QGR series high-voltage solid-state soft start deviceDetailed product description：

The QGR series high-voltage solid-state soft start device is a device used for frequent starting of high-voltage large squirrel cage motors. It utilizes advanced technologies such as series and parallel connection of thyristor valve components, computer technology, electromagnetic compatibility technology, information processing technology, low-power technology, and high-voltage technology to reduce harmful impacts on the power grid and equipment during motor starting. During soft stopping, it can avoid damage to equipment caused by sudden stopping. Greatly reduce the footprint of startup devices. The thyristor soft start device is the leading product of contemporary high-voltage soft start, which saves comprehensive investment costs, extends motor life, and has significant energy-saving effects.
The QGR series high-voltage motor solid-state soft start device can be widely used in industries such as steel, chemical, metallurgy, building materials, coal mining, and shipbuilding.

Working Principle:
The QGR series high-voltage solid-state soft start device is connected in series between the three-phase AC phase voltage and the input terminals of the three-phase AC asynchronous and synchronous motors. By simultaneously adjusting the delayed conduction angle of three independent anti parallel thyristor valve components, the amplitude of the AC input voltage of the three-phase asynchronous and synchronous motors is changed, thus changing the effective value of the three-phase input AC current, achieving the purpose of constant current starting or starting (stopping) according to a certain slope curve. After the start-up is completed, the output voltage of this device reaches the rated value. For the QGR series high-voltage solid-state soft start device, the three-phase bypass contactor J will be automatically controlled to close, and the motor will be put into operation on the power grid.

Performance characteristics:
1. Wide applicable voltage and power range, can be used with motors up to 6KV-10KV/20000KW;
2 rich start stop modes, suitable for various types of loads;
3. Equipped with soft start and soft stop functions, as well as complete system protection functions;
4. Friendly human-computer interaction interface with high level of intelligence.

Ordering Notice:
When placing an order, please inform the supplier of the product model, specifications, load conditions, and usage conditions in order to select the correct product model.