Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1984-01-31
1987-05-05
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
361 58, G01R 3112
Patent
active
046635858
ABSTRACT:
Apparatus for testing the dielectric strength of insulating and/or cooling media, particularly insulating oils for electrical apparatus and equipment such as transformers, converters, switches or the like wherein a vessel is provided within which the material to be tested may be contained with electrodes providing a spark gap arranged therein being connected to the high voltage side of a testing generator having a transformer and a voltage control device, the internal resistance of the testing generator being made voltage-dependent and increasing with increasing voltage.
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patent: 3286130 (1966-11-01), Clinton
patent: 3529210 (1970-09-01), Ito et al.
patent: 4117397 (1978-09-01), Fukao et al.
patent: 4140965 (1979-02-01), Neal
Baur Josef
Kruger Michael
Baur Pruf-und Messtechnik K.G.
Eisenzopf Reinhard J.
Harvey Jack B.
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