EP 2985773 A1 20160217 - On-load tap-changer for dry transformers and dry transformer
Title (en)
On-load tap-changer for dry transformers and dry transformer
Title (de)
Laststufenschalter für Trockentransformator und Trockentransformator damit
Title (fr)
Changeur de prises en charge pour transformateurs secs et lesdits transformateurs
Publication
Application
Priority
EP 14002816 A 20140813
Abstract (en)
The invention is related to an on-load tap-changer (10, 40, 60, 80) for dry transformers, comprising an electric insulating hollow casing (12, 62) extending around a virtual axis (14, 70), wherein several electric contact sections (16, 18, 20, 22) are foreseen along the inner surface of the hollow casing (12, 62), which are electrically joined through the wall of the hollow casing (12, 62) and a selector contact in the inner of the casing which is rotatable around the virtual axis and that's radial outer end is selectively connectable with one of the contact sections by a respective rotation. The inner space (30) of the hollow casing (12, 62) is hermetically sealed and filled with a preferably pressured insulating gas. The invention is also related to a transformer with an on-load tap-changer (10, 40, 60, 80).
IPC 8 full level
H01H 9/00 (2006.01)
CPC (source: EP)
H01H 9/0016 (2013.01); H01H 33/021 (2013.01); H01H 2009/0022 (2013.01); H01H 2050/025 (2013.01)
Citation (search report)
- [Y] EP 2637186 A1 20130911 - ABB TECHNOLOGY LTD [CH]
- [Y] US 5661280 A 19970826 - KUSS ARTHUR P [US], et al
- [A] DE 2835311 A1 19800228 - TRANSFORMATOREN UNION AG
- [A] CN 202307477 U 20120704 - SHAANXI HANZHONG TRANSFORMER CO LTD
- [A] EP 2530693 A1 20121205 - ABB TECHNOLOGY LTD [CH]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 14002816 A 20140813; EP 2015063526 W 20150617