Double shielding anti-interference power isolator

The company has strong technical force, advanced production equipment, high level of product technology, complete testing equipment, strict enterprise management, and reliable product quality. The research, design and production of isolation transformers have been carried out for many years. The company has introduced foreign advanced winding equipment and a complete set of vacuum pressure dipping equipment; the winding adopts the method of unfinished winding; the transformer is vacuum dipped to make the insulation of the transformer. Grade F or H. The product performance has reached the international advanced level. Isolation transformers are suitable for circuits with AC 50Hz to 400Hz and voltages below 1000V, and are widely used in lighting, machine tool electrical appliances, mechanical and electronic equipment, medical equipment, rectifiers, etc. Product performance can meet various special requirements of users.

The output and input voltage of the isolation transformer are designed according to the needs, there are single-phase, three-phase or multi-channel input and output, there are delta and star specifications, and the rated power is up to 800KVA. At present, our company's isolation transformers and auto-coupling transformers are widely used in various fields of industrial production. Among them, isolation transformer products are suitable for various occasions that require transformation or safety isolation of mains voltage, such as imported assembly lines whose rated working voltage is inconsistent with my country's. , CNC machining centers, printing machinery and low-voltage high-current systems.

1. With voltage conversion function (such as: △/Yo or Yo/△ connection)

2. It has the function of filtering and anti-interference (for example: it can remove the third harmonic interference function. It can remove the odd harmonic interference.)

3. Can effectively suppress the disturbance harmonics and lightning electromagnetic pulses induced from the power line to interfere with the system

4. It can effectively suppress the disturbance harmonics emitted by the electronic equipment of this system from entering the power distribution network and causing interference to other equipment (devices and systems)

5. Can fundamentally prevent system malfunction, data loss or error caused by ground potential disturbance

6. It can effectively prevent the hardware equipment in the system from being destroyed by counterattack due to the sharp rise of the steel potential as the reference ground when the lightning protection device of the building is connected.

7. The biggest reason why isolation transformers are widely used in construction is that isolation transformers are 1 to 1 transformers. The primary is 220v, and the secondary is also 220v. The alternating current we use is connected to the earth with one wire. There is a potential difference of 220V between the other wire and the ground. Human contact can cause electric shock. The secondary of the isolation transformer is not connected to the ground, and there is no potential difference between any two lines of it and the ground. People will not get an electric shock if they touch any line, so it is relatively safe. Isolation transformers are commonly used in electronic instruments with electronic tubes and high working voltages, such as tube amplifiers, oscilloscopes, etc., and can also be used for power supply maintenance

8. The characteristics of the isolation transformer at the AC power input end:

a: If the third harmonic of the power grid and the interference signal are serious, an isolation transformer can be used to remove the third harmonic and reduce the interference signal.

b: The use of an isolation transformer can generate a new neutral line to avoid abnormal operation of the equipment due to a bad neutral line of the power grid.

c: Current waveform distortion (such as the third harmonic) caused by non-linear loads can be isolated without polluting the grid.

9. The characteristics of the isolation transformer at the output end of the AC power supply:

a: To prevent the current distortion of the nonlinear load from affecting the normal operation of the AC power supply and causing pollution to the power grid, it plays a role in purifying the power grid.

b: Sampling at the input end of the isolation transformer, so that the distortion of the nonlinear load current does not affect the accuracy of the sampling, and obtains a control signal that can reflect the actual situation.

c: If the load is unbalanced, it will not affect the normal operation of the regulated power supply.

10. Principle, structure and advantages of three-phase isolation transformer

The isolation transformer adopts a three-phase double-winding structure, which has the characteristics of anti-lightning and anti-interference. Each winding of the primary and secondary sides is divided into two coils, and the two coils are wound with two layers of mutually insulated metal foils. So there is a capacitance C (so-called capacitive isolation transformer) between the two coils. Then, any combination of the following two wiring methods can be adopted as required:

①: The windings connected to one side of the three-phase four-wire system should be connected in a Z-shaped connection.

②: The winding connected to one side of the three-phase three-wire system should be connected in a hexagonal connection>