Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Reexamination Certificate
2011-07-12
2011-07-12
Leon, Edwin A. (Department: 2833)
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
Reexamination Certificate
active
07977589
ABSTRACT:
A tap changer and a method for measuring a contact sequence of a tap changer is provided. The tap changer includes a cylinder and a shaft that is rotatably arranged inside the cylinder, the cylinder is provided with fixed contacts, the shaft is provided with a contact circuit facing the cylinder and including mechanical contacts, which mechanical contacts are adapted to selectively mate with the fixed contacts of the cylinder upon rotation of the shaft, the contact circuit also includes at least two measuring points for measuring the function of the contact circuit. The tap changer includes at least one measuring contact device, which is electrically connected to the respective measuring points in the contact circuit, and which the measuring contact device is arranged inside the shaft. This facilitates access to the measuring points of the tap changer.
REFERENCES:
patent: 3176089 (1965-03-01), Bleibtreu et al.
patent: 3735243 (1973-05-01), Downs et al.
patent: 4207445 (1980-06-01), Hammar
patent: 4496805 (1985-01-01), Duenke
patent: 6849813 (2005-02-01), Albrecht
patent: 102004052316 (2005-12-01), None
Extended European Search Report; EP 09 15 8210; Sep. 2, 2009; 5 pages.
Kemppi Johan
Lunn Lena
ABB Technology Ltd.
Leon Edwin A.
St. Onge Steward Johnston & Reens LLC
LandOfFree
Measuring contact sequence in a tap changer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Measuring contact sequence in a tap changer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring contact sequence in a tap changer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2714111