COMPLETE EQUIPMENT FOR INDUCTION HEATING
Thyristor frequency converter has been reconstructed for the company of CPF Plzeň. Together with three-phase separating transformer and the load of oscillatory circuit it is used for induction heating of rod ends SOT 400/2,1.
The aim of the reconstruction was to increase the reliability of its operation and to change the frequency range from original 500 - 1500 Hz to 700 - 2100 Hz. During the reconstruction the current regulator SMK-UB with fifteen units was replaced by a new one containing four basic units with advanced integrated circuits CMOS. Also Programmable Logic Controller was added and water system including the thyristor coolers was changed.
| Nominal input values (power circuits) | ||
| Power Input [kVA] | 455 | |
| Input voltage from separating transformer [V] | 3 x 400 | |
| Frequency [Hz] | 50 | |
| Nominal input values (control circuits) | ||
| Power Input [kVA] | 3 | |
| Voltage [V] | 3 x 400 | |
| Frequency [Hz] | 50 | |
| Cooling water (external cooling loop) | ||
| Consumption [m3/h] | 4 | |
| Input temperature [°C] | max. 30 | |
| Input pressure [MPa] | max. 0,4 | |
| Pressure loss [MPa] | 0,12 | |
| Maximum warming thru loop [K] | 5 | |
| Cooling water (internal cooling loop) | ||
| System capacity [l] | 25 | |
| Nominal output values | ||
| Output [kW] | 400 | |
| Nominal output voltage [V] | 600 | |
| Frequency [kHz] | 0,7 - 2,1 | |
| Ostatní parametry | ||
| Dimensions (d x š x v) [mm] | 1800 x 800 x 2200 | |
| Weight [kg] | 1800 | |
| Cabinet | IP 43 | |
| Color | - | |
