SZ9-200~2500/11KV Three Phase On-load Pressure Regulating Power Transformer

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SZ9-200~2500/11KV  three phase on-load pressure regulating power transformer is suitable for distribution saatem with 10KV,50HZ for industrial and mine enterprise ,power illumination .it confirms to GB1094<power transformer> standard.

SZ9-200~2500/11KV  three phase on-load pressure regulating power transformer.can ajust automatically volatage underload condition according to electric grid voltage fluctuation to improve power supply quality,its performance parameter reaches international advanced level of 90s similar product,it has strongpoint of advanced workmanship,novel design.nice appearance and less groung demand.

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Q:National Standard for Transformer Life
I can only give you in the transformer industry, we all agree that the argument: 1, before the transformer, the oil inside the transformer and air direct contact. As the transformer in the thermal expansion and contraction, the oil up and down fluctuations, we called the transformer in the breath, an increase of oil and air contact opportunities. The moisture enters the inside of the transformer. So that insulation is reduced. Under normal operation and maintenance, the transformer is guaranteed to have a life span of 20 years. 2, the current transformer, to take a fully sealed structure, oil pillow with sealed pocket, so that the transformer oil is not in direct contact with the air. Under normal operation and maintenance, the transformer life is 30 years
Q:Transformer copper row selection
Selection principle of transformer copper Meet the load requirements; Transformer corresponding to the rated current in accordance with 1.1 times the overload factor to consider; To meet the safety distance, and components aligned; Satisfy the dynamic stability. Transformer copper selection considerations The choice of copper can not just consider the current carrying capacity it also consider the maximum short-circuit current size, that is, consider the choice of a copper after the most short-circuit when the short-circuit current short-circuit the size of the current matching the size of the protection (that is, Relay protection value size).
Q:1000KVA transformer power loss is how much
It depends on its kind of transformer oil-immersed transformer or dry, 1000KVA dry-type transformer no-load loss of about 1.5% to fill the load loss of 3%, oil-immersed transformer no-load loss of about 3% to fill the load loss of 5% The above is just for reference, because each manufacturer has a difference.
Q:Transformer input power how to ask?
The significance of no - load power factor of power transformer The power transformer is likely to run without load, while the low power factor will increase the grid supply voltage. When the power transformer is unloaded, the no-load current is mainly used to establish the transformer core excitation and provide the excitation loss. The excitation current is part of the current current is reactive current, the general design, the power transformer power factor is low. When the power transformer winding side of the application of sinusoidal AC, the magnetic field is also sinusoidal changes in the magnetic field. However, the core of the transformer is a non-linear magnetically permeable material, so the field current that produces the magnetic field must be non-sinusoidal. Generally appear as "steeple". Figure 1 for a single-phase transformer no-load current waveform and its harmonic spectrum. Transformer no-load operation, the output power is zero, no-load power is equal to no-load loss. In the case of loss of fixed, the smaller the no-load current, the higher the no-load power factor. Therefore, the power transformer no-load power factor is higher, the better the no-load current is better. Increasing the no-load power factor is one of the main technical research directions of power transformer manufacturers, and reducing the no-load current is an important technical means to improve the no-load power factor.
Q:Transformer is the transmission of electrical equipment
Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on. Transformer consists of iron core (or core) and coil, the coil has two or more than the winding, which connected to the power supply winding called the primary coil, the rest of the winding called secondary coil. It can transform AC voltage, current and impedance. The simplest core transformer consists of a soft magnetic material made of iron core and set on the core of the two turns ranging from the composition of the coil,
Q:How to calculate non - isolated power transformer parameters
General non-isolated auxiliary windings according to chip drop VCC operating range. T = 1 / f Dmin = Vout / Vin (max) Ton = T * Dmin Id = Io * 0.3 (0.3 for the ripple current coefficient) Inductor voltage V = Vinmin-Vout-0.6 (Schottky voltage drop) Lmin = V * dt / di If there are problems please go to the big bit of the forum electronic transformer plate
Q:Transformer ratio and transformer ratio
Transformer ratio K and transformer voltage on both sides U1 U2 winding turns N1 N2 current I1 Ⅰ2 have a relationship! In the ideal case, the ratio K = U1 / U2 = N1 / N2 = I2 / I1
Q:Transformer three-phase imbalance which harm
There is no obvious harm to the transformer, but will limit the capacity of the transformer can not get 100% play. For example, A-phase current close to the transformer rated current, B, C-phase current only 10% of the rated current, but then the transformer can no longer take any three-phase power equipment, limiting the capacity of the transformer.
Q:Transformer Lightning
Transformer by lightning over-voltage damage, usually the primary coil over-voltage burned one is short-circuit two open. Most of which is caused by the line called the induction mine (lightning) instantaneous damage, the shell (surface) no burn traces. Unless it is just in the transformer over the formation of direct lightning damage effect.       Transformer lightning is the most vulnerable to the transformer insulation problem, in fact, the structure of the transformer, insulation is a particularly important assessment factor. Transformer insulation damage, the other performance will be affected, including: three-phase voltage is not balanced, no load and load test pass. Detection method is usually: first with a shake table measured insulation resistance, in the measurement of the winding resistance, and finally can be hanging core to do no load test. You can gradually know what part of the lightning damage!
Q:What is the transversal and semi-crossing problem of the transformer?
(4) Splitting coefficient: The ratio of split impedance to crossing impedance. The description of the method of the standard method shows that the commutation reactance measurement of the rectifier transformer is similar to that of the transformer short-circuit impedance measurement. The difference is that the measurement of the short-circuit impedance is usually made by connecting the low-voltage side of the transformer and the high-voltage side to the rated current, And the commutation reactance measurement of the rectifier transformer is to short-circuit the high-voltage side and to measure the voltage between the terminals at the low-voltage side with the rated single-phase current. It can be seen that the commutation reactance of the split transformer is a half-crossing impedance.

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