How much is an electric high voltage transformer? How many times is the electrical transformer trans

How much is an electric high voltage transformer? The power high-voltage transformer is divided according to that, if the voltage is high, then ** must be expensive, about 12,000 yuan.

It's about 130 yuan to 150 yuan, this situation is relatively normal, can achieve a very good effect.

How much is the high-voltage transformer, I don't think this is too expensive, under normal circumstances, it is only a few thousand dollars, two or three thousand, at most.

How much does an electric high voltage transformer cost because there are 50 to 100 of these kinds of things depending on what brand you choose.

The main functions of electronic transformers are:1The current and voltage information of the primary side of the power system can be transmitted to the secondary and the measuring instrument and metering device can be used to measure the current, voltage and electric energy of the primary system.

2. When the power system fails, the transformer can correctly reflect the current and voltage waveforms under the fault state, and cooperate with relay protection and automatic devices to protect and automatically control various faults of the power grid.

It depends on the specific size data, the general S11 is 7-80,000.

In the case of this voltage transformer, you can see how many watts you want to need, and then this is based on different watts and then decide it.

This ** up and down amplitude is relatively large, depending on what kind of machine you need, and the model brand and the like.

This one is afraid to look at, and some people will automatically recognize it happily.

The quality of high-voltage transformers is different according to the quality of the brand.

You can check the price of electric high-voltage transformers online.

The current ratio of the transformer is generally marked according to the primary (core) 1 turn, according to the current ratio equal to the number of turns, the current ratio is equal to: 150 5 1 is equal to 30 times, the current ratio is equal to 150 5 2 is equal to 15 times, and the current ratio is 150 5 2 is equal to 15 times, and 150 5 current transformer.

1 turn through the heart, 30 times. 2 turns through the heart, 15 times. 3 turns of the heart, 10 times 5 turns of the heart, 6 times. When there is no voltage transformer.

The ratio is calculated as "1". That is: when using a 400 5 current transformer, the multiple of the meter is 80 (times).

When using a 600 5 current transformer, the multiple of the meter is 120 (times). 1. The current transformer is a special transformer, and its "conversion ratio" is related to the number of turns of the primary and secondary cycles. Because the output of the secondary side of the current transformer is 5A, changing the number of turns on the primary side changes the conversion ratio of the current transformer.

2. For the nameplate on the transformer.

It is the standard 50 5 current", and the primary side should be worn around 3 times during installation, so that the conversion ratio of 50 5 can be achieved; 2 times around is 75 5; 1 lap at a time (i.e., grommet) is the specification of 150 5. [About "magnification"]: The specification of the current transformer is "150:

The measurement ratios of 5, 75:5 and 50:5 are:

30x, 15x, 10x.

The function of the transformer is to be used as an energy meter.

Expanding the measuring range also has the effect of making high-voltage and high-current into low-voltage and low-current for high-voltage measurement. The magnification is the transformation ratio of the transformer, for example, the transformation ratio of the transformer is 200 5, and the magnification is 40 times. Because the current measured by the watt-hour meter is 40 times smaller than the actual current, when calculating the actual electricity consumption, the electricity meter should be read and multiplied by 40 times.

The calculation formula in practical application is: actual magnification = the magnification of 1 turn of the heart divided by the number of turns of the heart The multiple of the meter = the current transformer ratio multiplied by the voltage transformer ratio.

This is a current transformer, and the ratio of the transformer is 300 to 5, which is 60 times, that is, if the meter shows 1 kWh, it is equivalent to 60 kWh.

The number of turns of the current transformer is 1 turn, and the conversion multiple is the transformation ratio: 300 5 = 60 times.

300 5, the secondary of the transformer is 5a

There are many specifications of electrical transformers, and this is 300 5! aqui te amo。

Categories: Education, Science, >> Learning Aid.

Problem description: As above! Analysis:

The working principle of the voltage transformer is the same as that of the general transformer, but there are differences in the structural type, materials used, capacity, error range, etc.

