SGQH high voltage solid state soft starting cabinet

overview

SGQH series high-voltage solid-state soft-starting device applies power electronics technology, microprocessing technology and modern digital control theory to connect multiple high-voltage and high-power thyristor components in series and parallel, and controls the output voltage by controlling the trigger angle of the thyristor. To meet the different current and voltage requirements in the motor starting process, the motor gradually increases the terminal voltage according to the preset starting curve during the starting process until the motor reaches normal speed, the bypass vacuum contactor or circuit breaker is connected, and the motor is started. This smooth acceleration of the motor reduces the electrical and mechanical impact on the grid, the motor itself, and connected equipment when the motor starts. After the motor starts smoothly, the unit's monitoring unit continues to monitor the motor and provide various fault protection.

Performance Features

◆ Adjustable parameters, various starting methods

SGQH series high-voltage solid-state soft starting device can set various starting parameters on site according to the actual load situation, change the starting mode, and revise various protection parameters to better meet the actual starting needs. The appropriate starting current can be set according to different loads, so as to effectively avoid the sudden drop of the voltage of the rabbit grid; by smooth starting, the mechanical impact of the motor can be avoided, and the electrical impact on the switchgear can be reduced, and the service life of all mechanical components can be extended.

◆ Stable starting performance and high repeatability

SGQH series high-voltage solid-state soft starting device adopts electronic modular design and uses high-speed digital signal processing DSP for digital control. Under the condition of consistent setting parameters, the performance of each start is exactly the same, and it will not be affected by the ambient temperature. Can withstand wide ambient temperature changes without causing changes in starting performance.

◆ Small size, long life, easy installation and maintenance

SGQH series high-voltage solid-state soft-start devices use high-voltage power electronic devices, so the entire device is much smaller than traditional devices. Thyristors are touchpoint-free electronic devices that can operate millions of times. Unlike other types of products, which require frequent maintenance of liquids and components, etc., the mechanical life is changed into the service life of electronic components, so the service life is long, and there is no need for downtime maintenance for several years of continuous operation.

SGQH series high-voltage solid-state soft-start device is a complete motor starting control and protection system. It only needs to connect the power cord and motor cord during installation to put it into operation. The device has no movable parts, so it is basically maintenance-free and easy to install.