Transformer Tap-changers Use Reed Switches

Within a transformer, a crucial component known as the tap changer serves to adjust the turn ratios, thereby altering the relationship between the primary and secondary windings. Transformer Tap changers play integral roles in protection and control schemes, ensuring optimal performance and safeguarding against potential malfunctions.

One critical function of tap changers involves determining the position of the tap changer assembly, specifically whether it is in an odd or even position. This distinction is essential to prioritize the adjustment of no-load taps before those under load, thereby maintaining operational efficiency and preventing potential disruptions.

To facilitate this functionality, magnets or sets of magnets are strategically mounted on the moving assembly arms. These magnets serve to activate Reed Switches positioned on the transformer. Given that these components are situated within the oil tank of the transformer, specialized Reed Switches capable of withstanding high temperatures are employed. Special construction materials are used to insulate and encapsulate the Reed Switches, ensuring their resilience to the extreme temperatures encountered within the transformer environment.

The selection of appropriate Reed Switches and associated materials is crucial to guaranteeing the reliability and longevity of the tap changer mechanism. By effectively detecting the position of the tap changer assembly, these components contribute to the seamless operation of transformers, enhancing their performance and longevity while ensuring the integrity of power distribution systems.

Application Classification

Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.

Position sensing Type

When an application requires the end position of a movement sensed, or the sensing of a part when it comes into a zone, or when the Continue reading -> Sep 29, 2024

Recommended Products

The Reed Switches and Sensors used in such applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.

High Wattage Reed Switch, HW-5052

HW-5052 High Wattage Reed Switch with Full Length LeadsHW-5052 Reed Switch with Cropped Leads starFeaturesContact Rating Continue reading -> Sep 3, 2024