage reduction systems.

The SSD2 series solid state soft starter provides multiple protections for both the soft starter and the motor.

Its main functions include:

• Three-phase input phase loss protection: The soft starter will only start when the main circuit is connected to a three-phase input power supply and there is a certain load. If the R/S phase is missing, the soft starter will not display any indication. If the T phase is missing, the soft starter will display a power-on phase loss indication.
• Over-temperature protection: This occurs when the starter is started too frequently, causing the thyristor components to overheat (above 85°C).
• Over-time protection: Prolonged startup times are detrimental to both the starter and the motor. The startup time is factory-set to 70.0 seconds. Depending on the specific load, this time can be adjusted between 5.0 and 200.0 seconds.
• Electronic overload protection: The levels are divided into 6 grades, with higher grades providing stricter protection and lower grades offering more sensitive protection. Users can set different protection levels based on the severity of the load.

 

The SSD2 solid state soft starter reliably prevents mechanical shock and grid voltage drops during the starting process by limiting the starting current and starting torque. By controlling the conduction angle of the thyristor, the motor's starting voltage is reduced, and within the set starting time, the motor's voltage is gradually increased to the rated voltage. With this step-free control of motor voltage, the motor can be adjusted according to the load characteristics of the driven machinery, enabling smooth acceleration of mechanical equipment. This significantly improves the operational performance of the equipment and extends its service life. In summary, soft starting and soft stopping effectively protect connected equipment, ensuring smooth and reliable production operations.

Hot Tags: solid state soft starter, China solid state soft starter manufacturers, suppliers, factory, three phase soft starter, variable frequency drive motor starter, 25 hp soft starter, vfd with bypass dol starter, 200 hp soft starter, reduced voltage solid state starter