| Patents for H01H 31 - Air-break switches for high tension without arc-extinguishing or arc-preventing means (5,099) |
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| 03/10/2011 | US20110057667 Method and apparatus for detecting deterioration of lightning arrester |
| 03/09/2011 | CN201758099U Switch device with isolated and grounded vacuum circuit breaker |
| 03/09/2011 | CN201758095U Direct-acting type isolating switch |
| 03/09/2011 | CN201758094U Vertical telescopic outdoor high-voltage isolating switch |
| 03/08/2011 | US7902834 Upgradable test set |
| 03/08/2011 | CA2366542C Monitoring leakage currents from high-voltage devices |
| 03/03/2011 | WO2011023205A1 Drive device, in particular for a multi-position switching apparatus |
| 03/02/2011 | EP1551050B1 Single pole fuse holder base |
| 03/02/2011 | CN201754386U High voltage load switch operating mechanism for American style box type transformer |
| 02/24/2011 | WO2011020513A1 Retaining element for switchgear |
| 02/24/2011 | WO2011020509A1 Switchgear |
| 02/24/2011 | WO2011020508A1 Disconnector for switchgear |
| 02/24/2011 | WO2011020507A1 Breaker module for medium-voltage switchgear and medium-voltage switchgear |
| 02/23/2011 | EP2287874A2 Switchgear and method for operating switchgear |
| 02/23/2011 | CN201751970U Electric grounding switch |
| 02/23/2011 | CN101981643A Mounting assembly |
| 02/17/2011 | WO2011018810A1 Two-column electrical disconnector |
| 02/16/2011 | CN201750043U Cross beam in inflatable load switch |
| 02/16/2011 | CN201749815U Switch locking device |
| 02/16/2011 | CN201749814U Isolating and grounding switch with one shaft driving multi-station for looped network cabinet |
| 02/16/2011 | CN201749791U Mounted isolation switch ground remote device |
| 02/16/2011 | CN101976623A Disconnecting switch fuse block with wiring terminal protection sleeves |
| 02/16/2011 | CN101976622A Grounding switch operating device of removable switch cabinet |
| 02/15/2011 | US7888947 Calibrating automatic test equipment |
| 02/10/2011 | WO2011015367A1 Gas-insulated high-voltage switching system |
| 02/09/2011 | CN201741620U High-reliability isolating switch used for winning machine |
| 02/09/2011 | CN201741619U Manual tripping mechanism for high-voltage switch |
| 02/09/2011 | CN201741602U Interlocking device of ground switch operating mechanism of central-positioned high-voltage switch cabinet |
| 02/09/2011 | CN101969006A Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| 02/08/2011 | US7884617 ESD detection circuit and related method thereof |
| 02/03/2011 | US20110025344 Holding member for use in test and method for manufacturing same |
| 02/03/2011 | US20110025298 Determining degraded insulating ability in insulation provided between two objects of an inductively operating element |
| 02/02/2011 | CN201732716U Bidirectional clutching gear case for high-voltage switches |
| 02/02/2011 | CN201732715U Actuating mechanism for side-mounted isolating switch |
| 02/02/2011 | CN101965668A A configurable circuit breaker |
| 02/02/2011 | CN101964269A Conversion-drum three-position isolating mode and isolating switch |
| 02/02/2011 | CN101964268A Isolation switch operation mechanism |
| 01/27/2011 | US20110018552 Coupon board and manufacturing method of printed board |
| 01/26/2011 | CN201725723U Novel valve, isolation and grounding link gear |
| 01/26/2011 | CN201725722U Bidirectional clutch gear case for high-voltage switch |
| 01/26/2011 | CN201725721U Three-station switch manual and electric operation switching device |
| 01/26/2011 | CN201725720U Three-phase disconnecting link sequential inching isolation switch |
| 01/26/2011 | CN101383241B Solid insulation electricity isolation device |
