WHAT TECHNOLOGY ARE PRESENT AVAILABLE FOR DIAGNOSIS INCIPIENT PROBLEM IN HIGH VOLTAGE INSTRUMENT TRANSFORMERS(POTENTIAL AND CURRENT TRANSFORMERS)IN OPERATION, OTHER THAN VISUAL INSPECTION AND THERMOVION.
Hypothetically you could do dissolved gas analysis on oil-insulated units, and some HV CT/PTs have oil cocks but I've never heard of it being done. There is not a lot of oil in them to sample.
I´ve heard there´s a new sensor to get gas from selead High Voltage Instrument Transformer to perform gas dissolved analysis in oil, without the need of taking out oil samples?
Any Help.