How to choose inverter thyristor for tungku peleburan induksi?

1) Pilih miturut rentang frekuensi operasi saka tungku peleburan induksi;

The frequency is 100HZ—500HZ and the selected turn-off time is 20µs-45µs KK type thyristor.

The frequency is 500HZ—1000HZ and the selected turn-off time is 18μs-25μs KK type thyristor.

The frequency is 1000HZ—2500HZ and the selected turn-off time is 12μs-18μs KK type thyristor.

KKG-type thyristor with a frequency of 2500HZ—4000HZ and a selected turn-off time of 10µs-14µs.

The frequency is 4000HZ—8000HZ, and the selected turn-off time is 6μs—9μs KA type SCR.

2) Pilih miturut daya output tungku peleburan induksi;

According to the theoretical calculation of the parallel bridge inverter circuit, the current flowing through each thyristor is 0.455 times the total current. Considering that enough space is left, a thyristor with the same size as the rated current is usually selected.

Thyristor 300A / 1400V saiki sing dipilih kanthi daya antarane 50KW lan 100KW. (380 V tegangan fase-in)

Thyristor 500A / 1400V saiki sing dipilih kanthi daya 100KW-250KW. (tegangan fase-in 380V)

Thyristor 800A / 1600V saiki sing dipilih kanthi daya saka 350KW nganti 400KW. (380 V tegangan fase-in)

Thyristor 1500A / 1600V saiki sing dipilih kanthi daya antarane 500KW lan 750KW. (380 V tegangan fase-in)

Thyristor 1500A / 2500V saiki sing dipilih kanthi daya antarane 800KW lan 1000KW. (660 V tegangan fase-in)

Thyristor 2000A / 2500V saiki sing dipilih kanthi daya 1200KW-1600KW. (tegangan fase-in 660V)

Thyristor 2500A / 3000V saiki sing dipilih kanthi daya antarane 1800KW lan 2500KW. (1250 V tegangan fase-in)