Power frequency transformer is one of the very important devices in a power system that transforms the voltage from one level to another, providing the proper voltage required for power transmission and application. Industrial frequency transformers have many advantages that make them widely used in modern power systems.
1. Industrial frequency transformers have good power control capability. By adjusting the ratio of the transformer, the proper voltage required for power transmission and application can be realized, and the stable operation of the circuit can be achieved. Therefore, the industrial frequency transformer is one of the essential equipment in the power system.
2. Industrial frequency transformers have good transmission efficiency. Due to its efficient magnetic circuit design and material selection, it is able to achieve efficient power transmission and conversion. This not only saves energy, but also reduces environmental pollution and realizes green power transmission.
3. Industrial frequency transformers have stability and reliability. The stability and reliability of the transformer is one of the key factors of the power system. Industrial frequency transformer using high-quality electrical materials and structural design, can effectively reduce the failure rate of the circuit, to ensure the stability and reliability of power transmission and application, so as to ensure the normal operation of production and life.
4. Industrial frequency transformer is one of the very important equipment in modern power system. Its power control capability, transmission efficiency, stability and reliability make it indispensable in the power system. In the future, with the continuous progress and innovation of science and technology, the performance of industrial frequency transformer will be further improved to make greater contribution to the development and stable operation of the power system.
notes on the use of the product
Transformer is a common power equipment, widely used in various occasions. It has the advantages of simple structure, reliable operation and low cost, and is an indispensable part of electronic equipment.
1. Selection of suitable models and specifications
Small transformers have different models and specifications, and users should choose the right model and specification according to their needs. Improper selection will lead to the equipment can not work properly, damage the equipment, affect the use of the effect.
2. Ensuring safe use
When using a small transformer, you must pay attention to safety. Should follow the relevant regulations, the use of specialized power sockets, to ensure that the wiring is correct, it is strictly prohibited to connect wires and other operations to ensure the safe operation of electrical appliances.
3. Regular maintenance
Small transformers will produce various problems during long-term use, such as insulation aging, loose wiring, coil damage and so on. In order to ensure the normal work of small transformers, we should carry out regular maintenance and repair.
4. Proper storage
Small transformers should be stored away from fire, moisture and other places to avoid damage. If it is not used for a long time, it should be packaged to avoid dust, corrosion and other effects.
transformer transformed voltage
Transformers are made according to electromagnetic induction. It consists of a silicon steel sheet (or silicon steel sheet) stacked iron core and wound on the core of the two groups of coils, the core and coil each other insulated from each other, there is no electrical connection.
The coil that connects the transformer to one side of the power supply is called the primary coil (or primary side), and the coil that connects the transformer to the power-using equipment is called the secondary coil (or secondary side). When the primary coil of a transformer is connected to an AC power source, changing magnetic lines of force are created in the iron core.
As the secondary coil is wound on the same core, the magnetic lines of force cut the secondary coil, the secondary coil must produce induced electromotive force, so that the voltage appears at both ends of the coil. Because the magnetic lines of force are alternating, so the voltage of the secondary coil is also alternating. And the frequency is exactly the same as the power supply frequency.
Transformer primary coil and secondary coil voltage ratio and primary coil and secondary coil turns ratio, can be expressed in the following formula: primary coil voltage / secondary coil voltage = primary coil turns / secondary coil turns. It means that the more turns, the higher the voltage. Therefore, it can be seen, the secondary coil is less than the primary coil, is a step-down transformer. The opposite is a step-up transformer.
toroidal transformer
single phase transformer
low voltage transformer
power transformer
testing of transformers in operation
In order to ensure that the transformer can operate properly, the following tests should be performed frequently:
Temperature test.
Transformer operating condition is not normal, the temperature is very important. Regulations stipulate that the upper oil temperature shall not exceed 85C (i.e., temperature rise of 55C). General transformer are equipped with special temperature measurement device.
Load Determination.
In order to improve the utilization of the transformer and reduce the loss of electrical energy, it is necessary to determine the real power supply capacity that the transformer can bear during its operation. Determination is usually carried out during the peak period of electricity consumption in each season, with a clamp-on ammeter direct measurement. Current value should be 70 ~ 80% of the rated current of the transformer, more than that indicates overload, should be adjusted immediately.
Voltage Measurement.
Regulations require that the voltage variation should be within ±5% of the rated voltage. If this range is exceeded, taps should be used to adjust the voltage to the specified range. Generally, a voltmeter is used to measure the secondary coil terminal voltage and the terminal voltage of the end user respectively.
Insulation resistance determination.
In order to make the transformer is always in normal operation state, must carry on the determination of insulation resistance, in order to prevent insulation aging and accidents. Determination should try to make the transformer stop running, the use of shaking table to determine the insulation resistance of the transformer, the resistance measured is not less than 70% of the previously measured value, the choice of shaking table, the low-voltage coils can be used for 500-volt voltage level.
group profile
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Our adherence to the "integrity, innovation, pragmatism, hard work" spirit of enterprise, adhere to the continuous pursuit of excellence in quality and service, access to the majority of customers' trust and support.
What are the transformer components made of?
Transformer components are mainly composed of iron core and coil, in addition to the oil tank, oil pillow, insulating bushings and tap changer.
What is the use of transformer oil?
(1) insulating effect; (2) heat dissipation effect; (3) arc elimination effect.
What is an autotransformer?
Autotransformer only a set of coils, the secondary coil is tapped from the primary coil, it's power transfer, in addition to electromagnetic induction transfer, there is also the transmission of electricity, this transformer silicon steel sheet and the number of copper wires less than the general transformer, commonly used as a regulator of voltage.
How does a regulator regulate pressure?
The regulator is constructed in the same way as an autotransformer, except that the core is made into a toroidal coil wound on a toroidal core.
The secondary coil taps with a sliding brush contact, so that the contact slides along the surface of the coil in a circular manner, to achieve smooth regulation of the voltage effect.
What is the current relationship between the primary and secondary coils of a transformer?
When the transformer with load operation, the secondary coil current changes, will cause the primary coil current corresponding changes. According to the principle of magnetic potential balance deduced that the primary and secondary coil current and coil turns is inversely proportional to the number of turns on the side of the current is small, the number of turns on the side of the current is large.
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