EP 2662878 A1 20131113 - Vacuum switch assemblies
Title (en)
Vacuum switch assemblies
Title (de)
Vakuumschalteranordnungen
Title (fr)
Ensembles de commutation à vide
Publication
Application
Priority
EP 12167067 A 20120508
Abstract (en)
The present invention relates to a vacuum switch assembly (1) for interrupting and isolating fault current. The vacuum switch assembly includes first and second dc lines (2a, 2b) that, in use, are electrically connected to the dc output terminals of a primary dc power source (40) and a dc network (18). Each dc line (2a, 2b) includes at least one vacuum switch (4a, 4b) having contacts that are opened and closed under the control of a vacuum switch controller (10). A passive dc power supply unit (30) is electrically connected to the first and second dc lines (2a, 2b) and includes a secondary dc power source (32) that provides a substantially ripple-free sensing voltage. The vacuum switch controller (10) is adapted to open the vacuum switch contacts when a fault condition (e.g. a fault current or other fault) or an operator request has been identified and when the current flowing between the vacuum switch contacts is below a chopping current associated with the vacuum switches (4a, 4b).
IPC 8 full level
H01H 33/59 (2006.01); H01H 33/00 (2006.01); H01H 33/666 (2006.01)
CPC (source: EP)
H01H 33/002 (2013.01); H01H 33/596 (2013.01); H01H 33/666 (2013.01)
Citation (search report)
- [XYI] EP 1939909 A2 20080702 - HITACHI LTD [JP]
- [Y] WO 2011050832 A1 20110505 - ABB TECHNOLOGY AG [CH], et al
- [A] DE 102007004527 A1 20080731 - SIEMENS AG [DE]
- [A] EP 0563904 A1 19931006 - HITACHI LTD [JP]
- [A] DE 3910010 A1 19891019 - HITACHI LTD [JP]
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 12167067 A 20120508; EP 2013059239 W 20130503