500kVA transformer reactive power at no load 5

The reactive power of KVA transformer at no load is about 10%.

2. Reactive power, many electrical equipment works according to the principle of electromagnetic induction, such as distribution transformers, motors, etc., which rely on the establishment of alternating magnetic fields to convert and transmit energy. The electrical power required to establish an alternating magnetic field and induced magnetic flux is called reactive power, therefore, the so-called"Reactive"Not really"Useless"'s electrical power, but its power is not converted into mechanical energy and thermal energy; Therefore, in addition to the active power supply, the reactive power supply is also needed in the power supply system, and both are indispensable. The unit of reactive power is var.

The transformer is running at no load and too low load, and the reactive power is about 3 times of the active power, and you belong to the low voltage inverted compensation current into the power grid, which further reduces the power factor, and the low voltage side display is false. In this case, either change the transformer or purchase a special compensation transformer. Low pressure compensation does not work.

If "the active power is 5000, the reactive power is 12000" then.

The power factor is cos = active power [(active power) 2+ (reactive power) 2]=5000 (5000 2+12000 2)=5000 13000=, which is seriously inconsistent with "the power factor on the low voltage side is above".

Or: tg = reactive power degree active power = 12000 5000 =, =, cos =.

The measured data is wrong and cannot be corrected.

Daily reactive power = 12000 30 = 400kvarh, if the 24-hour average: 400 24=, equivalent to the average reactive power.

Daily active power = 5000 30 = 167kwh, if the 24-hour average: 167 24=, equivalent to the average active power.

If you press "transformer measured current 30 50A", then the apparent power is 3. It doesn't match, right?

The transmission of active power is related to the phase of the voltage, and the active power flows from the side with a high phase to the side with a low phase. Reactive powerThe transmission is related to the magnitude of the voltage, and the power of the non-simple noise flows from the side with the large voltage value to the small side.

Active power affects frequency, and reactive power affects voltage. The system is overloaded, the active power is insufficient, and from the perspective of energy balance, the generator can only reduce the speed and turn the mechanical energy.

Converted into active energy, in order to achieve a flat carrying balance;

The reactive power of the system is because all the components need to carry out electromagnetic conversion in operation, and one of the very important reactive power components is the transformer, and the reactive power deficiency affects the electromagnetic conversion of the transformer and thus affects the voltage level of the system.

For three-phase motors.

The sum of the instantaneous powers of the three-phase electricity is constant, so the output torque of the three-phase motor is not pulsating.

The proof is as follows: Hypothesis:

ua=um*sin（ωt+120°）

ia=im*sin（ωt+120°-θ

Then, pa=ua*ia

um*im*sin（ωt+120°）*sin（ωt+120°-θ

1/2*um*im*[cosθ-cos(2ωt+240°-θ

Hello, it is suitable in the following. According to the information you provided, the no-load current of the 10kV 2500kva transformer is less suitable for the problem, and the no-load current is the current consumption of the transformer in the case of no load. The magnitude of the no-load current is related to the design parameters of the transformer, the core material, the winding structure and other factors.

In general, the no-load current of the transformer should be as small as possible to reduce the loss of invalid power. The smaller no-load current can improve the efficiency of the transformer and reduce energy consumption. In addition, the smaller no-load current can also reduce the heat and noise of the transformer, and extend the service life of the transformer.

For the 10kV 2500kva pre-transformer coarse, the suitable no-load current should be as small as possible, but it should also meet the working requirements of the transformer. Generally speaking, the no-load current of a transformer at the 10kV level should be as follows. However, the specific value also needs to be determined according to the specific design and manufacturing requirements of the transformer.

To sum up, the no-load current of the 10kV 2500kVA transformer should be as small as possible, and it should generally be controlled as follows. This can improve the efficiency of the transformer, reduce energy loss, and extend the service life of the transformer.

Hello, we are glad to answer for you that the no-load reactive power compensation of 100kva transformer plexus seepage is about 200-250kvar. This depends on the capacity and mechanical and electrical characteristics of the transformer's seepage ridge, as well as the type of compensation employed in the configuration. Transformer reactive power compensation can be used to achieve effective power quality optimization and reduce capacitor usage and load harmonic losses in system circuits.

For minimizing compensation capacity, state-of-the-art multi-fan rolls provide the best harmonic performance. In addition, if required, the reactive power compensation of the variables can be adjusted by changing the switching control of the rod capacitor in order to optimize the power quality in different reactive power compensation methods within the system.

Hello, dear. The answer to your question, here is the answer as follows: the capacity of 500kva transformer reactive power compensation is best to rub 100 200kvar.

This is determined according to the characteristics of the electrical load that is matched with the transformer. If the characteristics of the electrical load are relatively stable, a reactive power compensation device of 100kvar is sufficient. If it is a dynamic electric load with bending and the fluctuation is relatively large, it is necessary to equip a reactive power compensation device of 200kvar.

Summary. No-load power refers to the power consumed by the resistance furnace when it is running without a workpiece at the rated temperature.

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Hello, glad to answer your question, 3000w transformer no-load power, about 1% of the rated capacity

No-load and no-load (transformer) refers to the working state that the primary winding of the transformer is connected to the power supply and the secondary winding is open. In this matching, the electric spring current in the primary winding is called the no-load current of the transformer.

No-load power refers to the power consumed by the resistance furnace when it is running without a workpiece at the rated temperature.

Dear, I hope the above will help you If you are satisfied with me, please give it a thumbs up

Hello 3000W transformer no-load power, the larger the no-load current of 3000W toroidal transformer, the larger the transformer core. The thickness of the wire diameter is related to the size of the current, and the general current density is 3 5A square millimeters when designing high-frequency transformers. However, there is no necessary relationship between the size of the current and the power, take two projects in our laboratory as an example, a senior brother made a power supply, the power is 3kw, the output voltage is 28V, and the output current is 100A.

Another brother made an electric grinding source, with a power of 5kw, an output voltage of 15kv, and a current of 1 3A.

To determine the no-load reactive power compensation demand of 250kVA transformer, the following factors need to be considered:1The rated voltage and rated current of the transformer2

Voltage and frequency of the power supply network3Types of reactive power compensation devices, such as static compensators or capacitors Generally speaking, for 250kva transformers, you can consider using a collapse hydder static compensator, whose reactive capacity should be around 50-75kvar. However, the specific needs need to be evaluated and calculated according to the site conditions to ensure the best compensation effect.

It is recommended that you consult a power engineer or professional organization for more detailed discussions and solutions. Group selling.