Contact
Tel: 18037961302
Sales hot line ( 24 hours  service): 18037961302

E-Mail: firstfurnace@gmail.com

whatsapp:+8618037961302

Adress: Luoxin Industrial Park, Luoyang, Henan
  • Products
  • 2T intermediate frequency

    1T intermediate frequency

    1T series intermediate frequen

    0.25T series intermediate freq

    0.25T parallel intermedia

    0.5T intermediate frequency fu

    0.5T parallel intermediate fre

    Steel Melting Furnace

    3T Induction Furnace

    iron melting induction furnace

    Electric furnace building mach

    Z145W microseismic compaction

    300 kg induction melting furn

    400*400 Square manhole cover B

    Square manhole cover

    700mm*800mm Manhole cover B12

    700 KW Induction Heating Furna

    300 KW Induction Heating Furna

    250 KW Induction Heating Furna

    500kg Induction Melting Furnac

    500kg Metal Induction Melting

    1 Ton Aluminum shell Induction

    1 Ton Induction Melting Furnac

    2 Ton Aluminum Shell Induction

    2T Induction Melting Furnace Q

    3Ton Aluminum Shell Induction

    3 Ton Induction Melting Furnac

    5 Tons Hydraulic Steel Shell I

    Electric furnace principle
        How to choose the appropriate inverter thyristor for IF power supply
    In the process of designing the intermediate frequency power supply, how to select the appropriate inverter thyristor according to the actual application can follow the following principles:
    1. According to the working frequency range of the intermediate frequency power supply:
    a) KK-type thyristors with a frequency of 100HZ---500HZ with a selected turn-off time of 20μs-45μs.
    b) KK-type thyristors with a frequency of 500HZ---1000HZ with a selected turn-off time of 18μs-25μs.
    c) KK-type thyristors with a frequency of between 1000 Hz and -2500 Hz with a selected turn-off time of 12 μs to 18 μs.
    d) The selected off-time of the frequency at 2500HZ---4000HZ is controllable at KKG type of 10μs-14μs.
    e) KA type thyristor with a frequency of 4000HZ---8000HZ with a selected off-time of 6μs - 9μs.
    2. According to the output power of the intermediate frequency power supply:
    According to the theoretical calculation of the parallel bridge inverter circuit, the current flowing through each thyristor is 0.455 times of the total current. Considering that there is sufficient margin, the thyristor of the same size as the rated current is usually selected.
    a) The thyristor with a power of 50 kW----100 kW with a selected current of 300 A/1400 V. (380V phase-in phase voltage)
    b) The thyristor with a selected current of 500A/1400V with a power of 100KW--250KW. (380V phase-in phase voltage)
    c) The thyristor with a selected current of 800A/1600V with a power of 350KW-400KW. (380V phase-in phase voltage)
    d) The thyristor with a selected current of 1500A/1600V with a power of 500KW--750KW. (380V phase-in phase voltage)
    e) A thyristor with a selected current of 1500A/2500V with a power of 800 KW to 1000 KW. (660V phase-in voltage)
    f) The thyristor with a selected current of 2000A/2500V with a power of 1200KW-1600KW. (660V phase-in voltage)
    g) A thyristor with a current of 2500A/3000V with a power of 1800KW-2500KW. (1250V phase voltage)

    Copyright© 2007-2013 songdao Electric furnace manufacturing Co,.Ltd All Rights Reserved
    Tel:18037961302 Sales hot line ( 24 hours service): 18037961302
    E-Mail:firstfurnace@gmail.com
    Adress: Luoxin Industrial Park, Luoyang, Henan