The change in voltage rise current after overstating

According to Ohm's theorem, if the resistance is constant, the voltage will increase, and the current will also increase.

A voltage regulator is a device that stabilizes the output voltage. The voltage regulator is composed of voltage and constant voltage, control circuit, and servo motor. When the input voltage or load changes, the control circuit sampling, compares, amplifies, and then drives the servo motor to rotate, so that the position of the carbon brush of the voltage regulator changes, and the coil turns ratio is automatically adjusted, so as to keep the output voltage stable.

Switching regulators use output stages that repeatedly switch between "on" and "off" states to generate an output voltage along with energy storage components (capacitors and inductors). It is adjusted by adjusting the switching timing according to the feedback sample of the output voltage. In a fixed-frequency regulator, the switching timing is adjusted by adjusting the pulse width of the switching voltage, which is known as PWM control.

In a gated oscillator or pulse-mode regulator, the width and frequency of the switching pulses remain constant, however, the "on" or "off" of the output switch is controlled by feedback.

The compressor is an inductive load, so it has power and reactive power, so the compressor current and the regulator current will be inconsistent, and the regulator bears two kinds of work.

1. I really want to use your compressor for? Generally speaking, the compressor is prone to excessive current when it is under heavy load.

2. What is the working voltage when the working current is 9A? Take a multimeter and check it.

3. Is the three-phase electricity balanced? It can also be confirmed with a multimeter.

4. Do you see the 5A and 9A on the voltage regulator, or do you take the ammeter (clamp meter) or the other to measure the data obtained by the compressor directly?

5. When you say that the input line is hot, which section of the line do you mean?

Boost regulator, the output voltage is high, and the corresponding input current is large.

Summary. Dear, hello, yes, when the output circuit of the regulator is too long, the regulator will be susceptible to physical external interference, and its internal voltage may fluctuate, which will eventually affect the service life of the regulator. When the output circuit is too long, there will be a loss of electrical noise, which may cause the unstable operation of the voltage regulator and affect its life, thereby affecting its working stability to the system.

Dear, hello, I am glad to answer this question for you, will the output circuit of the side limb regulator affect the life of the voltage regulator if it is too long, it takes a few minutes to type, please be patient.

Dear, hello, yes, when the output circuit of the regulator is too long, the regulator will be susceptible to the interference of the physical outside world, and its internal voltage may fluctuate, which will eventually affect the service life of the regulator. When the output circuit is too long, there will be a loss of electrical noise, which may cause the unstable operation of the voltage regulator and affect its life, thus affecting its working stability of the system.

How to adjust the output voltage of the regulator if the output voltage of the regulator is too high or too low, some are not 220V, some are 235V, and some are only 210V, so what should I do if the output voltage of the regulator is too high or too low, can I debug it myself? The answer is yes, there is a fine-tuning device on the circuit board of the regulator. You can try to fine-tune it yourself.

The fine-tuning range of this device is about 10V, so don't adjust it too much to avoid damaging the electrical products. Note: customers who do not understand please do not debug privately, because the regulator needs to open the shell when fine-tuning, and it is easy to have an electric shock accident if you are not careful, and it is recommended that 2 people operate when the output voltage of the voltage regulator is fine-tuned, one person is responsible for fine-tuning, one person is responsible for observation, and when there is an electric shock, disconnect the circuit power supply in time.

Voltage regulators. What is the reason for the high output, and how to deal with it? If the input voltage and current exceed the regulator's specifications, and the output voltage or current is too high, the regulator is burned out.

A voltage regulator is a device that stabilizes the output voltage. The voltage regulator has constant voltage regulation, control circuitry, and servo motor.

and so on. When the input voltage or load changes, the control circuit sampling, compares, amplifies, and then drives the servo motor to rotate to make the voltage regulator carbon brush.

The position is changed to maintain a stable output voltage by automatically adjusting the coil turn ratio.

Technical parameters. a.The regulator has an input voltage adaptation range. IEC standards.

The input voltage varies within 20 of the rated value. Out of range, that is, automatic sound and light alarm, and can not make the output voltage stable within the required range.

b.When the load is the rated value, the input voltage is adjusted up from the rated value to the upper and lower limit values according to the source voltage range, and the maximum change in the output voltage is measured ( ) The smaller the value, the better It is an important indicator to measure the performance of the AC voltage regulator.

c.Load regulation: It is the effect of a change in load that causes a change in output. Changing the load current measures the amount of change in the output voltage ( ) The smaller this value is, the better, and is also an important indicator of the performance of the AC regulator.

d.The output voltage relative harmonic content (also known as the output voltage distortion), usually expressed by THD, is the ratio of the total effective value of the harmonic content to the fundamental effective value When the load is the rated value When the input voltage distortion meets the reference condition (generally it should be less than 3) When the input voltage is the lowest value The rated value and the highest value are measured The output voltage distortion is the largest. The lower the value, the better.

e.Efficiency: is the ratio of the output active power P0 to the input active power Pi (percent.

f.Load power factor.

