JBK3 transformer high voltage transformer

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.jpgThe transformer are applicable to AC 50~60HZ circuit,rated output voltage no more than 1140V,and rated input voltage no more than 1140V,which could be widely used in control power supply for NC machine tools,elevators,packing machines,LED lighting,carving machines,robots,agricultural machines and others.


This series of transformers are the products upgraded from other control transformers,and manufactured by adopting importde materials and advanced technologies,with characteristics of reliable operation,low energy consumption,small volume,safe wiring and wide application.








It  was established in November of 1994.Until now,It has been developed to be a professional transformer manufacturer after 20 years' development,who integrates R&D,producing and marketing,Meanwhile,Xinping is the earliest transformer manufacturer which gets CQC certificate in China.

The main products  include different kinds of transformers,such as EI transformer,encapsulated transformer,switch power supply transformer,inductance transformer,BK&JBK transformer,toroidal transformer,intelligent servo transformer,three-phase dry type transformer,QZB transformer,special transformer and others.

It is located in Dezhou,Shandong Province which is the domestic key traffic hub in China,(In 2015,Dehou has been regarded as the cooperation development city with Beijing,Tianjin and Hebei).Now there are more than 400 employees in the company,15% employees are special technicians.Xinping covers an area of about 53,000 square meter,and the floor area is more than 30000 square meter.

It does a lot of tests during design,developing and the application of raw material and uses high quality raw material finally.So the transformer has the advantages of low no-load loss,high efficiency and low temperature rise.It has been widely used in househole appliances,intelligent meters,solar meters,automatic equipment,special equipment and others.

In the process of manufacturing and business,Xinping always sticks to the principle of honoring contract,keeping credit,complying with business ethics and seeking the perfect quality.Being the leader of transformers and electronic components industry is the development goal of Xinping.Comparing price under the same quality and comparing quality&service under the same price is the business concept of Xinping.Devoting to your requirment,Xinping will supply you excellent service from products concept to designing ,sample making,confirmation,producing,testing and delicering.Xinping woule like to cooperate with you and build a bright future together.

