After the renovation of the new home, when you stay, all kinds of electrical appliances will follow. Every decoration will make more or less modifications to the original circuit. When the electrical appliances are in place, you may find that when using electrical appliances It may trip at the time, which caused a lot of trouble. This is the case in my family. Distribution Transformer,Electric Oil Type Distribution Transformer,Oil Type Distribution Transformer,Oil-Immersed Special Transformer Shaoxing AnFu Energy Equipment Co.Ltd , https://www.sxanfu.com
Now let me introduce how to judge the cause of the line trip. If you can do it yourself, you can eliminate it yourself, because people's property will not control your indoor line, because you have made a transformation. So you can only do it yourself or ask for help.
First, let's talk about our wiring. After the bus enters the unit, it is divided into two lines, that is, the gate box of our unit door. One line is to the basement for the basement, and the second line is to the indoor. There is also a small lock box in the room for dividing each sub-line, including: lighting, ordinary socket, air-conditioning socket, kitchen socket, bathroom socket, spare. When the line is out of order, it is easy to disconnect its circuit without affecting the entire power consumption.
Second, the favorite thing is the kitchen circuit, because the kitchen is the place with the most electrical equipment, refrigerators, induction cookers, microwave ovens, hoods and so on. All are heavy-duty electrical equipment. This is one of the reasons for the trip, that is, when the load of the electrical equipment is too large, the air open (also known as the molded case air circuit breaker) trips.
Briefly introduce the principle of tripping: the air switch is also called the molded case air circuit breaker, the indoor distribution box is all open, and the switch in the large distribution box is the combination of the open and the leakage protector. When you close the lower opening, remember to press the blue button. Air-opening is designed to protect the normal use of household appliances. There are two reasons for tripping. One is overvoltage. The overvoltage is the voltage that can be withstood by the open air. The second is overcurrent. The overcurrent is the rated current exceeding the open.
Check the line trip First, check whether the voltage at the incoming line is normal. Generally use a multimeter. The normal voltage at the incoming end is between 198V and 235.6V, which is what we call 220 volts. If the voltage is too high, be sure to look for the property to check, the power supply line voltage is too high, which is very dangerous, generally occurs in the "three-phase four-wire" system power supply. At this time, look at whether the line is powered by two lines; second, see if the neighbors are also tripping; three use a multimeter to measure the incoming line voltage. Do not force the low-voltage circuit breaker to be closed. Otherwise, the appliance will be burnt out, and the fire will be caused by the heavy one. I have had this situation in my home. I used the electric pen to check the incoming line. The live and neutral lines are fully charged. This means that the fire and the zero line are shorted. Fortunately, it is a one-phase line. If it is wrong, When connected to a two-phase line, my home will become the voltage of 380, and the line and the bulb will all burn out in an instant.
If it is too low, it may be a peak in electricity consumption, and the terminal voltage is too low.
The inspection is divided into three items, one is empty, the other is the line, and the third is the electrical equipment.
Check the overcurrent first to see the power of all your powered devices, how many kilowatts. The general induction cooker is 2000 watts. Add the power of all your powered devices, divide by 220, you will calculate the current of your home, and each open is marked with the rated current, generally 5A 10A. If the rated current of the open air is exceeded, it will fall to the overload and jump. This will have to replace the larger opening. The kitchen usually uses four flat lines. The maximum current that the four flat lines can withstand is 25A. That is to say, the current value of all your appliances should not exceed 25A. If it is over, it may burn the line. For example: use only one induction cooker, 2000/220=9A. That is to say, you need to use 10A for the empty opening. It should not be too high or too low. It is just right. The air is too high to protect. Too low, the appliance can't be used.
Another cause of overcurrent is the short circuit of the circuit. Generally, there are kitchen lines, fire, zero, ground, and three lines. The fire line is easy to identify, can be detected with the electric pen, and the zero line and the ground line are not easy to find out. I originally thought that if the fire line is connected, the zero line and the ground line are connected incorrectly. It will cause the fire line to be grounded and jump directly. This is not the case after consultation. If the live line and the neutral line, and the ground line, which is directly shorted, it will short-circuit and trip. If it passes through the electrical equipment, it will be different and can be used. If the fire is connected to the ground, but when the electrical leakage occurs, the user's safety cannot be protected because the ground wire is directly connected to the earth and has not been opened. Therefore, it is still recommended to pick up the zero and the ground. The solution is to disconnect the grounding wire of the small distribution box, close the air to see if all the sockets can be used. If it is not available, it means that the zero ground is reversed.
The cause of the trip is to check whether the air-opening is normal. The poor installation is one of the causes of the trip. The wiring of each contact is not connected firmly, and the looseness of the contact for a long time will cause the contact to generate heat, oxidize, burn out the insulation of the wire, and Sparks and burnt smells, causing undervoltage on the line and tripping of the air switch. Or the air quality is poor, causing the air to open automatically. The inspection method is as follows: connect the electric terminal line to the spare open space, conduct a power test to see if it trips, and if it jumps, it means a problem of the line and the electric equipment.
Check the trip is also divided into a variety of situations: such as the trip and jump, the total gate does not jump, which indicates the indoor problem; the total gate jump, the trip does not jump, indicating that the entire power line exceeds the total load of the total gate can be loaded; A certain power device jumps without him, and the other does not jump, indicating the problem of the power device.