Voltage regulator capacity is expressed in volt-ampere (VA) or kilovolt-ampere (kVA) values, which are inductive and capacitive loads in addition to purely resistive loads.

That is, in addition to the active power, there is also reactive power in the load.

This pointer reflects the ability of a regulated AC power supply to carry both inductive and capacitive loads.

The output of the voltage regulator is too high, this may not be able to be used directly, this should be diesel, it may cause some short circuits, and this hero needs to pay attention.

Q: The reason why the compressed air output is too high is because the machine is running too fast.

In this case, it is recommended that you still find some after-sales service or some professional personnel to see how to solve this situation.

I'm going to Suzhou, what is the reason and how to deal with it? I haven't seen a lot of words, and I may need some professional electrician knowledge to know.

What is the reason why the output voltage of the voltage regulator is too high, or the current is too high.

Since it is regulated, and the output voltage or current is too high in the input voltage and current range, then the regulator is broken.

If the input voltage and current exceed the regulator's specifications, and the output voltage or current is too high, the regulator is burned out.

There are many reasons for this. I don't know what kind of principle your voltage regulator is, but the increase in output voltage is an internal fault except that the input voltage is too high! See if there is a switch to adjust? If you don't have it, you can't use it!

Summary. Because power is the product of current and voltage.

Because power is the product of current and voltage.

Fellow, I really didn't understand, I can be more specific.

If this refers to the situation in a DC circuit, then this may be due to a resistor or load in the circuit heating up, causing the current to drop and the voltage to rise. - In AC circuits, if the load is inductive or capacitive, the dust disturbance may rise and the dust will appear phase difference, in which case the amplitude of the current and voltage can be different, and sometimes even the reverse phase will occur. - Another possible reason is that when an AC motor is controlled with a frequency converter, the speed of the motor changes depending on the frequency, which may cause a change in the current and the voltage may also change accordingly.

Finally, other factors, such as the stability of the power supply or external factors such as temperature and humidity, can also have an impact on current and voltage.

The open circuit is what we call the broken circuit.

The faults of the Zener diode are mainly manifested in open circuits, short circuits and unstable voltage regulation values. Of these three faults, the former one exhibits an increase in the supply voltage; The latter two faults manifest as the supply voltage drops to zero volts or the output is unstable.

The characteristic of a regulated diode is that the voltage at both ends of the diode remains basically unchanged before the reverse energizing breakdown. In this way, when the regulator tube is connected to the circuit, if the voltage at each point in the circuit fluctuates due to the fluctuation of the power supply voltage or other reasons, the voltage at both ends of the load will basically remain the same.

That's what the characteristics of a regulator tube are.

The so-called voltage stabilization of the regulator tube means that when the voltage at both ends exceeds a certain value, the voltage at both ends of the regulator tube changes little when the current flowing through the regulator tube changes within a certain range.

In addition, its nominal voltage regulation value refers to the voltage when the passing current is the rated value, and its voltage regulation characteristics are the best when the current is the rated value.

The second is that its nominal regulation value is allowed to have errors.

Is your regulator three-phase or single-phase? Oil-soaked or dry? What is the rated input voltage range? What is the rated output voltage? Do you mean the air switch by "air on"?

If you don't give these basic parameters, it's hard for you to solve this problem! I hope it will be completed.

Three-phase dry 30kVA voltage regulator, the input voltage range is uncertain, let's say 300V-400V, and the output voltage is 380V.

When the input voltage is between 300V-400V, the output current = 30 * 1000 root number 3 380 =; When the input voltage is at the rated minimum value of 300V, the input current reaches the maximum value = 30 * 1000 root number 3 300 =, which is theoretically calculated in this way.

But in reality your load doesn't have to be all purely resistive, so multiply that by the power factor; So the actual active current of this regulator is the power factor.

You said that after reaching 30A, the line starts to heat up, which is a normal phenomenon, and it can be used normally and stably only when the temperature does not exceed the relevant standard. To tell if it's overloaded, or if you need to give your power factor to finally calculate the actual current.

In addition, the heat dissipation of dry products mainly depends on the natural convection of air, which is not very ideal, so the overload capacity is relatively weak. In the relevant standards, there are only the corresponding overload percentages and the allowable operating time, which are not allowed for long-term overloads.

The rated current of the 30kva regulator is 45A, and the average current of long-term working should not exceed 80%, and it is normal for the regulator to heat up a little when the high current is used, but there is no overload that causes the regulator to have problems, which is the problem of the regulator.

If you have a voltage regulator, 30 kVA will have 45 amps. Generally, switches and wires don't get hot unless your input voltage is too low, the current exceeds the rated current or your regulator capacity is insufficient. I hope it can help you.