H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 73/18 (2006.01) H01H 3/22 (2006.01) H01H 9/54 (2006.01) H02H 9/02 (2006.01)
Patent
CA 2325008
The current-limiting switch (S) has an arc-resistant contact arrangement (K1), which is intended to carry the rated current (I N), of a first switching point (S1), and two commutation paths (P1 and P2) connected in parallel with the first switching point (S1). The first commutation path (P1) contains, in series, a contact arrangement (K T) of a second switching point (S T) and an electronic power switching apparatus (T). The second commutation path (P2) contains, in series, a switching apparatus (S A) and a current-limiting element (R B). The contact arrangements (K1 and K T) are designed to be coaxially symmetrical and are arranged in a pressure-resistant housing (G). Both switching points have electrodynamic drives which open and close very quickly. Thanks to the extremely space-saving, coaxial arrangement of the contact arrangements, undesirable stray inductances can be avoided. This allows the current-limiting switch to be switched on and off very quickly.
Frohlich Klaus
Holaus Walter
Kaltenegger Kurt
Steurer Michael
Abb Hochspannungstechnik Ag
Abb Schweiz Ag
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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