The Functions of The HV Bushings To Power Transformer

Generally, HV bushing is the insulating equipment for transformer. It leads the high voltage and high current out of the transformer while ensuring the safety of itself, the transformer, and people around them.

Its core functions can be broken down into the following key points:

1. Insulation

 This is the fundamental task of the bushing. It addresses two critical insulation issues:

l Ground Insulation

l Internal Insulation

Our vision is to provide good quality bushings with competitive price with our customer.

We will do FAT test before the delivery to ensure the good insulation property of bushings. We will reproduce if the bushings do not pass the test.

2. Fixing and Sealing

Mechanical Fixing: The bushing is a sturdy structure that provides a stable and reliable mechanical support for the high-voltage lead, preventing accidents caused by shaking or detachment.

Sealing and Isolation:

Prevention of leakage of insulating oil (or SF6 gas) from the tank.

Prevention of external moisture and impurities, maintaining the purity and dryness of the internal insulating medium.

3. Current Transmission

The central conductor (or cable) inside the bushing is part of the circuit, responsible for guiding the high-voltage current from inside the transformer windings to the external grid without loss and continuously, or vice versa.

Although HV Bushing is a component of the transformer, it has high requirement on the technical specifications and the stability of its performance. It is of vital importance to the transformer, its failure is a leading cause of transformer outages. So it is important to choose a reliable condenser bushing supplier of your transformer, NANJING RAINBOW ELECTRICis one of your choice.

For more information, please feel free to contact us.