Porcelain clad current transformer

摘要

An expansion chamber 23 for a porcelain clad current transformer is formed by a base plate 231 secured on an insulating tube 22 housing a primary coil 21, and a unitary inverted cup-shaped envelope 232 removably mounted on the upper surface of the base plate. Primary terminals 26electrically connected to the coil within the expansion chamber are installed through the base plate to thereby facilitate the necessary connections before the chamber is assembled and filled with insulating oil.