Features and Use Condition of EI Transformers

What is an EI Transformers?

EI transformers is a kind of electronic device that the mains alternating voltage is changed into DC through the semiconductor switching device, and the electronic components and the high frequency transformer winding constitute a high frequency AC voltage output, it is also the so-called AC-DC inverter circuit in the electronic theory. In simple terms, it is mainly composed of the high-frequency transformer cores and two or more coils, which not mutually change location, from one or two or more electrical circuits via the AC power by means of electrically magnetic induction, and turn into the AC voltage and current. While at the output terminal of the high frequency mains transformers, it supplies the different voltage levels of the high frequency AC or DC for the one or two or more electricity circuits.



Characteristics of EI Transformer

The input of EI transformer is AC12V, the output is AC220V, and its power can be up to 50W-300W. It is a transformer circuit primarily developed on the basis of high-frequency electronic ballast circuit. It has the features of stable performance, small size, and big power, thus overcoming the disadvantages of big body, bulky and high price of traditional silicon steel sheet transformer. EI transformers is the non-regulator switching power supply, it actually is an inverter. First, turn the AC into DC and then the electronic components is turned into a high-frequency oscillator to make the direct current into high frequency alternating current and through the switching transformer output the voltage required, and then the second rectifier provide for the use of appliances. Switching power supply has the advantages of small size, light weight, and low price, and now it is widely used in a variety of appliances.

Use Conditions of EI Transformer

Use Conditions of electronic transformer includes two aspects: Reliability and electromagnetic compatibility. In the past, people only pay attention to reliability, and now environmental protection awareness is improved, we must pay attention to electromagnetic compatibility. Reliability refers to that under the specific use conditions, the electronic transformer can work properly until the life. The general use condition of the electronic transformer is ambient temperature. Determine the electronic transformer temperature affect the strength parameter is the Curie point of the soft magnetic material. Curie point of soft magnetic materials is high, seldom affected by temperature; Curie point of soft magnetic materials is low, sensitive to temperature changes, and easy to be affected by temperature.

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Methods to Maintain and Preserve Transformer

Brief introduction of transformer

Transformer is one of the most normal electric appliances in distribution network. Transformer which consists of iron core and coil is used to exchange alternating voltage, current and impedance. Whether the mains transformers operate normally affect the safety of distribution network, so it is important to maintain it carefully.

Details to maintain transformer

Daily inspection, maintenance and regular test are extremely vital, and this procedure consists of many steps. Step1, according to its appearance we can check whether the external of transformer imports oil or the components smoke or discharge. Faults must be eliminated and oil should be added at once, and the problems that components become less crowded or loose contact should be solved. Step2, EI transformers in normal operation will produce a little noise, while its sound will change if there is something wrong. We should find out the reasons according to specific situation. Step3, check the greasy dirt and dust in sleeve, and clean them in time to prevent circuits from shorting caused by, moisture and lightening. So there will be staffs to test them every two months. Step 4, observe the color of oil and test the temperature regularly, especially in the bad weather. And temperature of top layer should not above 45 degree. Step5, examine the insulation resistance and the fastness of every lead. And we should pay more attention to the temperature of joint. Step6, measure more about electrical load in the rush hour, and adjust transformer with unbalanced three-phase current, in order to prevent the electric line from burning out. Step7, change and examine the fuss in regular time, in addition, aluminum wire is forbidden taking place of fuse. Fuse should match with transformer.

Prevent the damage from external

In the first place, select an appropriate place for installation and it should be next to the load centre, which should be controlled within 0.5km. At the same time, it should not be installed in the area of low-lying. Secondly, do not install low pressure metering box on distribution transformer, and the long time operation will damage the glass of metering box. Thirdly, tap switch is no allowed to be adjusted personally, in case that tap switch cannot be operated appropriately. Fourthly, add insulating cover to prevent natural disaster and damage from external. And we should also add insulating cover in the area with narrow road and forest with animals. Last but not the least, examine the line regularly and clear line gate to avoid some faults. Examine all the details to make sure the normal operation of transformer. Only in this way can you operate it in excellent condition.

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Power Isolation Transformer Application

EI Transformers are Helpful

In order to transfer electrical power from a certain circuit to another circuit, EI transformers are often used through inductively tiring conductors, which consists of two or more ferromagnetic coils known as windings. A sporadic magnetic field is produced in the core if the electrical alterations are made in the main winding. Then the fluctuation is reproduced which covers fields on both sides of secondary winding. Therefore, the intermittent electrical energy is produced in the secondary coils. You may find out EI transformers of various forms to help transfer electrical power. Among them, the mains isolation transformer serves us many applications and purposes.

Advantages of EI Transformers

An isolation transformer is usually applied to convey electrical energy coming from a resource of alternating current (AC) power to other device, during which the powered gadget is being isolated from the power resource for safety concerns. It may also be utilized to thwart capacitance that improves the primary and secondary winding linkage leading to an increased frequency sound. Generally, a transformer could increase power voltage level from one particular stage to another through induction of electrical power from one winding to another. With the benefits of isolation, the circuits of input and output are secluded from each other and can hardly ever be in contact. Isolation transformers provide galvanic isolation that's utilized for protection against electric shock, suppression of electrical noise in several receptive and sensitive devices, and transmission of power from two circuits. The mains isolation transformer gives you numerous functions. The majority of these purposes carried out by isolation transformers are typically used in various industries and business establishments. Listed below are many of the outstanding roles of isolation transformers. It may replace isolation in various circuits, protect people from the risk of electrocution, lower down noise and other kinds of sound. It helps isolation from the radio frequency, and helps to separate the quantity created by a radio frequency in the large devices of the circuit from the transmitter line as well as facilitate direct current (DC) energy isolation. Isolation transformers carry out the separation of direct current parts from the signal to control every amplifier on the line.

Notice for EI Transformers

For electronic testing and safety concern, the power transformer of "one-to-one" ratio is often applied as the mains isolation transformer. If not so, there exists the risk of touch a live part of circuit. Therefore, mains isolation transformer is the perfect choice for most electrical appliances.

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