公开(公告)号：BR9602218A

公开(公告)日：1998-04-07

申请号：BR9602218

申请日：1996-05-10

Applicant: ABB RESEARCH LTD

Inventor： NIEMEYER LUTZ

IPC: H01H33/18 ,  H01H33/70 ,  H01H33/72 ,  H01H33/74 ,  H01H33/98 ,  H01H33/04

Abstract: Cylindrical quenching chamber (1) of a power circuit breaker, filled with insulating medium, has a power current track extending along a longitudinal axis (2) in an insulating housing (12), with a fixed contact arrangement (3) in the power current path and with a contact arrangement (5) having a movable contact basket (8) which surrounds an electrically insulating guide (4) when the switch is on. The insulated housing has a step (13) which projects into the region between first (7) and second (10) arc-resistant covers for the contacts. The two covers are positioned concentrically around the area of the contact basket. Pref. the guide part and the housing are of PTFE and at least one of the covers is of graphite.

公开(公告)号：CA2173190A1

公开(公告)日：1996-11-13

申请号：CA2173190

申请日：1996-04-01

Applicant: ABB RESEARCH LTD

Inventor： BRUEHL BODO ,  JUELKE ELIAS ,  KALTENEGGER KURT ,  NIEMEYER LUTZ ,  RITZER LEOPOLD

IPC: H01H33/98 ,  H01H33/70 ,  H01H33/76 ,  H01B3/00 ,  H01H71/00 ,  H01B3/02 ,  H01B3/30 ,  H01B3/56

Abstract: The stock contains an insulating-material matrix and a filler embedded in the matrix and is distinguished by a cellular structure. The predominant portion of the cells is filled with a material having arc-extinguishing properties or contains a material which, on exposure to an arc, forms arc-extinguishing gas. For the purpose of improving the making and breaking capacity, such a stock can advantageously be employed in a gas-blast circuit breaker in which arcextinguishing gas is blown onto the switching arc (11). This involves the stock preferably being positioned at such points guiding the arc-extinguishing gas, at which the stock is exposed to the radiation of the arc (11) and the thermal action of arc gases.

公开(公告)号：AT497633T

公开(公告)日：2011-02-15

申请号：AT07821371

申请日：2007-10-16

Applicant: ABB RESEARCH LTD

Inventor： SEEGER MARTIN ,  NIEMEYER LUTZ ,  IORDANIDIS ARTHOUROS ,  FRANCK CHRISTIAN

IPC: H01H33/74 ,  H01H33/98

公开(公告)号：DE502005006085D1

公开(公告)日：2009-01-08

申请号：DE502005006085

申请日：2005-10-10

Applicant: ABB RESEARCH LTD

Inventor： SEEGER MARTIN ,  NIEMEYER LUTZ

IPC: H01H33/24

公开(公告)号：DE50014444D1

公开(公告)日：2007-08-09

申请号：DE50014444

申请日：2000-04-11

Applicant: ABB RESEARCH LTD

Inventor： HEITZ CHRISTOPH ,  PIEMONTESI MARCO ,  NIEMEYER LUTZ

IPC: H01B17/14 ,  H01B17/42

Abstract: The electrical insulator has an insulator body 3 which is fitted between an electrical conductor 1 and a grounded holder 2 . The surface of the insulator is at least partially formed by a protective body 6 . The material of the protective body has a low dielectric constant in comparison to that of the material of the insulator body 3 . The protective body 6 prevents an electrically conductive particle 12 from coming to rest directly on the surface of the insulator body 3 , in particular in the region of the triple points T, or causing a considerable increase in the field due to immediate proximity to the insulator body 3. The breakdown voltage of a gas-insulated system which contains such insulators provided with a protective body is increased. Gas-insulated systems can thus be made more compactly and more cheaply, and their life can be extended.

公开(公告)号：DE59900953D1

公开(公告)日：2002-04-11

申请号：DE59900953

申请日：1999-07-06

Applicant: ABB RESEARCH LTD

Inventor： NIEMEYER LUTZ

IPC: H01H1/38 ,  H01H9/44

公开(公告)号：DE19833607A1

公开(公告)日：2000-01-27

申请号：DE19833607

申请日：1998-07-25

Applicant: ABB RESEARCH LTD

Inventor： KOSTOVIC JADRAN ,  NIEMEYER LUTZ

IPC: H02B1/24

Abstract: The operating method uses a current rail coupler (S2) between each 2 current rails (I,II) for the electrical switchgear, which is normally held in the closed position for providing an electrical connection between the current rails and which is opened during switching operation of the switchgear, or in response to a fault. The current rail coupler may be opened after opening a current rail switch (S1) ,inserted in one of the current rails between an energy supply block (EB) and an energy transfer block (TB). An Independent claim for an electrical switchgear is also included.