News & Information

Dry-type transformer main accessories include Bushings, Terminals & Connectors, Cooling Fans, Temperature Monitoring Devices, Voltage Regulation Taps, Protective Relays & Circuit Breakers, Noise Reduction Components, Mounting Brackets and Hardware, Nameplate.

1. Bushings: 

These are the insulated devices through which the electrical connections are made to the transformer windings. They ensure safe passage for the conductors while maintaining proper insulation levels.

2. Terminals and Connectors: 

These are used to connect the transformer to the power supply and distribution system. They must be rated for the voltage and current the transformer will handle.

3. Radiators or Cooling Fans: 

While dry-type transformers can rely on natural air convection for cooling, larger units often have radiators or are equipped with forced-air cooling systems using fans. These help dissipate heat generated during operation, ensuring the transformer operates within safe temperature limits.

4. Temperature Monitoring Devices: 

These include thermal sensors (like thermometers or thermistors) and sometimes even temperature indicators or controllers. They monitor the winding and/or ambient temperatures to prevent overheating and to indicate when maintenance or cooling adjustments are necessary.

5. Voltage Regulation Taps: 

Some dry-type transformers have tap changers that allow for small adjustments in the output voltage. This feature helps maintain a stable voltage level under varying load conditions.

6. Protective Relays and Circuit Breakers: 

To protect the transformer and the electrical system from overloads, short circuits, or other faults, protective relays detect abnormal conditions and send signals to circuit breakers or fuses to interrupt the current flow.

7. Noise Reduction Components: 

Dry-type transformers can generate noise due to magnetostriction effects. To mitigate this, some transformers may incorporate noise-reducing barriers, vibration dampeners, or encapsulation materials.

8. Mounting Brackets and Hardware: 

These are used to securely install the transformer onto its designated platform, wall, or other support structure.

9. Breathers and Desiccant Systems: 

Although these are more common in oil-filled transformers, some dry-type transformers may use breathers with desiccants to keep internal air dry, especially in humid environments, to prevent corrosion and improve insulation performance.

10. Nameplate: 

A crucial accessory that provides essential information about the transformer, including its rating, model number, wiring diagram, and safety instructions.

Each of these accessories plays a vital role in ensuring the safe, efficient, and reliable operation of a dry-type transformer.