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The ** of the transformer is about a few hundred yuan per unit, the cheap one has one or two hundred yuan, and the expensive one has several thousand yuan. Different types of transformers** are also different. In terms of categories, the classification of commonly used transformers can be summarized as follows:
1. According to the number of phases: 1) Single-phase transformer: used for single-phase load and three-phase transformer group.
2) Three-phase transformer: used for the rise and fall voltage of the three-phase system. 2. According to the cooling method:
1) Dry-type transformer: relying on air convection for natural cooling or increasing fan cooling, mostly used in high-rise buildings, high-speed toll stations and local lighting, electronic circuits and other small-capacity transformers. 2) Oil-immersed transformer:
Relying on oil as the cooling medium, such as oil immersion self-cooling, oil immersion air cooling, oil immersion water cooling, forced oil circulation, etc. 3. According to the use: 1) Power transformer:
for transmission and distribution systems....
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The main difference between the two transformers is that the power and capacity are different. A 15-kilowatt transformer can have a larger capacity than an 11-kilowatt transformer.
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The input power is different, the output power is different, the transformer size is different, in short, the whole transformer is different, only the working principle is the same. The appearance may be the same.
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Eleven kilowatts and fifteen kilowatts, their volume should be about the same, the difference, one is a little more powerful, the other is a little less powerful.
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The main reason is that the capacity is different, the secondary voltage is the same, the rated current will not be the same, and the quality and size will not be the same.
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The electricity load is 1243kw, which we can assume is the computing capacity.
If the power factor (after compensation) is about 65% of the load factor, choose a 2000kVA transformer; If the load factor is about 85%, choose a 1600kVA transformer.
When is the load rate of the transformer selected as 65%?Under what circumstances do you choose 85%?It's a question to consider!
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Hello, the power of the two is different. You can choose to buy according to your actual needs.
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So there are longing for data transformers, and there are a lot of different scenes left.
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I've been kicked by you for 11 days, and I'm going to have to go to the 15th floor, what's the difference? Different help us, specific analysis such as the two of them.
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Summary. Dear, hello, kilowatt is a unit of capacity, and 10kv transformer means transformer with a voltage level of 10kv. The capacity of 10kV transformers commonly used in urban and rural areas is generally 30-1250kVA.
Dear, hello, kilowatt is a unit of capacity, and the meaning of 10kv variable voltage dispatcher has long been a transformer with a voltage level of 10kv. The capacity of 10kV transformers commonly used in urban and rural areas is generally 30-1250kVA.
Fellow, I really didn't understand, I can be more specific.
10kV kV is the voltage, KV is the kV, 10 kV is 10,000 different volt voltage 10kV is not directly related to the power kilowatt, how many kilowatts can be used in a 10kV circuit depends on the wire diameter of the line and the capacity of the upstream transformer. 10kva transformer can band 10kva is 10kw, how much power can be band = 10kva * conversion efficiency. Based on the average power factor, a 10kva transformer can provide (10kva kW of active power) to a load.
If the amorphous alloy transformer can completely replace the new S9 series distribution transformer, such as the annual demand of 10kV distribution transformer calculated at 50 million kVA, then it can save more than 10 billion kWh of electricity a year. At the same time, it can also bring good environmental protection benefits of less power plants and less greenhouse gas emissions to the atmosphere, which will greatly reduce the direct pollution to the environment and make it a new generation of green environmental protection products worthy of the name. When the transformer is running under load, when the secondary current increases, the transformer must maintain the main magnetic flux in the iron core unchanged, and the primary current must also increase accordingly to achieve a balanced secondary current.
If I help you, please give a thumbs up, thank you, and have a great day. Slag Yu Jane.
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Summary. Hello dear, I'll answer for you. The power of a 10kV high-voltage transformer cannot be determined, mainly because the capacity of the transformer is not known.
If the transformer capacity is determined, then the high-voltage transformer capacity can be determined. 10kV transformers are available in 100kVA, 200kVA, 300kVA, 800kVA, 1600kVA, and other capacities. The transformer capacity is generally not said how many kilowatts it is, but is expressed in kva.
va=w, kva=kw, in fact, the meaning is basically the same, but the saying is different. Therefore, 10kV is just a voltage, not a power.
Hello dear, I'll answer for you. The power of a 10kV high-voltage transformer cannot be determined, mainly because the capacity of the transformer is not known. If the transformer and wax capacity are determined, then the high-voltage transformer can be determined by calling the high-slip capacity.
10kV transformers are available in 100kVA, 200kVA, 300kVA, 800kVA, 1600kVA, and other capacities. The transformer capacity is generally not said how many kilowatts it is, but is expressed in kva. va=w, kva=kw, in fact, the meaning is basically the same, but the saying is different.
Therefore, 10kV is just a voltage, and reading vertical does not indicate power.
I'm sorry I don't understand, but can you elaborate on that?
