Electromagnetic Induction Heater & 20KW Magnetic Heater for heating plastic injection molding machine



Advantage Comparison | ||
Electromagnetic Induction Heater | Traditional Heater | |
Heating Principles | Electromagnetic Induction | Heating the Resdistance Wire |
Heated Part | Charging barrel is heated directly to get higher efficiency ,but the induction coil itself is not heated to guaratte longer using life | heater itself,then heat transfered to the charging barrel |
Surface Temperature & Safety | Max. 60 Degree Centigrade,safe to touch by hands. | The same with your heating temperature, Dangerous to touch |
Heating Rate | High Efficiency:save 50%-70%warming -up time | Low Efficiency:No time-saving |
Energy Saving | Save 30-80% Power Consumption | No Saving |
Temperature Control | High precision | Low Precision |
Using life | 4-5year | 2-3year |
Working Environment | Normal temperature for workers,easy and comfortable | Hot,especially for low latitude Area |
Cost | Cost-effective,with30-80% energy-saving rate,it takes 6-10 months to recover the cost. The higher the rate is,the less time it takes. | Low |







Technical Parameters
Item |
Technical Parameters |
rated power | 3phases, 20KW,50/60Hz,380V (Can be customized) |
Rated input current | 27-30(A) |
Rated output current | 30-50(A) |
Rated voltage frequency | AC 380V/50Hz-60Hz |
Voltage adaptation range | constant power output at 300 ~ 400V |
Adapt to ambient temperature | -20ºC~50ºC |
Adapt to environmental humidity | ≤95% |
Power adjustment range | 20% ~ 100% stepless adjustment(That is: adjustment between 0.5 ~ 20KW) |
Heat conversion efficiency | ≥95% |
Effective power | ≥98%(Can be customized according to user needs) |
working frequency | 5~40KHz |
Main circuit structure | Full bridge series resonance |
Control System | The DSP-based high-speed automatic phase-locking tracking control system |
Application mode | Open application platform |
monitor | Programmable digital display |
start time | <1S |
Instantaneous overcurrent protection time | ≤2US |
Power overload protection | 130% instantaneous protection |
Soft start mode | Fully electrically isolated soft start heating/stop mode |
Support PID adjustment power | Identify 0-5V input voltage |
Support 0 ~ 150 ºC load temperature detection | Accuracy up to ± 1 ºC |
Adaptive coil parameters | 20KW 10 square line, length 60m, inductance 250 ~ 300uH |
Coil to load distance(Thermal insulation thickness) |
20-25mm for circle, 15-20mm for a plane, 10-15mm for ellipse and within 10 mm for superellipse |


