jbk high voltage transformer power transformer

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Scope of application

The transformers are applicable to AC50-60HZ circuits,it could be widely used on control power supply for mechanical equipments such an bridge crane,ship,wind power generation,photovoltaic power generation,testing machines,local lighting,signal lamps and others.


It has charachteristics of excellent performance,reliable operation,low energy consumption,small volume,safe wiring and wide application,and as it can work for a long term under rated load,it is an ideal variable voltage power supply.

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.jpgjbk high voltage transformer power transformer

About us

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

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

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

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Q:What is the difference between the SGB10 transformer and the SC (B) 10 transformer?
1.SGB and SCB transformers are dry-type transformers, the former is non-encapsulated transformer, which is the package transformer, because the SGB is a non-encapsulated transformer, the coil is damaged, can be part of the maintenance; SCB is epoxy encapsulated transformer coil , If the coil burned only after the coil, not part of the maintenance 2. The former heat-resistant grade for the H-class, the latter for the F-class. 3. From the cost point of view, SGB10 than SCB10 expensive 4. From the service life, the basic almost.
Q:The type of transformer and where the different transformers are used
Q:Transformer sales channels
1. Power supply company tender 2. Cabinet manufacturers 3, the installation company 4, direct customers, to the planning bureau to find, in advance to know which new project 5, design institute, know some late 6. Power supply company front desk, people come to install more late
Q:Why is the notebook computer transformer hot?
Laptop Transformer Professional term is called power adapter. Power adapter heat is normal. Power adapter power conversion efficiency can only reach 75-85 or so, in the voltage conversion, a part of the energy loss, which in addition to a small part of the loss in the form of waves, the majority of the way out of the heat The The greater the power of the power adapter, the more energy is lost, the greater the heat of the power supply. The current power adapter on the market are using fire-resistant high-temperature plastic sealed package, the internal heat generated by the plastic shell mainly distributed out. Therefore, the power adapter surface temperature is still quite high, the maximum temperature and even up to about 70 degrees. The following are the same as the " Power adapter heat solution The power adapter heat is unavoidable, but it can speed up its heat to prevent its temperature from rising continuously. 1, the choice of small pressure drop, low loss of switching components, cooling area to be as large as possible, more than 100W switching power supply should generally have a metal perforated shell, or with cooling fan. 2, as far as possible to put the power adapter in a better place to ventilated heat, do not put things like books on the power above. 3, in a higher temperature environment, the use of notebooks, notebook power adapter should be placed in a place not exposed to direct sunlight and ventilation; do not put the power adapter in the notebook near the cooling outlet, or not only the power adapter heat dissipation is not Go out, but also absorb part of the heat.
Q:380V transformer always burn, how is it going
This voltage is normal, mainly due to the secondary load is too large, measured under the secondary current. For large capacity transformer can be. No load is not, it can only show that the quality of the transformer there are serious problems, another regular manufacturers with
Q:50 What is the actual power of the transformer? Is 3 phase 50 or 3 together 50
Three-phase transformer marked the basic capacity of three-phase capacity, that is, the sum of three-phase winding capacity is 50KVA. The actual output capacity of the transformer, not only with the rated capacity of the transformer has a relationship with the nature of the load, and the power factor of the load, and the efficiency of the transformer has a relationship with the level of loss of the transformer. When the load balance, stability, pressure efficiency of 100%, the actual power can be achieved: P = Se × COSφ, visible higher power factor, the closer to 1, the transformer the actual power is higher, closer to the apparent power. In general, the 50KVA transformer, when the power factor of 0.85, the actual output power of about 42.5KW.
Q:Why the provisions of the maximum temperature of the provisions of the transformer 65 °?
Most big oil temperature increased load, the transformer internal fault, there is lack of oil performance security risks. So we do need to limit oil temperature and protection tripping. Small capacity (630KVA less and outdoor) often do not have the oil temperature protection. I have the original table 800KVA overload (secondary current 1500A), top oil temperature to over 90 degrees ......
Q:Is the transformer a power supply?
Here, are relatively speaking. 1, if your equipment behind the transformer, then the output of the transformer is your power. 2, if your equipment in front of the transformer (such as a substation or generator), then the transformer is your load. 3, for example: at home, the adapter (to the phone with a transformer device), it is for your phone, that is, power, you said the socket, it is the load. 4, but if it is necessary to define it as what equipment, then it does not belong to the power supply equipment (power supply with a large generator, a small dry battery). It is able to change the power supply mode of the device.
Q:The main transformer is chosen in principle
Transformer selection, you can refer to the following, but still according to the actual production needs! 1, the number of transformers to determine    (1), the number of main transformer to determine the principle is to ensure the reliability of power supply. When one of the following conditions is met, two or more transformers shall be installed.    ①, there are a lot of first-class load and although the secondary load but need to set from the security (such as fire, etc.).    ②, when the seasonal load changes greatly.    ③, when the load is large.    For large-scale hub substation, according to the specific circumstances of the project can be installed 2 to 4 main transformer.    When installing multiple transformers, it is appropriate to group the transformer according to the characteristics and changes of the load in order to flexibly switch the corresponding transformer group. Transformers should be operated in the sorted manner. Transformer low-voltage outlet of the neutral and neutral ground wire should be laid separately. For the convenience of testing, in the ground circuit, close to the transformer to do a removable connection device.    (2), the general three-level load or capacity is not too much power and lighting should be a load with only one transformer.    (3), when any of the following circumstances, can be dedicated transformer    ①, when the lighting load is large or power and lighting using a common transformer seriously affect the lighting quality and lamp life, can be set for lighting special transformer.    ②, single single-phase load is large, should be set single-phase transformer.    ③, the impact of a larger load, seriously affect the power quality, can be set for shock load special transformer.    ④, when the seasonal load (such as air conditioning equipment, etc.) about the total load of the project 1/3 and above, it is appropriate to configure a dedicated transformer.
Q:What is the normal color of the transformer oil?
these substances can make the oil color becomes darker. If the transformer oil color is dark, should pay attention to, can determine its dielectric loss factor, breakdown voltage, moisture, acid value and color indicators are in line with the new oil standards, conditional units can also determine its oxidation stability indicators Standards compliant

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