Hello dear, I'm here to answer your questions. 10kv is equal to 10 kV, is the voltage 10kw is equal to 10 kilowatts, is the power of one is the voltage, the other is the power, 10kV (transformer and box transformer) distribution transformer, distribution transformer, referred to as "distribution transformer". It refers to a kind of wild static electrical appliance in the power distribution system that converts the alternating voltage and current according to the law of electromagnetic induction and transmits alternating current energy.
Distribution transformers usually refer to power transformers that operate in the distribution network with a voltage level of 10-35kV (most are 10kV and below) and a capacity of 6300kVA and below to supply power directly to end users.
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Hello, can 1000 kW 1250kva transformer load is 1000 kW. The load of the transformer is generally a multiple of the transformer capacity, so the load of a transformer of 1250kVA is 1000 kW. As a load, the transformer is small in small load conditions (smooth operation and good economy.
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The capacity of the transformer to focus on the dynamic load mainly depends on the power factor of the load it is dragging, and the formula is as follows: p=s*cos where: 1. p is the active power, which is the rated power of the load; 2. S is the apparent power, which is the total power that the transformer (electric land source) can provide, which includes both active power and reactive power; 3. COS is the power factor.
It can be seen that if cos = 1, then, p = 125 * 1 = 125kw, that is, the maximum load power that a 125kva transformer can drag is 125kw; However, in reality, it is difficult for COS to reach 1, and the economic operation efficiency of the transformer is: , generally according to the value, that is, p=125*, that is to say, it is better to drag the 125kva transformer.
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Summary. If the motor starting problem is not considered, 1015kva can be equipped with a motor 800-900kw motor. If it is a single motor, consider starting it at most about 300kw.
If it is more than one motor. It is necessary to consider the maximum power motor starting and the case where multiple low power motors are already running.
If you don't consider the motor starting problem, 1015kva can be charged Qibu to rent 800-900kw motors. If it is a single motor, consider starting it at most about 300kw. If it is multiple motors, it is a malfunction.
It is necessary to consider the high mega situation of the maximum power motor starting and the operation of multiple low power motors.
How much can you reach if you drive an electric heater?
Around 700.
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Hello, dear, a 10 kV transformer can not use two 11 kV motors, first of all, let's talk about the so-called "kVA" in relatively simple language; The nominal capacity of the commonly used transformer is expressed in kilovolt-ampere, which is the apparent power in electrical engineering (the meaning of which refers to the product of the RMS value of voltage and the RMS value of current in circuits with resistance and reactance), which is represented by the symbol s and the unit is volt-ampere (VA), which is better calculated by kilovolt-ampere (KVA) because the unit is too small (1kVA=1000VA). All electrical equipment, including motors, is expressed in active power (watts or kilowatts), and it needs to be pointed out here that in AC circuits, its instantaneous power is not a constant value, because AC is a sine wave, for example, we use 50 Hz AC, it changes 50 times per second, and the average value in one of the cycles is called active power, which is represented by the symbol 卩; This means that in a circuit with an inductance (or capacitor), the inductor (or capacitor) stores the energy of the power supply into magnetic field (or electric field) energy in half a cycle, and returns the stored magnetic field (or electric field) energy to the power supply in the other half of the cycle. They only exchange energy with the power supply, and do not really consume energy.
We call the maximum velocity rate of energy exchange between the inductor (or capacitor) and the power supply reactive power, which is represented by the symbol Q and is expressed in var or kva. In summary, the relationship between them can be expressed as: s =p +q. Whereas, in AC circuits, for inductive loads, it involves a noun of power factor, namely:
In a circuit, the cosine cos of the phase difference between voltage and current is called the power factor in the circuit. That is, cos = p s, and the apparent power is equal to p + q, so the conversion formula is: cos =p s = p p p +q
In the end, it can only be simply said that one kVA transformer can only drive 08 kW of electricity load.
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Summary. Hello, dear, 150,000 kWh, if it is soft start, you need a transformer of 18w kw, if it is hard start, you need a transformer of about 25w kw.
Hello, dear, 150,000 kilowatts of loose gear when the balance is simple, if it is a soft start, you need a 18w kw transformer, if it is a hard start, you need a 25w kw or so block transformer.
150,000 kWh per month is equivalent to about 209 kWh, which is active power. If you convert it to actual power, you need to divide it by the cos( ) value, which depends on the nature of the load you carry, and you need to know it yourself. Answer: The macro assumes that the apparent power obtained by the conversion is 300kva, which does not indicate that the balance and disadvantage requirements are met.
This is because there is also a time imbalance in the actual load distribution (e.g., is it mainly concentrated during the day, in the first half of the night?). ), especially if there are particularly high peaks. In addition, it is necessary to consider the loss of the transformer itself, and set aside the remaining amount of the register.
Brother Chen did not consider the current carrying capacity, according to the voltage drop of 125 meters is not the main problem, the main consideration is the current carrying capacity, the current of 360 amperes must be at least 95 square copper or 120 square aluminum wire.
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