High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Auxiliary shunt
Patent
1999-04-13
2000-08-08
Scott, J. R.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Auxiliary shunt
218 48, 218 57, 218 65, 218 74, 218146, H01H 3312, H01H 33985, H01H 138, H01H 146, H01H 3366
Patent
active
061004898
ABSTRACT:
In the switched-on position, under the influence of contact forces generated by elastic deflection or else by mechanical spreading, or spreading caused by the attraction of parallel currents or repulsion of antiparallel currents, of a switching pin (5) , the switching pins presses against the inner side of a first switching ring (4), which is rigid for the purpose of avoiding mechanical overloading and securing sufficient consumable reserves. By way of example, a support (30) of the switching pin (5) is adjoined by two parallel, elastic extensions (52a, 52b), which are separated by a slot (53) and respectively support a contact member (54a; 54b) by means of a connecting element (55a; 55b) forming half a screw thread, with the result that said contact member is in each case offset by 180.degree. relative to the extension (52a; 52b). In the switched-on position, therefore, the contact members (54a, 54b) are forced apart by the elastic deformation of the extensions (52a, 52b) which is caused by the attraction between the parallel partial currents through said contact members. The switching pin (5) is electrically conductively connected to a second switching ring (6), which is separated from the first switching ring (4) by an arc space.
REFERENCES:
patent: 4668848 (1987-05-01), Kowalyshen et al.
patent: 4684773 (1987-08-01), Niemeyer
patent: 5298704 (1994-03-01), Opfer
patent: 5902978 (1999-05-01), Zehnder et al.
Anderes Robert
Dahler Christian
Kaltenegger Kurt
Schoenemann Thomas
Weltmann Klaus-Dieter
Asea Brown Boveri AG
Scott J. R.
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