There are many devices with fast and frequent load changes in modern industry. At such time, AC contactors cannot meet the switching immediate needs of the system for var compensation.The thyristor rapid compensation switching device with the "zero-cross switching" operation concept can be used, which can achieve extremely fast switching and disconnection operation without arc or surge current.
product description
The KLD thyristor switching device is free of mechanical wear, and free of noise during operation and has the advantage of virtually no transient process, meaning that the power factor is improved with minimal delay. The control system controls the shortest period of time for switching-on and off the capacitor banks in all segments is only one cycle.
Features
High-speed real-time compensation function: The advanced technology of thyristor control can easily be compensated within20ms, which can meet any frequent and rapid industrial load requirements.
No input inrush current: The capacitor is only input into the system when the voltage difference between the two ends of the thyristor is zero and synchronized. Therefore, there is no common contactor switching. The surge current caused by difference in voltages between the two terminals eliminates the faults and disturbances that may be caused by inrush current.
No transient current when cutting off: The zero-crossing switching controller will control the capacitor to disconnect from the circuit at the instant when current value in the sine wave is zero, which can ensure free of transient current during disconnection of capacitor and avoid removal of instantaneous arc by the capacitor and its damage, which greatly increase the safety of use.
No limit on the number of switching operations: With the characteristics of "zero-cross switching", it can switch capacitors or capacitor banks very frequently and safely.
Extend the service life of capacitor: Since the thyristor switch has no surge or transient current, there is no damage to the insulating medium of the capacitor due to the traditional form of switching inrush current transient, which greatly extends service life of capacitor and saves cost of routine maintenance and replacement.
Long-term benefits of overall cost: Not only are the electricity expenses greatly saved due to the ideal var improvement, but the life of capacitor is greatly extended, and the overall cost and operating cost are more economical from long-term evaluation.
Application areas
Occasions where reactive power changes quickly and frequently.
Occasions where inrush current and voltage fluctuation are restricted.
Technical Parameters
Rated voltage:230V~690V,50/60Hz
Rated Capacity: 15kvar-60kvar, reactor with reactance rate of up to 14% can be connected in series
Response time:1~20ms
Driving voltage:DC 12V
Protection rating:IP20 (Others can be customized)
Temperature protection: Fan control at 40℃, Module disconnection at 80℃
Ambient temperature:-25℃~+50℃
Relative humidity:Maximum 95%
Altitude:Regular 2000m, customizable for higher altitude
Technical standards:IEC 60439, IEC 146
Type selection of KLD-Thyristor switching device
