If an appliance is given a short period of time, will the appliance turn off?

At the moment of voltage drop, the motor can be maintained by inertia, and the switching power supply can be maintained by capacitors. But there is a device that is afraid of voltage drops, AC contactors. It is a switchgear.

It is short to drop sustained and has poor tolerance for drop voltage. This is especially true for products with higher current ratings. When the AC contactor is used in a control system with self-locking interlocking logic, once the contactor coil is not powerful and jumps off at the moment of the power drop, then the whole system cannot work properly.

It does not engage automatically when the voltage is restored. It can also cause process disorders and cause economic losses. In general, in order to avoid this, it is possible to provide backup power to the contactor to maintain it or to automatically restart the process after a drop is detected.

The voltage drop belongs to the immunity category of electromagnetic compatibility, which is generally divided into emission and immunity, of which the voltage drop belongs to the domestic EMC not all electronic equipment must pass the project, but there will be relevant requirements in CE UL VDE and other certifications. For example, the EMC standard for some devices requires that the voltage drop of 30% for a duration of less than 10ms should be able to maintain normal operation. For example, the photovoltaic grid-connected system power station in some countries will have clear requirements for this kind of grid disturbance, and the equipment can achieve low voltage ride-through to ensure that the voltage drop will not be easily disconnected from the grid for a certain period of time.

In addition, many equipment consider the actual use requirements of uninterruptible power supply switching in the absence of power grids, and will achieve the requirements of power-free operation for a certain period of time by increasing the capacitance of DC bus. Since LZ does not specify how long a "very short time" means, it is not possible to have a qualitative analysis. <>

Summary. It won't work. In the case of power failure, the switch of the electrical appliance is useless, because there is no current, so the switch of the electrical appliance cannot be controlled.

The solution is: firstly, check whether the power supply is powered off, if the power is off, then check whether the power supply is faulty, if there is a fault, replace the power supply; Secondly, check whether the switch of the appliance is faulty, and if there is a fault, replace the switch; Finally, check the electrical appliance for faulty circuitry and if so, replace the circuit. In addition, it is also necessary to pay attention to safety, and when replacing the power supply, switches, and circuits, the power supply should be disconnected first to avoid accidents.

It won't work. In the case of power failure, the switch of the electrical appliance is useless, because there is no current, so the switch of the electrical appliance cannot be controlled. The workaround is:

First of all, check whether the power supply is powered off, if it is powered off, then check whether the power supply is faulty, if there is a fault, replace the power supply; Secondly, check whether the switch of the appliance is faulty, and if there is a fault, replace the switch; Finally, check whether the electrical circuit of the appliance is faulty, and if there is a fault, replace the circuit. In addition, it is also necessary to pay attention to safety, and when replacing the power supply, switch and electrical rotten circuit, the power supply should be disconnected first to avoid accidents.

I'm still a little confused, can you be more detailed?

No, the electrical switch has no effect in case of power failure. An electrical switch is an electrical component, its role is to control the flow of current in the circuit, when there is no current in the circuit, the switch cannot function. There are many types of electrical switches, such as ordinary switches, contact switches, proximity switches, relay switches, etc., all of which are used to control the flow of current in the circuit, but their principles are different.

The ordinary switch is controlled by the contactor, which can control the current in the circuit, while the contact switch is controlled by the magnet, which can control the current in the circuit, and the proximity switch is controlled by the sensor, which can control the current in the circuit, and the relay and mum switch is controlled by the relay, which can control the current in the circuit. In short, the switches have no effect in the case of power failure, because they are used to control the flow of current in the circuit disturbance hole, and in the case of power failure, there is no current in the circuit, so the switch cannot play a role.

Summary. Hello! The reason for the power failure and the solution of the electrical appliance is too much.

Power-off with high-power electrical appliances means that the empty opening capacity is small, and the large-capacity empty opening must be replaced. Short circuit. If there is a power failure when using an electrical appliance, there is a short-circuit problem, and it is necessary to electrify the electrical appliance one by one to determine the faulty electrical appliance.

Creepage. A leakage protector trip indicates that there may be a leakage problem in the circuit. The load is too great.

The upper limit fuse is too thin to withstand such a large load, resulting in a power outage.

Hello! The reason for the power failure and the solution of the electrical appliance is too much. Power-off with high-power electrical appliances means that the empty opening capacity is small, and the large-capacity empty opening must be replaced.

Short circuit. If there is a power failure when using an electrical appliance, there is a short-circuit problem, and it is necessary to electrify the electrical appliance one by one to determine the faulty electrical appliance. Creepage.

