The intermediate frequency furnace often trips

First, determine whether the secondary protection circuit sends a protection signal to trip or the main circuit breaker trips automatically.

Most of them are secondary protection problems of secondary harmonic interference at the frequency of intermediate frequency furnaces, and the general solution is to add anti-jammers to the voltage and current acquisition circuit, and all secondary signal lines (shielded wires) are grounded at one point at one end. Generally solvable.

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Causes and solutions for frequent tripping of intermediate frequency furnaces:

1. The damage of the potentiometer of the intermediate frequency furnace or the voltage failure of the potentiometer usually leads to the occurrence of this phenomenon, and the potentiometer should be replaced in time when encountering this phenomenon.

2. Overcurrent protection action.

Due to the low setting value of primary overcurrent protection or secondary overcurrent protection, the phenomenon of multi-current protection circuit action, at this time, the current protection setting value should be amplified;

Due to the phenomenon of overcurrent protection circuit operation caused by circuit interference, a flat-wave reactor should be added to the circuit to weaken the interference of the circuit.

3. The load increases greatly.

However, the DC equivalent resistance of the load is too small, resulting in low DC voltage and large DC current, resulting in the phenomenon of difficult circulation and subversion of the inverter circuit. The induction coil should be replaced so that the load equivalent resistance increases.

4. The light load causes the DC voltage and the intermediate frequency voltage to reach the rated value, but the intermediate frequency current is very small, and the intermediate frequency power does not reach the rated value.

5. The withstand voltage of the electric heating capacitor is reduced or the electric heating capacitor base is discharged due to impurities such as dust, water, oil, etc.

At this time, the copper plate on the capacitor should be removed and tested with a 1000V megohmmeter. If it is not insulated, clean up the dust, water, oil and other impurities on the base of the electric heating capacitor or replace the capacitor in time.

6. Due to the short circuit between turns of the induction coil or the short circuit of the induction coil to the ground, the phenomenon of over-voltage protection circuit or over-current protection circuit action occurs. At this time, the induction coil should be inspected to ensure that the coil turns are clean, and the arc powder and dust around the induction coil should be cleaned.

Manufacturers can't find the reason. Khan

Hello, dear. 1. The reasons for the tripping of the leakage protector of the electric boiler: 1. The current that the leakage protector can withstand is relatively small; 2. Poor contact between the wire and the leakage; 3. The power cord is too thin and heated; 4. The leakage protector itself is damaged.

5. Leakage of the main engine. 2. Tripping solution of electric boiler leakage protector: 1. Replace the adaptive current and leakage protector or open empty; 2. Fix the contact point between the power cord and the leakage protection; 3. Replace the copper-core power cord that adapts to the current; 4. Replace the leakage protector or air switch; 5. Send it to a professional maintenance point for maintenance.

First, as long as the switch is closed, there will be a tripping phenomenon, which is mainly due to the mismatch between the size of the switch and the voltage of the boiler, which is generally less than the rated voltage of the electric boiler. At this time, what needs to be solved is to replace the larger switch, the specific matching of the electric boiler and the wire, please read how to distribute the meter and wires of the electric boiler.

Second, close the power switch, and the boiler will work for three minutes before tripping. If there is no E2 in the machine, it should be a switch load, and we need to check the quality of the switch or check whether it is loaded. The solution is to replace the switch.

Second, if E2 appears on the machine, it means that the machine is leaking, and the leakage protection switch is automatically disconnected, and then we need to contact the manufacturer's staff for the maintenance of the electric boiler.

Finally, there may be some other problems in the use of electric boilers, which requires us to personally carry out electric boiler maintenance, and we should also pay attention to understanding some small knowledge of electric boiler maintenance. In this way, the electric boiler can be used better.

When the intermediate frequency electric furnace is opened, it will automatically trip, that is, when the intermediate frequency electric furnace is opened, when the intermediate frequency start switch is opened, the switch of the main circuit will be protected by tripping or overcurrent protection.

Failure Cause Analysis:

When the circuit of the current regulator fails, especially when the current transformer is damaged or the connection line is broken, if there is no current feedback suppression, the DC voltage will directly reach the maximum, and the DC current will directly reach the maximum value, resulting in the electric furnace enabling overcurrent protection or the switch of the main circuit tripping protectively. In addition, it may be that the power adjustment knob of the intermediate frequency electric furnace is placed at the highest place. In addition to quenching the load, other load equipment must be placed in the minimum position of the power adjustment knob when starting, if it is not in the minimum position, it will cause overcurrent protection or make the main circuit switch to protect or trip the main circuit switch because of the excessive impact of the current.

Ways to resolve failures:

Verify whether the current transformer has been damaged; Whether there is an open circuit in the distance between the current transformer and the circuit board; Whether there is damage or open circuit of the components in the current regulator part.

If the circuit of the current regulator fails, especially when the current transformer fails or when the wiring is open, turn on the non-current feedback control, the DC voltage can reach the maximum value, and the DC current can directly reach the maximum value, which may lead to overcurrent protection or the switch of the main circuit tripping.