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    Electric furnace technical parameters
        

    Saving three tons steel melting furnace proper use

    (A) connecting three tons steel melting furnace main terminal and a secondary line

    1 , the main wiring:

    The power supply line is made of copper core cable, and the cross-section of each phase is not less than the listed value.

     

    rated power

    KW )

    Three-phase incoming cross-sectional area ( mm2 )

    100

    100

    The power supply and load are connected by ( 4 mm2 ) 25 sets of two-color stranded wires, and the contact at the joint should ensure good and reliable.

    2. Note: The main cabinet and the capacitor load cabinet must be reliably connected to the ground.

    (B) prior to start checking the steel melting furnace 3 t:

    Check that all components are in good condition;

    Check that all fasteners are in good condition;

    Check if all the wires are disconnected and whether the solder joints are desoldered;

    Check if the connection in the installation is correct;

    Check the main circuit with a multimeter, and control the insulation of the casing and the insulation between the phases;

    Check if the control plugin is placed correctly.

    Open the inlet valve and adjust the water pressure to 0.1 ~ 0.2Mpa to check for leaks in each waterway.

    (C) 3 t steel melting furnace transmission check:

    1. Strictly check the phase sequence. A correspondingly advances the phase B by 120  degrees, and C corresponds to the phase B of 120  degrees.

    2 , control power switch AQ1 , the power indicator of each control board should be on.

    3. Check the rectification and inverter trigger pulses with an oscilloscope.

    4. Trigger the protection thyristor and the corresponding protection indicator lights.

    5. Set the power potentiometer to 0 position, dial out the control board, and check that the relay action should be normal.

    D) 3 t steel melting furnace Procedure

    1. The operation instructions are shown in Table 3.

     

    Serial number

    Name

    symbol

    Use

    1

    AC voltmeter

    M1

    Indicating AC incoming line voltage

    2

    DC ammeter

    M3

    Indicates the main circuit DC current

    3

    DC voltmeter

    M2

    Indicates the main circuit DC voltage

    4

    Output voltmeter

    M4

    Indicates the output peak voltage

    5

    Control power indicator

    LM1

    Lights up to indicate that the control loop is powered

    6

    Main power indicator

    LM2

    Lights up to indicate that the main circuit is powered

    7

    Inverter work indicator

    LM3

    Lights up to indicate that the power supply is working

    8

    Over current indicator

    LM4

    Lights up to indicate that the power supply has an overload or short circuit fault.

    9

    Overvoltage indicator

    LM5

    Lights up to indicate that the power supply has an overvoltage fault.

    10

    Low water pressure indicator

    LM7

    The water pressure is low until the setting value is on, the power supply cannot be started or automatically stopped.

    11

    Control button

    AQ1

    Control system power supply after pressing

    12

    Control sub button

    AT1

    Control system is powered off after pressing

    13

    Main power button

    AQ2

    After pressing, the main circuit rectifier bridge and the power supply are closed.

    14

    Main power sub button

    AT2

    After pressing, the main circuit rectifier bridge and power supply are disconnected.

    15

    Inverter work button

    AQ3

    Power is ready to start after pressing

    16

    Inverter stop button

    AT3

    After the inverter is pressed, the inverter bridge stops working and the protection system is reset.

    17

    Power adjustment potentiometer

    W2

    Adjust to zero position before starting. Turn the knob clockwise after starting, the power output power increases

    18

    Temperature alarm indicator

    LM6

    If the water temperature exceeds the setting value, the power will not start or stop automatically.


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    Tel:18037961302 Sales hot line ( 24 hours service): 18037961302
    E-Mail:firstfurnace@gmail.com
    Adress: Luoxin Industrial Park, Luoyang, Henan