How to choose inverter thyristor for induksion eritish pechi?

1) Induksion eritish pechining ish chastotasi diapazoni bo’yicha tanlang;

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) Induksion eritish pechining chiqish quvvatiga ko’ra tanlang;

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.

Tanlangan oqim 300A/1400V tiristor 50KVt dan 100KV gacha quvvatga ega. (380V fazali kuchlanish)

500KW-1400KW quvvatga ega tanlangan oqim 100A / 250V tiristor. (380V fazali kuchlanish)

Tanlangan oqim 800A / 1600V tiristor 350KV dan 400KV gacha bo’lgan quvvatga ega. (380V fazali kuchlanish)

Tanlangan oqim 1500A/1600V tiristor 500KVt dan 750KV gacha quvvatga ega. (380V fazali kuchlanish)

Tanlangan oqim 1500A/2500V tiristor 800KVt dan 1000KV gacha quvvatga ega. (660V fazali kuchlanish)

2000KW-2500KW quvvatga ega tanlangan oqim 1200A / 1600V tiristor. (660V fazali kuchlanish)

Tanlangan oqim 2500A/3000V tiristor 1800KVt dan 2500KV gacha quvvatga ega. (1250V fazali kuchlanish)