EP 0152583 B1 19880615 - HIGH-TENSION SWITCH
Title (en)
HIGH-TENSION SWITCH
Publication
Application
Priority
CH 88484 A 19840223
Abstract (en)
[origin: US4636599A] Two series-connected main switching contacts (1a, 1b) mounted on a housing (7) are actuated, in conjunction with an auxiliary switching unit (4) for switching a closing or starting resistance (3), by a drive (5) via a switching drive mechanism (6). To obviate the need for a second auxiliary switching unit and to achieve other cost reductions, the closing resistance (3) and the auxiliary switching unit (4) are connected in a parallel circuit and in series between the main switching contacts (1a, 1b). The foregoing components are accommodated in the housing (7). During a switching-on process, the auxiliary switching unit (4) closes after the main switching contacts close (1a, 1b) and the closing resistance (3) is bypassed. During the switching-off process, the auxiliary switching unit opens after the main switching contacts (1a, 1b). A hollow cylinder (21) which carries a moving contact member (9) of the auxiliary switching unit (4), is displaceable to a limited extent with respect to a guide rod (16) of the switching drive mechanism. The hollow cylinder is pushed by a plunger (17) on the guide rod (16) and by a ramming piston (18) into an on position at which the moving contact member (9) locks into a fixed contact member (10). During the switching-off process, the locking mechanism, which can normally withstand a counter force exerted by a tension spring (27), is released by the plunger (17). In another embodiment, the moving contact member of the auxiliary switching unit is constructed as a blade contact which is pivoted on the metal housing.
IPC 1-7
IPC 8 full level
H01H 33/14 (2006.01); H01H 33/16 (2006.01)
CPC (source: EP US)
H01H 33/14 (2013.01 - EP US); H01H 33/166 (2013.01 - EP US); H01H 2033/146 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR LI SE
DOCDB simple family (publication)
EP 0152583 A2 19850828; EP 0152583 A3 19860604; EP 0152583 B1 19880615; DE 3413962 A1 19850829; DE 3472182 D1 19880721; US 4636599 A 19870113
DOCDB simple family (application)
EP 84115216 A 19841212; DE 3413962 A 19840413; DE 3472182 T 19841212; US 69626685 A 19850130