1. Voltage transformer:

A voltage transformer is a voltage converter. It converts the high voltage to the low voltage so that the change in the high voltage value is reflected with the low voltage value. Therefore, voltage transformers can be used to measure voltages directly with ordinary electrical instruments.

1. Voltage transformer, also known as instrument transformer, is a voltage conversion device;

2. The capacity of the voltage transformer is very small, usually only tens to hundreds of volt ampere;

3. The voltage on the primary side of the voltage transformer is the voltage of the electric transformer, which is not affected by the secondary load, and the load is constant in most cases;

4. The secondary side load is mainly instrumentation and relay coils, which have a large impedance and very little current through them. If the secondary load is increased indefinitely, the secondary voltage will decrease, resulting in an increase in measurement errors.

5. The voltage transformer is used to indirectly measure the voltage, which can accurately reflect the value of the high-voltage side and ensure the measurement accuracy;

6. No matter how high the primary voltage of the voltage transformer is, the rated voltage of the secondary stage is generally 100V, which makes the manufacturing of measuring instruments and relay voltage coils standardized. Moreover, it ensures the safety of instrument measurement and relay protection work, and also solves the difficulties of insulation and manufacturing process of high-voltage measurement;

7. Voltage transformers are often used in circuits such as measurement and relay protection of transformer and distribution instruments. And collapse this.

The high-voltage transformer is a transformer suitable for converting large voltage into small voltage or large current into small current for easy measurement, protection and use in 1 thousand volt to 220 thousand volt power system.

Classification of high voltage transformers:

1. According to the function, the high-voltage transformer is divided into voltage transformer and current transformer;

2. According to the filling material, it is divided into oil-type transformers, and the internal filling of mega bi is insulating oil and the internal filling is epoxy resin.

3. According to the closed level, it is divided into semi-enclosed transformer and fully enclosed guessing transformer.

The role of the transformer is as follows:

1. Change the high voltage and high current of the primary circuit into the standard position of the secondary circuit;

2. The secondary circuit is not limited by the primary circuit. At the same time, when the secondary equipment is maintained, replaced and adjusted, there is no need to interrupt the operation of the primary system, and only the secondary wiring can be changed appropriately.

3. The secondary equipment and staff are isolated from the high voltage part, and the secondary side of the transformer is grounded, so as to ensure the safety of equipment and personnel.

Hello, I am happy to serve you: the qualification of the transformer is 500 1500 yuan, the transformer belongs to, transformer, rectifier and inductor manufacturing industry, industry **3921. Transformer is also known as instrument transformer, which is a general term for current transformer and voltage transformer.

It can turn high voltage into low voltage and high current into small current, which is used to measure or protect the Xianling orange system. Its function is mainly to convert high voltage or high current into standard low voltage (100V) or standard low current (5A or 1A, both refer to rated values) in proportion, so as to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. At the same time, the transformer can also be used to separate the high-voltage system to destroy the group to ensure the safety of people and equipment.

The actual electricity cost generated by the meter with the transformer = the unit price of the electricity bill, the electricity meter reads the electricity quantity, and the transformer multiplier.

1. The formula of the transformer meter is calculated in detail

1. The formula for calculating the degree of the current transformer meter: the actual primary current = the secondary current x the transformer ratio of the transformer 5 turns.

2. Watt-hour meter reading = number of words x voltage conversion ratio x current transformation ratio 5 turns.

3. For example, the ratio of the current transformer is 1500 5 (there is a nameplate on the transformer), the main line is around 5 times, and the transformer becomes 300 5, at this time, if the meter goes 5 degrees, the actual electricity should be 300 degrees. If the car Zhaoguo meter goes 1 degree, the actual electricity is 60 degrees.

In summary:Degree = (meter reading - last reading) * transformer multiplier For example, the current transformer rate of 100 5 is 20 300 5, and the current transformer rate of 5 is 60. For example, the transformer is 1 turn 200 5, which is 40 times, the meter goes one degree, and the actual electricity bill is 40 degrees.

