What is the reason why the leakage switch will heat up, and what is the reason why the switching pow

There are two main causes of heating: one is that the circuit is overloaded and the current through the circuit breaker is too large. The second is whether the contact of the inlet and outlet lines of the circuit breaker is loose, and check whether there is a false connection, which is also the main reason for heating.

The original is 63A, the new is 60A, the difference is 3A, not the main problem, the key is to use the electrical plug or whether the line is in good contact, if there is no good contact, it will be heated, resulting in a large current, causing the leakage switch to heat up, and the connection of the electrical appliances should be checked.

What is the reason for the total burning leakage switch of the fast heating electric water heater, hello dear, the general situation is caused by the deformation caused by the high current and the heating of the contacts. 1. The leakage protection plug of the water heater is generally 10 A or 16 A; 2. The power of the electric heating pipe of the water heater is between 2000 watts and 3000 watts; 3. The leakage plug is generally close to full load work, and the contact will be heated and oxidized because of the large current. Hope it helps.

The heating of the switching power supply is caused by the loss, and the loss of the switch tube is composed of two parts: the switching process loss and the on-state loss, and the on-state loss can be reduced by selecting the switch tube with low on-state resistance.

The switching process loss is caused by the gate charge and the switching time, and the switching process loss can be reduced by choosing a device with faster switching speed and shorter recovery time. But more importantly, it is important to reduce losses by designing better control methods and buffering techniques, such as soft switching technology.

To reduce the heat generation of the power diode, there is generally no better control technology to reduce the loss of AC rectifier and buffer diode, and the loss can be reduced by selecting a high-quality diode. For the rectification of the secondary side of the transformer, a more efficient synchronous rectification technique can be selected to reduce losses. For the loss caused by high-frequency magnetic materials, the skin effect should be avoided as much as possible, and the effect caused by the skin effect can be solved by using the method of winding multiple strands of fine enameled wire.

Change a stable load to test the performance of your power supply, if the heat is reduced, or the temperature rise is not high, it proves that the power quality is okay, otherwise the power supply quality is not good, and the power supply needs to be replaced.

Secondly, with such a small current, a large part of the power is consumed inside the power supply, which is also a cause of heat generation. The internal structure design of this switching power supply may be problematic, and it is not good for the load.

Summary. Hello, the upper end of the leakage switch is generally the inlet end<> what happens to the heating of the upper end of the leakage switch.

Hello, the upper end of the leakage switch is generally the <> of the inlet end

It's the incoming end. The causes of fever are as follows:1The wire is not locked, and the virtual connection causes heat 2If the wire diameter is too small, the current is too large and causes heating.

2 wires of 10 squares.

3.The binding post oxidizes, causing the resistance to become larger, causing heat generation.

2 at one end. Hello dear, is 10 flat copper wire or aluminum wire<> how much power is the load<>

Aluminum wire. Compared with copper wire, the current of aluminum wire can be smaller<> normally, the safety current of the load of single-phase 10-flat aluminum wire is about 30A.

The lines are a little dark.

Hello dear. This is the heating of the cable caused by overcurrent<>

Always tripping. It is recommended that according to the size of your load current, replace the thicker copper wire, and then replace the leakage switch with the <> that matches the load

The size of our cable and the size of the leakage protection switch should be selected according to the size of the load. And it is better to choose copper wire <>

The switching power supply will leak current, which may be that it is not grounded.

1. The ground wire is connected by 2 Y capacitance neutral balance grounding methods, (fire --- ground --- zero) this method defeats if the grounding of the socket is good, there is no problem, but if the socket ground wire is virtually connected, at this time the ground wire with 110V (may be higher and lower) equivalent potential, if this electrical appliance is grounded in a metal shell, it is possible that the entire shell is electrified, the electric pen will be bright, and it will be numb to the touch.

2. The high-voltage side and low-voltage side of the switching power supply (that is, the 2 sides spanned by the optocoupler, there will be obvious distance separation between the 2 sides of the circuit board) will generally have an EMI capacitor (some power supplies may also be connected in parallel with a high-impedance resistor (rare)), which is also the reason why the switching power supply has leakage current.

3. The real induction electricity, as long as it is a power supply, regardless of whether it is a power frequency or a switching power supply, there will be an equivalent capacitance on the high-voltage and low-voltage side of the main transformer, which can be regarded as the second situation, and there will be a trace of leakage current, which cannot be avoided.

The switching power supply will leak current, which may be that it is not grounded.

1. There are 2 Y capacitors connected to the ground fiber cable in a neutral grounding mode, (fire --- ground --- zero) if the grounding of the socket is good, there is no problem, but if the socket ground wire is virtually connected, at this time the ground wire with 110V (may be higher and lower) equivalent potential, if this electrical appliance is grounded in a metal shell, it is possible that the entire shell is electrified, the electric pen will be bright, and it will be numb to the touch.

2. The high-voltage side and low-voltage side of the switching power supply (that is, the 2 sides spanned by the optocoupler, there will be obvious distance separation between the 2 sides of the general circuit board) will generally have an EMI capacitor (some power supplies may also be connected in parallel with a high-impedance resistor (rare)), which is also the reason why the switching power supply has leakage current.

3. The real induction electricity, as long as it is a power supply, whether it is a power frequency or a switching power supply, there will be an equivalent capacitance on the high-voltage and low-voltage side of the main transformer, which can be regarded as the second kind of selling situation, and there will be a trace of leakage current, which cannot be avoided.