For frequency higher than 1MHz or other special application field, vacuum tube high frequency induction heating equipment is still irreplaceable with wide application.

Vacuum tube high frequency induction heating equipment converts the power frequency AC voltage to be adjustable high voltage DC voltage, with the matching of 3-phase AC voltage regulation circuit, step-up transformer, high voltage rectifying silicon stack (6-pulse or 12-pulse). The oscillating circuit adopts high frequency large power vacuum tube generating self-oscillation. Resonant tank circuit can adopt single circuit or triple loop.

1) Adopt good quality high frequency large power vacuum tube and high voltage vacuum capacitor to form resonant oscillator.

2) DC voltage regulating cabinet and high frequency oscillating cabinet can adopt integrated design for small power grade, or independent design for large power grade, which is convenient for layout at site.

3) Full digital AC voltage regulation control technology adopted, to ensure AC side 3-phase balance symmetry with small grid side non characteristic subharmonic content and high grid side power factor.

4) Vacuum tube self-oscillation circuit adopts optimal design, which has stable oscillation and high efficiency without parasitic oscillation, and suitable for ultrahigh Frequency induction heating field.

5) It has the perfect protection function of over voltage, over current, Loss of lock, temperature and water flow, with reliable operation and low failure rate.