Air switch tripped, what happened to air switch tripping?

The first thing to note is that your 12 kilowatt device, if it's 220 volts, should have about 54 amps. Obviously you don't match the load with a 40 amp switch. Why does your switch not jump and jump the main switch, I personally think that 1 The sensitivity of your 40A switch is not high, because the switch of 40A with your current load will definitely not be able to withstand 2 Although your load has a current of about 54A, the current will increase at the moment when the electrical equipment starts, so the 63A switch will sometimes jump.

3 If you're using a 380-volt electrical appliance, it's a different story.

I don't know if you use single-phase or three-phase, three-phase 40A is no problem, single-phase 40A is a bit of a problem, the capacity is obviously small, single-phase is recommended to use 100A, and there is a trip problem, this may be that your air switch is not sensitive enough to play a protective role, or it may be that the switch of the main switch is long in time, and it is easy to heat up due to aging, so it is easy to jump.

In addition, your total load is 12 kilowatts, its current is 54 a, the wire is 6 square wires, according to the calculation of the current carrying capacity of 5a, the bus should be in 10 squares, and 6 square meters will definitely heat up, which will also cause the air switch to heat up. You'd better change the 100A switch.

I think it should be your bus short-circuited, and the air switch will not trip if there is leakage, and your bus is also small, and how can 12 kilowatts use 220V voltage.

Is it small or insensitive?

A trip to a switch means that the wiring may be short-circuited or leaking, so we first check each household appliance for faults, and then check for temperature rise or burning on the wiring board. If you can't find out, you can unplug all the plugs in the house, plug them in one by one, and see which plug will trip, that's the problem. Once you've figured out the appropriate plug problem, you can fix it.

When the fault here is dealt with, go back and press the small square on the right side of the air switch, and then close the switch of the electric switch, you can successfully solve the problem of no power after tripping. However, Bian Xiao would like to remind everyone here that tripping circuit maintenance is dangerous. Non-professionals are not allowed to operate without permission.

If there is no electricity after the trip, a professional electrician from the property or maintenance company can come to the door**.

Circuit breakers (another name for household switches, also known as "null switches") are very clever and have internal protections designed to prevent the switch from burning out – when the switch burns out, it automatically closes and locks. This design is designed to prevent burned-out switches from disconnecting, leading to the danger of power consumption. Generally, the black marks left by the burnout can be seen from the surface of the burned out circuit breaker, which generally appears at the position of the binding post.

But it is not excluded that some circuit breakers are hot-fried, and the traces are hidden inside, and they cannot be seen from the outside. We can try to replace the circuit breaker, but don't forget to check the fault after replacing the circuit breaker: many times, the circuit breaker just burns out because of the end of its life.

In this case, it can be solved by replacing the circuit breaker. In some cases, after a fault such as a short circuit or lightning strike, the circuit breaker burns out. At this time, we need to install lightning protection devices on the road and check the short-circuit fault points before we can continue to use them.

1. In this kind of protection situation, the first time is to cut off all the power supply of the household electric elevator, after cutting off the power supply, on the one hand, it protects the household appliances, and on the other hand, it can also effectively eliminate the load end problem.

2. If the undervoltage protector still has a protection signal after cutting off all the power supplies of household appliances, then the voltage should be measured with a multimeter. The measured voltage is normal, but the protector is still flashing, that is the problem of this under-voltage protector, and replacing a new under-voltage protector can be used normally.

3. If Nianshan cuts off the voltage at the load end, there is no flashing signal in the protector, which means that there is a fault at the load end, and it is relatively troublesome to check, and it is necessary to use a point-to-point method.

4. In the last case, the above situation is that the incoming voltage is high or low, so it should be repaired in time to eliminate the problem that the voltage of the whole building or the entire line deviates from the normal value. Because the flashing lamp in this under-voltage protector is a protective lamp, but there is no indication of under-voltage or high voltage, so this flashing signal can only prompt that the voltage value is not within a reasonable range, and if you want to determine whether it is high voltage or low voltage, you can only use a multimeter to measure the voltage of the incoming line, if it is found that it deviates from the normal value, it means that the air switch protector is not damaged and bent, but the problem of the upper voltage entering the household. If it is a problem of the upper voltage entering the household, it is necessary to contact a professional property electrician or call the power supply company to report for repair, and do not force the power on to avoid damage to household appliances.

The first thing to observe is whether it trips uphill, uphill, downhill, or flat. If it only trips uphill, please check the main connection line of the power supply to see if there is any poor contact or loose connection; If not, see if there is a problem with the controller.

If it trips when opening the power lock, then it means that the body line has a short circuit, poor contact, and loose connection, if it trips when riding or going uphill, it means that the air switch is broken, of course, the controller requires too much current and will also cause tripping, in short, the air switch is burned out, and it can be replaced again. Or if it is aging and the quality is not good, you can change it to an air switch with the same voltage first.

In addition, the overload of the electric vehicle will also cause the electric vehicle to run too much, and then the air switch will trip in order to protect the circuit. In addition to the short circuit of the line, it may also be the leakage of the car body line, or the short circuit due to moisture. You can try to change the air switch, but if this problem still occurs, then you need to be tested by the maintenance master.

Because there may be a battery problem, a short circuit in the battery can also cause the air switch to trip.

An air switch, also known as an air circuit breaker, is a type of circuit breaker. The air switch is a very important electrical appliance in the low-voltage distribution network and the power drive system, which integrates control and a variety of protection functions. It is a switch that automatically disconnects whenever the current in the circuit exceeds the rated current.

In addition to completing the contact and breaking circuits, it can also protect the circuit or electrical equipment from short circuits, serious overloads and undervoltages, and can also be used to start the motor infrequently.

There are basically three situations when the air switch trips, the first is short circuit, the second is leakage, and the third is overload.

You can turn off the sub-switches first, and then you should be able to push the main switch (you can't push it is basically the main switch is broken), and then the sub-switches are closed one by one, and the main switch trips when you close the sub-switch, so you can know which route there is a problem, and then check the electrical appliances on this switch, or unplug some electrical plugs to see if there is a problem. This kind of problem is generally caused by sockets or lights, or it is caused by household appliances.

If your air switch is protected from leakage, then it may be caused by leakage in the electrical shell.

If your air switch is tripped for a period of time, then the possibility of overload is very large, first touch the shell, whether you feel the heat, and then you can turn on a few less appliances to see if it will trip, the best way is to use a current clamp to measure the current of the load connected to the air switch, if the actual current is greater than the rated value of the air switch, then it must be overload tripping.

Try to reset first and then start, if the second time is still tripping, then find out the real cause of tripping, eliminate the fault and then close. It is estimated that the dust in front of the pants is either leakage, Hu Chan tripping, or overcurrent tripping. You can first remove the electrical equipment to judge the scope of the fault, and gradually narrow it down to the point of regret on a certain equipment.