EP 0066533 B1 19861203 - ISOLATING SWITCH FOR HIGH-VOLTAGE INSTALLATIONS
Title (en)
ISOLATING SWITCH FOR HIGH-VOLTAGE INSTALLATIONS
Publication
Application
Priority
DE 3122442 A 19810602
Abstract (en)
[origin: US4445014A] A disconnect switch for high-voltage installations is disclosed. The switch includes a pair of hollow contacts, one of which is movable, disposed in a grounded metallic housing filled with compressed gas. A spring-loaded contact-breaking pin is provided in one of the hollow contacts. The pin is provided at its free end with a recess which is engaged in the "on" position of the switch by a ratchet device pivotally disposed in the other contact. During movement of the movable contact toward the "off" position of the switch, the contact-breaking pin remains in contact with the ratchet device. The mechanically controlled ratchet device releases the contact-breaking pin at a given position of the movable contact. The contact-breaking pin is then returned by its spring into its hollow contact with a velocity greater than that of the movable contact. Any arc which may be generated between the ratchet device and the contact-breaking pin is thereby quickly quenched even though the disconnect switch is driven at a slow speed.
IPC 1-7
IPC 8 full level
H01H 31/00 (2006.01); H01H 31/32 (2006.01); H01H 33/12 (2006.01); H01H 33/64 (2006.01)
CPC (source: EP US)
H01H 31/32 (2013.01 - EP US); H01H 33/12 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR LI NL SE
DOCDB simple family (publication)
EP 0066533 A2 19821208; EP 0066533 A3 19840418; EP 0066533 B1 19861203; DE 3122442 A1 19821223; DE 3274595 D1 19870115; JP H0113182 B2 19890303; JP S57210527 A 19821224; SU 1122239 A3 19841030; US 4445014 A 19840424
DOCDB simple family (application)
EP 82730051 A 19820504; DE 3122442 A 19810602; DE 3274595 T 19820504; JP 9467182 A 19820602; SU 3447960 A 19820601; US 38313682 A 19820528