A leakage protector trip indicates that there may be a leakage problem in the circuit. The load is too great. The upper limit fuse is too thin to withstand such a large load, resulting in a power outage.

If you use a little more power at home, the power will be cut off, but it will not trip.

High voltage. When the voltage is high, the current is very large, which causes the current of the entire line to be too large and the fuse is blown out.

Solution 1, if the power is suddenly cut off when using electrical appliances, turn off all electrical appliances first, be sure to turn off all electrical appliances, and push the switch up again. 2. After the power is successfully turned on, turn on the electrical appliances slowly, be careful not to turn on too many electrical appliances at the same time, and exclude the high-power electrical appliances that cause power outages, and pay attention to their use in the future. 3. If an electrical appliance trips again after opening it, it is necessary to rule out that the power outage is caused by the overload caused by the excessive total power of the electrical appliance or the cause of the electrical leakage.

Usually, just the mobile phone is charged, the light is turned on, the refrigerator will not lose power, as soon as the washing machine or rice cooker is used, the power will be cut off, and it will be restored after a while.

If you use a little more power at home, the power will be cut off, but the reason and solution for not tripping are likely to be caused by the loosening of the clamp screws of the lamp switch or the main power switch. Once the wire is loose, it will cause the phenomenon of being connected or not connected, it is normal when there is no electrical appliance or low-power electrical appliances are used, when you turn on the light, due to the increased load, the clamp screw part will be ignited and accompanied by a sizzling sound. If it is serious, the power will be cut off for no reason, and after a while, the wire will cool down and return to normal.

It is recommended that you tighten the clamp screws of the switch and the main power supply, and the fault will be eliminated. 2. The reason for the power failure is that the screws of your switch clamp line are loose, and the power is cut off due to poor contact due to the increase of the heating gap after the load is increased. After the power failure, the load decreases, and the gap decreases after the screw cools down and temporarily returns to normal.

Hello! The above are the reasons and solutions for power outages when using electrical appliances.

But when I turn off the lights, I just use the washing machine, and the power goes out.

Make sure the power quality is ok, you separate the wiring of the washing machine from the light wire. Do not have refrigerators, washing machines, air conditioners and other electrical appliances on the power lines of washing machines.

Do electrical appliances need to be powered off after they are used up, what will happen if they are uninterrupted, do they need to be powered off after they are used up, and what will happen if they are uninterrupted, these electrical appliances need to be paid attention to the most.

Hi everyone, I don't know if you will lose power after using the electrical appliances, the power off here refers to the power cord completely cut off the power, I believe everyone's habits are different, some families will lose power, feel the need to save electricity, some families will not, because after unplugging the power cord next time it is inconvenient, it is better to keep the power on.

First: kitchen appliances, such as electric pots and kettles, as well as range hoods, ovens and other various, whether these should be powered off, for these cooking appliances used for heating, it is recommended that you unplug the power supply after use, because although these appliances are used frequently, they will only be used when cooking, although they will not consume much electricity without interrupting electricity, but this heating tool is still a little unsafe, such as the power button is broken, etc., and it may be plugged into the power cord and will be heated all the time.

As for other electrical appliances such as range hoods that are not used for heating, you can see if the power is cut off as needed, and of course you need to turn off the power if you go out for a long time.

Second: household appliances, some can not be cut off, such as the refrigerator water purifier at home, etc., since the refrigerator began to be used, even if there is nothing in the refrigerator, it can not be cut off for a long time, if the power is often cut off, it will be very easy to break, so in addition to the need for a long time to go out or maintenance, do not directly disconnect the power cord, the water purifier is mainly because you may have to connect to water at any time of the day, which is equivalent to a water pipe, so it is not recommended to cut off the power frequently.

Of course, there are some household appliances that need to be powered off,For example, the TV,Don't press the remote control even if it's turned off,Now the TV is damaged,There is a certain reason for lightning strikes and the reason for voltage or sudden power failure,Especially in rainy and thunderous weather,TV needs to be unplugged to avoid damage。

Then there are washing machines, air conditioners and other electrical appliances, if the power is not interrupted, it may always be in a standby state, it will consume electricity, and the power consumption may not be too large, but it has accumulated a lot over time.

Third: small household appliances, such as garment steamer vacuum cleaners, are generally not used too often, and may only have the opportunity to use once in a few days, so there is no need to power on all the time.

The power supply voltage may be unstable or the electrical appliances on the same line affect each other when used, some electrical appliances have relatively high requirements for voltage, it is recommended that more electrical appliances on the road do not use the same circuit, some electrical appliances are better to supply power separately so as not to affect each other!!