Thyristor Switching Device
The MDQT series thyristor switching device uses a microcontroller as the main controller. Based on system load requirements, it works in conjunction with a power factor controller and capacitor-reactor banks of corresponding voltage levels to achieve rapid response and improve the power factor of the grid.
Product Features:
• Rapid response to power factor controller commands, switching time ≤ 20 ms
• Smooth switching of capacitors when both voltage and current cross zero
• Designed with a heat dissipation system enabling fanless natural cooling for stable operation
• Switching via power electronics—no wear, no oxidation, longer MTBF, and simplified maintenance
• Real-time display of thyristor switching count and cumulative operation time (in hours) via a digital tube display
• High-capacity design with 30 kVar and 60 kVar step switching
• Built-in temperature sensor for high-temperature protection
• Limits inrush current impact on the MDQT during capacitor switching
• LED indicators for: operation status, ON/OFF state, high-temperature alarm, phase loss alarm, undervoltage alarm
