WTI & OTI

INTRODUCTION

The longevity and performance of transformers are of paramount importance. To ensure that these vital components operate seamlessly, two acronyms are instrumental: WTI, which stands for Winding Temperature Indicator, and OTI, which stands for Oil Temperature Indicator. These essential instruments serve as the eyes and ears of transformer systems, continuously monitoring winding and oil temperatures.

WTI, or Winding Temperature Indicator, is a critical component of transformer monitoring systems. Its primary function is to provide real-time insights into the temperature of the transformer’s winding coils.

WTI’s role is crucial in preventing overheating and potential damage to transformers. It continuously observes the temperature of the winding coils, which are vulnerable to excessive heat due to factors like overloading or insulation degradation. When abnormal temperature variations are detected, WTI takes immediate action, triggering alarm systems, trip mechanisms.

The insulating oil within a transformer serves as both a coolant and an insulator. To maintain optimal performance, it must operate within a specific temperature range. OTI monitors the temperature of this oil and, like WTI, operates on thermal imaging principles. When it detects deviations from the desired temperature range, OTI activates alarm systems. By doing so, it ensures that the insulating oil remains at an ideal temperature, safeguarding the transformer’s functionality and longevity.