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Q:What are the specifications of the transformer capacity?
Select the transformer capacity, to the existing load as the basis, appropriate consideration of load development, select the transformer capacity can be determined in accordance with the 5-year power development plan. When 5 years of power development is clear, little change and then the load is not less than 30% of the transformer capacity:     SN = KS ΣPH / (cosφ η)     Where: SN - box change in 5 years required configuration capacity, kVA ΣPH - 5 years old with financial calculations, kW KS - at the same time, generally 0.7 to 0.8 Cosφ - power factor, generally 0.8 ~ 0.85 Η - transformer efficiency, generally 0.8 ~ 0.9     According to the formula generally KS = 0.75, cosφ = 0.8, η = 0.8     SN = 0.75ΣPH / (0.8 × 0.8) = 1.17ΣPH     Example: a district in accordance with 50W / m2 design, then     PH = 50 × 19200 = 960kW     SN = 1.17 x 960 = 1123 kW     So the district selected three 400kVA transformer.
Q:Transformer insulation level L175 AC35 / 5 What does it mean
1, the transformer winding rated withstand voltage with the following letter code: LI - Lightning impulse withstand voltage SI - Operating impulse withstand voltage AC - power frequency withstand voltage
Q:250KVA transformer maximum load how much KW power?
250KVA transformer, the maximum capacity to load how much KW power? This is a bit of a problem, it is difficult to correct answer. Is it possible to ask how much the maximum load of the 250KVA transformer is KW? Or, how much amperes the maximum output current? If you ask, then answer you, the maximum output current is about 250 × 1.445 ≈ 361A or so
Q:This transformer outputs AC or DC
The transformer on your diagram is the power frequency isolation transformer. Input communication, the output is also communication. If you encounter a transformer with DC output, it can only say that it has pre-installed rectifier components rectified and then output, but this situation is almost no, mainly practical and electrical safety.
Q:Will the installation of transformers, power supply bureau is how the charges?
Peak valley price, one day divided into several periods. Each local price is different, the specific local electricity price can call 95598 advice
Q:Transformer short-circuit impedance is big good, or small good? The same capacity, voltage ... solution
Transformer impedance depends on the size of many factors: 1 circuit breaker breaking capacity. Transformer below the power distribution board in a variety of electrical equipment has parameters, you should calculate the short-circuit current according to the impedance of the transformer to verify that these electrical equipment can meet the requirements, the same capacity and variable ratio of the transformer, the impedance of small short-circuit current, Large short-circuit current is small; 2 transformer connected to the large-capacity motor starting voltage. If the transformer load capacity close to the transformer capacity of 1/4 of the motor, should pay attention to check its starting voltage to meet the motor terminal voltage above 70% of the rated voltage. Impedance of the transformer itself is also a large pressure drop, more difficult to meet the requirements; small impedance transformer for the start of the pressure drop better performance; because you do not know how much the transformer capacity, it can not be the absolute conclusion, if the transformer capacity below 1000KVA , The above parameters in 4% and 6% or less, the choice of 4% better
Q:Which transformers belong to special transformers
Transformers are generally used for AC voltage conversion if used for other purposes such as changing the frequency of the power supply, rectifying the power supply of the equipment, the power supply of the welding equipment, the electric power of the furnace or the voltage transformer, the current transformer. These special-purpose transformers are known as special transformers. Because of the working conditions and load conditions of these transformers, they can not be calculated by the general transformer calculation method.
Q:Rules for the operation of cooling devices for oil - cooled transformers
E, strong oil cycle air-cooled and strong oil circulating water-cooled transformers, when the cooling system failure to remove all the cooler, allowing the rated load to run for 20 minutes, such as 20 minutes after the top of the oil temperature has not reached 75 ℃, then allowed to rise to 75 ℃ , But in this state the maximum time to run no more than 1 hour.  F, under normal circumstances, the transformer no-load operation, the cooling device two groups of work, a group of auxiliary, a group of spare, the remaining disabled; transformer low temperature, light load, the four groups of work: a group of auxiliary, a group of spare, the rest Deactivated; transformer high temperature, full load, a group of auxiliary, a group of spare, the rest all into work.
Q:Power transformer parameters
First, the transformer technical parameters The main technical parameters of the power transformer are: rated power, rated voltage and voltage ratio, rated frequency, operating temperature class, temperature rise, voltage adjustment Rate, insulation performance and moisture resistance, the main technical parameters for the general low-frequency transformer parameters are: transformer ratio, frequency characteristics, nonlinear distortion, magnetic shielding and electrostatic shielding, efficiency and so on. A. Voltage ratio: Transformer two sets of coil turns are N1 and N2, N1 for the primary, N2 for the secondary. In the primary coil plus an AC voltage, the secondary coil will produce both ends of the induced electromotive force. When N2> N1, its induction The electromotive force is higher than the primary voltage. This transformer is called a step-up transformer: when N2 N2, V1> V2, the transformer is a step-down transformer.
Q:How do I choose a transformer? The
Select the transformer, you can not choose too large, can not choose too small According to the following method to select the transformer capacity.    There is a very important data is not provided, is the load at the same time coefficient. Transformer with the actual load and equipment rated power ratio is called the transformer load factor. The concept of the load factor for the load is the probability that the load is used at the same time, also called the coefficient or the simultaneous coefficient, which is the probability of simultaneous use of the device. The total load is 300kw, but they are used at the same time there is a probability that the probability is the load factor. It is impossible to always use at the same time. Of course, you can according to the actual situation to calculate their own, power factor selected 0.80.   With this formula, s = p * kX / cosφ Transformer capacity s = device rated power p × transformer load rate kx / power factor cosφ = (300 × kX) × 0.80 This is the transformer capacity.    Do not know what the motor is used under the circumstances, so it can not be calculated, and only calculate the same time after the generation of the formula into the above formula. If the coefficient is 0.9, then the results of about 340 kVA, are used at the same time, that is, 375KVA, consider a certain margin and spare capacity, that can choose 400KVA. In addition to the above considerations, in particular, consider the motor starting current factor, select the transformer more reliable. As far as possible by the big do not rely on small. And the standard capacity of the transformer level 315,400,500,630KVA, 315KVA a little small, 500KVA big and no need. So choose 400kvA it

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