Will high voltage affect electrical appliances?

Satisfactory answer tight to long not handsome level 32011-04-28 The electrical appliances with bad withstand voltage must be easy to break, even if the withstand voltage is good, it can not withstand more toss. If the voltage is often unstable, it is best to buy a voltage regulator. At present, the withstand voltage range of many electrical appliances is generally 110V-250V.

In this range, the working time is not long, and it generally does not burn out. But don't be careless. Follow-up:

It's an electrical worker's mistake! It's more than 300 volts! ：

Then you can go to the power supply to claim, the withstand voltage range is larger, the voltage is better, and the electrical appliances with better withstand voltage may not be burned out if the working time is not long. But high voltages are fatal to electrical appliances. Therefore, it is generally best to unplug the electrical appliances at home when engaging in line renovation or line maintenance.

It's a little safer that way. More than 250V general household appliances are difficult to spare, more than 300V has not burned out the quality is really good Follow-up: The use must be broken!

If it's not open, it's not broken! :Find the electrician's unit to claim compensation Follow-up:

It's definitely a loss! But the quality! o( o Alas!

It's really hard to say about the quality, but now it's much better than before, and when the legal system was not perfect, the people's concept of the legal system was not very strong, and they couldn't think of making a claim. Testimonials:

Thank you!

Electrical appliances with low withstand voltage must be easy to break, and even if the withstand voltage is good, it can't withstand much tossing. If the voltage is often unstable, it is best to buy a voltage regulator. At present, the withstand voltage range of many electrical appliances is generally 110V-250V.

In this range, the working time is not long, and it generally does not burn out. But don't be careless.

According to your description, there are several reasons for the occurrence of high voltage:

1. It may be that there is no neutral line (zero line) on the user's entry line;

2. It may be that the neutral grounding wire at the output end of the transformer is broken (or the grounding is poor), and the three-phase unbalanced power supply.

3. It may be that the voltage is high during the low peak period of electricity consumption or when the occupancy rate of the community is low.

If you are a customer of Guangdong Power Grid and the voltage is high, it is recommended that you call the 24-hour power supply service**, and the power supply company will arrange a customer service manager to verify and follow up for you.

We hope you find ours helpful.

The higher the voltage, the greater the current, so the more heat is generated in the same amount of time according to the square rt of Q=i. Therefore, the voltage is too large and the electrical appliances are burned out.

1. If the voltage is much higher than the rated voltage, the life of the electrical appliance will be greatly reduced. For the power supply circuit or unit of the power frequency transformer, the high power leakage and high voltage will mostly burn out the power amplifier circuit, because most of the power amplifier circuits are not modified by voltage stabilization, and these circuits will increase synchronously with the change of power supply voltage;

2. Therefore, it is common to burn power amplifier blocks. For the circuit of the regulated part of the power supply, there is generally no effect, but the probability of the regulator itself being burned will be greatly increased;

3. The voltage is too high, and it often occurs in the three-phase four-wire electric nuclear search and slip road, some people use a single-stage air opening to control the zero line, and the three-phase shunt lighting, as a result, the zero line switch trips, and the line is broken. It becomes a three-phase closed circuit, and the voltage is unstable.

1. Accelerate the insulation aging of electrical equipment and reduce the service life.

For example, when the voltage of ordinary bulbs is often higher by 10%, the life of the bulb is only 30% of the life when the voltage is often maintained at the rated value, and the cathode life of various tubes of electronic equipment is reduced by half for every 5% increase in the cathode voltage.

2. Make land-based reactive power compensation equipment such as shunt capacitors unable to be put into operation, reducing economic benefits (the long-term material pressure of capacitors shall not exceed 10%).

3. Increase the no-load loss of transformers and other electrical equipment and increase the line loss.

4. Failure of insulation measures, such as easy to generate arcs, etc., and excessive current, easy to overheat the circuit and burn out.

5. It will directly burn the electrical appliances, resulting in damage to the electrical appliances and even causing disasters.

Too high a voltage will burn out all types of household appliances, and too low a voltage will basically burn out electrical household appliances, such as refrigerators, washing machines, and air conditioners. It will not burn out resistive appliances, such as rice cookers and water boilers, but just cook, and the boiling speed is slower.

Unstable voltage is harmful to electrical appliances, electrical appliances should ensure that they operate under certain power conditions, and when the voltage is low, the current will be too large, which will cause electrical appliances to burn out.

