How to choose inverter thyristor for induction melting rauv?

1) Xaiv raws li kev khiav hauj lwm zaus ntawm qhov induction melting rauv;

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) Xaiv raws li qhov tso zis hluav taws xob ntawm induction melting rauv;

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.

Cov xaiv tam sim no 300A / 1400V thyristor nrog lub zog ntawm 50KW thiab 100KW. (380V theem-hauv voltage)

Cov xaiv tam sim no 500A / 1400V thyristor nrog lub zog ntawm 100KW-250KW. (380V theem-hauv voltage)

Cov xaiv tam sim no 800A / 1600V thyristor nrog lub zog ntawm 350KW txog 400KW. (380V theem-hauv voltage)

Cov xaiv tam sim no 1500A / 1600V thyristor nrog lub zog ntawm 500KW thiab 750KW. (380V theem-hauv voltage)

Cov xaiv tam sim no 1500A / 2500V thyristor nrog lub zog ntawm 800KW thiab 1000KW. (660V theem-hauv voltage)

Cov xaiv tam sim no 2000A / 2500V thyristor nrog lub zog ntawm 1200KW-1600KW. (660V theem-hauv voltage)

Cov xaiv tam sim no 2500A / 3000V thyristor nrog lub zog ntawm 1800KW thiab 2500KW. (1250V theem-hauv voltage)