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

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

2. Using an isolation transformer can generate a new neutral line to avoid abnormal operation of equipment due to poor neutral line of the power grid.

3. Current waveform distortion (such as the third harmonic) caused by nonlinear loads can be isolated without polluting the power grid.

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

1. Prevent the current distortion of the nonlinear load from affecting the normal operation of the AC power supply and pollute the power grid, and play a role in purifying the power grid.

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

3. If the load is unbalanced, it will not affect the normal operation of the regulated power supply. Isolation transformer wiring method: The wiring group of the isolation transformer is a representation of the combined wiring form of the primary winding and the secondary winding of the transformer; there are two common connection methods for transformer windings, namely “delta connection” and “star connection”; In the connection group of the transformer, “D” means delta connection, “Yn” means star connection with neutral wire, Y means star shape, n means with neutral wire; “11” means the line on the secondary side of the transformer The voltage Uab lags behind the primary side line voltage UAB330 degrees (or leads 30 degrees)

1. Core material:

The core of the three-phase isolation transformer uses silicon steel sheet to increase the resistivity, which can reduce the eddy current and reduce the loss. The quality of the silicon steel sheet used in the transformer has a lot to do with the quality of the silicon steel sheet. The quality of the silicon steel sheet is usually measured by the magnetic flux density B. The B value of general black iron sheet is 6000-8000, that of low silicon sheet is 9000-11000, and that of high silicon sheet is 12000-16000.

2. Materials commonly used for winding transformers:

Enameled wire, sandbag wire, wire covered wire, commonly used enameled wire. The requirements for the wire are good electrical conductivity, sufficient heat resistance of the insulating paint layer, and certain corrosion resistance. In general, it is best to use high-strength polyester enameled wire of the Q2 type.

3. Insulation material:

In winding transformers, insulating materials are used for the isolation between the layers of the coil frame and the isolation between the windings. The general transformer frame material can be made of phenolic cardboard, and polyester film or paper can be used for isolation between layers. Yellow waxed cloth for isolation.

4. Impregnated material:

After the transformer is wound, the last process is to impregnate the insulating varnish, which can enhance the mechanical strength of the transformer, improve the insulation performance, and prolong the service life. Generally, cresol varnish can be used as the impregnating material

• How do transformers been shipped?

  Transformers always been delivered by ship,train or truck for oversea

• Can your product be customerized?

  Considering differences in voltage, frequency and other speciality of transformer product in different countries and regions,our product can be customerized according to your requirements.

• Do you offer guarantee for the products?

  Yes. We offer at least two years guarantee for all of our transformers.

• Do you accept FAT(Factory Acceptance Test)?

  Yes. It’s available. We are responsible for each set transformer’s testing.

• Do you assign engineer for after-sale service?

  Yes. For our products,we all show after-sale guide installation adn question inquiry