Generally, the voltage change is within 50V, and it is fine. The Chinese standard is 220V, and you see that the nameplate of electrical appliances is generally 210V-250V change value, unless it is a precision instrument. But if the change is too big, the voltage is low, it's okay, the refrigerator has low power, the compressor works for a long time, and the TV computer screen is dark, but the voltage is too high, and it is easy to burn out the electronic components.

Yes, but electrical appliances have a range to bear, so it is okay if it is not lower or higher than the range, in fact, the city voltage used by everyone is also unstable, so electrical appliances need such a setting. Hehe, this situation in your home should hurt other electrical appliances very much, which electrical appliances to use when turning off other electrical appliances.

It seems that your start-up is quite power-intensive, which is harmful to electrical appliances, and of course it is not good to do this often! Do you know why we used to use voltage regulators in every house? That is, our power supply voltage is unstable, sometimes high and sometimes low, which is easy to break the electrical appliances.

It will definitely hurt in the long run. Instantaneous excessive current can burn computer hardware.

There will definitely be a little.

Unstable voltage is harmful to electrical appliances. Electrical appliances should be guaranteed to operate under certain power conditions, and when the voltage is low, the current will be too large, which will cause the electrical appliances to burn out.

As for the voltage fluctuations caused by each start, it is the reason why the power of the machine in your home is too high. You don't say how much power your home has in your home, whether it's a single-phase power supply or a three-phase power supply. National electrical engineering requires that electrical appliances below 10 kilowatts are allowed to start at full voltage, and the above must be started with a step-down, and another reason is that the wire diameter of your inlet line is not a little thinner.

Therefore, finding the right cause can solve the problem well.

Yes. Some of the more expensive and squeamish electrical equipment are not good for our normal electricity environment, and they must be specially equipped with a stabilized power supply. For example, induction cookers, televisions, etc., do not use voltage regulators, but if they are too unstable, they will definitely be easily damaged.

You can complain to the power supply bureau about this problem.

Integrated circuits are divided into TTL and CMOS according to the nature of transistors. In general, the operating voltage of CMOS type integrated circuit elements is 3 18 volts, and the operating voltage of TTL type integrated circuit elements is less than 5 volts. When the circuit works under the condition of exceeding the maximum rated value, it is easy to cause the circuit to overheat, damage, and the electric wheel cover can not work normally.

This is what we usually call an integrated circuit burned out.

In our daily life, we sometimes encounter the situation that the electrical appliance does not work, and when we send it to the maintenance point for testing, we find that it is due to the burnout of the integrated circuit module in the electrical appliance. What exactly is an integrated circuit module?

In modern life, the operation interface and internal control system of household appliances have gradually become electronic and intelligent, and integrated circuits are everywhere. For example, the old-fashioned rice cooker only has a mechanical switch, and pressing it is cooking. Today's rice cookers are much smarter, with various function buttons on the operation panel, as well as the function of making appointments for scheduled cooking, so you can make an appointment to cook before leaving the house in the morning, and when you go home in the evening, the steaming rice is ready.

These functions are implemented through the control circuitry inside, and the integrated circuit module is a key component of the circuit.

What happens if a high voltage is applied to an integrated circuit? Integrated circuits are divided into TTL and CMOS according to the nature of transistors. In general, the operating voltage of CMOS type integrated circuit elements is 3 18 volts, and the operating voltage of TTL type integrated circuit elements is less than 5 volts.

Generally speaking, it is not allowed to work under conditions that exceed the limits of integrated circuits during use. When the circuit works under the condition of exceeding the maximum rated value, it is easy to cause the circuit to overheat, damage, and the circuit cannot work properly. This is what we usually call an integrated circuit burned out.

In the case of the Pentium processor chip, for example, a voltage of more than 5 volts can easily damage it.

Although integrated circuits are capable of operating under extreme conditions, voltage regulation measures should be taken for power supply devices at this time. This is because when the power supply is turned on or off, the amplitude of the pulses on the power supply is likely to exceed the limit value, breaking down the insulation between the transistor electrodes in the circuit. The consequences of breakdown are not always manifested in circuit failure or damage, but they can shorten the life of the circuit or leave hidden dangers inside the chip, making the performance of the circuit gradually deteriorate.

Different types of electronic devices, voltage resistance is also different, people in the process of use, according to the needs and conditions of use to choose the right integrated circuit, while strictly following the instructions to control the voltage and current, you can ensure the normal work of the integrated circuit.