Functions and characteristics of two-phase four-wire electronic meters

1. Measure three-phase active or reactive energy, and long-term work does not need to be adjusted;

2. Three-phase power supply, one line (any one of the three lines of the three-phase three-wire electric energy meter) or two lines (any two of the four lines of the three-phase four-wire electric energy meter) is powered off, and the measurement accuracy is not affected;

3. Wide operating temperature range;

4. It has the function of closing the lease or the voltage indication function of phase breaking.

5. Infrared or RS485 communication (can be added according to user requirements).

6. The word wheel counter shows the power level;

Hello, the electricity meter with the transformer is generally an industrial Jianwang electricity meter, and the calculation method of the electricity fee is: the number of meter readings this month - the number of meter readings last month, and the multiplication of the electricity bill can be changed to the unit price.

Note: Meters that require the use of current transformers are generally used in high-voltage circuits, and when used, Beishi needs to accurately measure the current intensity, so it is necessary to use a meter with relatively high accuracy.

Multiply the number of electrical energy meters by the transformer ratio.

The transformation ratio of the current transformer type 30 5 A you mentioned is 6, and the number of meters is 330 degrees (Zipai, then the actual electricity consumption is 330 6 = 1980 degrees.

In the process of 10kV power distribution design, the selection of 10kV current transformer ratio is very important, if the choice is improper, it is likely to cause the relay protection function can not be realized, the dynamic stability verification can not pass the problem and other problems, should cause the designer to pay enough attention. 10kV current transformer can be divided into two kinds according to the use of use, one is for relay protection, the other is for measurement; They are respectively located in the incoming line, metering, outgoing line, liaison and other cabinets of the power distribution station. In the design practice, the author finds that in the design of distribution and substation, the selection of the transformation ratio of the current transformer is not a few.

For example, the author has found that in a 630kva station with a transformer (10kV side rated primary current of the power supply circuit, the current transformer ratio in the distribution cabinet is only 50 5 (using GL type overcurrent relay, DC operation), which will cause a series of problems such as the current relay can not be set. Boer Power Holdings provides one-stop design, manufacturing, sales and value-added services for high-end integrated power distribution systems and solutions.

The company has nearly 30 years of professional experience, and its intelligent power distribution covers complete solutions such as medium and low voltage distribution distribution cabinets, ring main units, box transformers, and capacitor compensation cabinets below 40kV. Scope of use: Widely used in power plants, commercial buildings, shopping places, main power supply stations, distribution stations, substations, industry, light industry, residential and other industries.

For the selection of the conversion ratio of the 10kV current transformer for relay protection, at least the following conditions should be selected: first, the proportion of the current on the primary side to the rated current on the primary side of the current transformer; the second is according to the requirements of relay protection; Third, the calculated primary current multiple MJS of the current transformer is less than the saturation multiple MB1 of the current transformer; Fourth, it is thermally stable; Fifth, the press is stable. As for the selection of 10kV current transformers for measurement, there is no such thing as this because it is used for measurement under normal operating conditions.

2. Article 3 requirements; The following takes the common distribution transformer as an example to illustrate the influence of the above conditions on the selection of 10kV current transformer, and find out the main factors affecting the selection of current transformer ratio.

1s1 1s2 is one set of windings, and 1s3 1s4 is another set of windings. 1S1 1S2 is used for voltage measurement or protection, and 1S3 1S4 generally provides 220V power supply. 1s2 and 1s4 are grounded separately.

There are generally two groups of high-voltage current transformers, one for calculation and one for protection. The ratio of change was the same for both groups.

An open circuit is not allowed on the secondary side of the current transformer. If you don't connect another current coil, be sure to short-circuit it. An open circuit on the secondary side of a current transformer is dangerous.

You this is a multi-ratio current transformer.

When using, only connect two terminals, and the others can not be shorted, otherwise 1S1 1S2 will have no output.

Only winding terminals that are completely unused need need to be shorted.

6kV is connected to two current transformers to obtain the mid-phase current.

According to my opinion, you don't need to short-circuit and wait for the master to explain ......

You might as well leave another question, if you connect the two joints of 1s1 and 1s3, then how to deal with 1s2 and 1s4 ......

So according to the speculation of the question I left above, the landlord's question can be shorted without shorting, I don't know if my explanation is reasonable ......