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:
Dec. 26, 1989
Filed:
Oct. 03, 1988
Lars Paulsson, Vaster.ang.s, SE;
Asea Brown Boveri AB, Vaster.ang.s, SE;
Abstract
Series capacitor equipment is connected into an electric power transmission line (L) and has a capacitor bank with a first part (CO) series-connected with a second part (C1-Cn) with variable capacitance. For protection against overvoltages, a first spark gap protective means (GO, T, TE) is connected across the first part, and a second spark gap protective means, connected in series with said first spark gap protective means, is connected across the second part of the bank. The point of connection (A) of the spark gap protective means is connected to the point of connection (B) of the bank parts through a resistor (R). The first spark gap protection means is adapted to be ignited at a predeternined level of the current in the power transmission line, the voltage drop across the resistor (R) then causing said second spark protective means (G) to become ignited.