What is the purpose of a Qualitrol transformer oil temperature gauge in power transformers?

The purpose of a Qualitrol transformer oil temperature gauge in power transformers is to monitor the temperature of the transformer oil. This is crucial for ensuring the safe and efficient operation of the transformer, as elevated temperatures can indicate overheating, which may lead to insulation degradation or failure. By providing real-time temperature readings, the gauge helps in maintaining optimal operating conditions and preventing potential damage.