On the Time Lag Measurements of Spark in Transformer Oil

Abstract

The author, intending to measure the time lag of spark in transformer oil, has utilized the method which was used by the author to measure the time lag of spark in air.
The author has measured the time lag of spark across sphere gaps, with electrode diameters varying from 10mm. to 40mm., across cone gap and needle gap immersed in trans former oil.
It can be infered from the author's observations that:-
1. When the gap length is small, the time lag of spark in transformer oil is in order of 10^-8 sec. as in wet air.
2. For equal setting of the gap length, the time lag of a needle gap is the greatest of all in transformer oil.
3. The time lag of a needle gap in transformer oil is very much greater than that in wet air.
4. When the gap length is small, the time lag of a sphere gap in transformer oil does not depend upon the diameter of the sphere.