The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 1984
Filed:
Jul. 06, 1982
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
In a method of and apparatus for synthetic testing of a multi-break circuit breaker having a metallic tank and a series connection of interrupter units, and a non-grounded and a grounded lead conductors connected to the first and the second ends of the series connection, a short-circuit current is made to flow through the series connection, the circuit breaker is then operated, and upon completion of the interruption of the current, a first transient recovery voltage is supplied to the non-grounded lead conductor and is applied, in effect, across a first one of the interrupter units at the second end or across a train of interrupter units including said first one of the interrupter unit, and, simultaneously, a second transient recovery voltage is supplied to the tank, the first and the second transient recovery voltages having the same polarity and the second transient recovery voltage having substantially the same magnitude as the whole transient recovery voltage to be applied across all the interrupter units of the circuit breaker.