A method for monitoring unusual signs such as partial heatings and partial electric discharges in an apparatus to be monitored, in which a sealed gas is enclosed into a tank containing the apparatus, and at least one of monitor gases represented by formulas (I) and (II),...http://www.google.fr/patents/US5128269?utm_source=gb-gplus-shareBrevet US5128269 - Method for monitoring unusual signs in gas-charged apparatus
Method for monitoring unusual signs in gas-charged apparatus
