EP 2079089 A3 20100901 - Vacuum switchgear and a method of diagnosing vacuum pressure thereof
Title (en)
Vacuum switchgear and a method of diagnosing vacuum pressure thereof
Title (de)
Vakuumschaltgetriebe und Verfahren zur Diagnose des Vakuumdrucks darin
Title (fr)
Appareil de commutation sous vide et procédé de diagnostic de pression sous vide
Publication
Application
Priority
JP 2008001750 A 20080109
Abstract (en)
[origin: EP2079089A2] A vacuum switchgear comprising: a casing; a vacuum switch, enclosed in the casing, comprising a metal vessel covered with a solid insulator, the surface of the insulator being covered with a conductive layer to be earthed, a pair of movable electrode and a fixed electrode to constitute a main circuit, enclosed in the metal vessel; a first condenser connected to the terminal on the solid insulator. A first electric connection means and second connecting means are disposed to the casing, and the first connecting means is connected to a first condenser and the second connecting means is connected to the second condenser. A voltage indicator that indicates a status of vacuum of the metal vessel and a status of power application to a main circuit of the switch section is electrically connected to either the first or second connecting means.
IPC 8 full level
H01H 33/66 (2006.01)
CPC (source: EP)
H01H 33/668 (2013.01)
Citation (search report)
- [Y] EP 1763049 A1 20070314 - HITACHI LTD [JP]
- [Y] JP S61263015 A 19861121 - MEIDENSHA ELECTRIC MFG CO LTD
- [Y] US 4937698 A 19900626 - TOYA HIDEAKI [JP], et al
- [A] DE 4310619 A1 19931014 - FUJI ELECTRIC CO LTD [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2079089 A2 20090715; EP 2079089 A3 20100901; EP 2079089 B1 20150923; CN 101483114 A 20090715; CN 101483114 B 20130116; JP 2009164018 A 20090723; JP 4686555 B2 20110525; SG 154375 A1 20090828; TW 200941531 A 20091001; TW I404099 B 20130801
DOCDB simple family (application)
EP 08021300 A 20081208; CN 200910002218 A 20090108; JP 2008001750 A 20080109; SG 2008090920 A 20081210; TW 97146777 A 20081202