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:
Jul. 04, 1989
Filed:
Nov. 24, 1987
Timothy M Wilkerson, Madison County, IL (US);
Basler Electric Company, Highland, IL (US);
Abstract
A reclosing relay for use in an electrical power system with a circuit breaker for clearing line faults by tripping and reclosing. The breaker has auxiliary contacts defining the state of the circuit breaker as open or closed. The reclosing relay includes a circuit responsive to the auxiliary contacts for producing a first signal representative of the state of the breaker and another circuit for generating a second signal when a loss of power to the reclosing relay is anticipated. The reclosing relay further includes an electronic circuit connected to the first signal producing circuit and the second signal generating circuit for supplying a reclose command for the breaker when the breaker is open by executing one or more operations in a predetermined reclosing sequence, for storing information in response to the second signal identifying which operation in the reclosing sequence is currently being executed, and for using the stored information to continue from the identified operation in the reclosing sequence upon restoration of power. Other features of reclosing relays and methods of operating them are also disclosed.