| 01/25/2011 | CA2536481C Bypass recloser assembly |
| 01/20/2011 | US20110012617 Methods and systems for testing digital-to-analog converter/amplifier circuits |
| 01/20/2011 | US20110012616 Systems and methods for assessing standoff capabilities of in-service power line insulators |
| 01/20/2011 | US20110012615 Systems and methods for assessing standoff capabilities of in-sevice power line insulators |
| 01/19/2011 | CN201717173U 220KV vertically-opened disconnecting switch shunt device |
| 01/19/2011 | CN201717172U Alternating-current high-voltage switch opening device |
| 01/19/2011 | CN201717171U Upper-down disconnecting switch, earthing switch on-off operating mechanism and switch cabinet |
| 01/13/2011 | US20110007443 Apparatus, method, and system for monitoring leakage current and detecting fault conditions in electrical systems |
| 01/13/2011 | US20110006783 Card for simulating peripheral component interconnect loads |
| 01/13/2011 | US20110006782 Insulation monitoring of servicing units used in a potroom for the production of aluminum by igneous electrolysis |
| 01/13/2011 | US20110006781 Insulation state detector |
| 01/13/2011 | DE102009032540A1 Erdungsschalter insbesondere für eine Mittelspannungsschaltanlage Earthing switch in particular for medium-voltage switchgear |
| 01/12/2011 | EP2273524A2 Earthing switch, in particular for a medium voltage switching assembly |
| 01/12/2011 | CN201708076U Interlocking device of isolating switch and grounding switch |
| 01/12/2011 | CN201708075U High voltage isolating switch operating mechanism |
| 01/12/2011 | CN201708074U On-off state display of sealed type isolation switch |
| 01/12/2011 | CN101944455A Isolating switch fuse set with locking function while separating brake |
| 01/12/2011 | CN101944454A Isolating switch fuse unit with protection cover |
| 01/12/2011 | CN101944453A Isolating switch fuse set with electrical operating device |
| 01/11/2011 | US7868400 Apparatus for driving a load |
| 01/05/2011 | CN201698977U Novel fuse box |
| 01/05/2011 | CN201698949U GN30-12 indoor high-voltage isolating switch |
| 01/04/2011 | US7863910 Insulation resistance detecting apparatus |
| 12/29/2010 | WO2010149486A1 High-voltage arrangement |
| 12/29/2010 | WO2010149483A1 Viewing window and ground contact connection for a high-voltage arrangement |
| 12/29/2010 | CN201690114U Emergency tripping device for switch cabinet |
| 12/29/2010 | CN201689821U Base device for high-voltage isolating switch |
| 12/29/2010 | CN201689820U Disconnecting switch blade fixed by bolts |
| 12/29/2010 | CN201689819U Grounding switch tripping locating device |
| 12/29/2010 | CN201689818U Busbar type disconnecting grounded combination switch |
| 12/29/2010 | CN101441943B Electric connection device for high voltage isolating switch |
| 12/29/2010 | CA2766334A1 High-voltage arrangement |
| 12/29/2010 | CA2766332A1 Viewing window and ground contact connection for a high-voltage arrangement |
| 12/28/2010 | US7859420 Devices for testing the operability of electronic circuitry |
| 12/22/2010 | CN201681753U Contact blade of switch |
| 12/22/2010 | CN201681752U Driving device especially used for multi-position switch equipment |
| 12/16/2010 | US20100315096 Insulation resistance detecting apparatus |
| 12/16/2010 | US20100315095 Current transformer and electrical monitoring system |
| 12/16/2010 | CA2764996A1 Cable termination systems and isolating apparatus for electrical power transmission conductors and methods using the same |
| 12/15/2010 | CN201674116U High voltage cabinet stroke switch control device |
| 12/15/2010 | CN201673846U Moving and fixed contact device of ground loop of load switch |
| 12/15/2010 | CN201673845U High-current outdoor isolating switch |
| 12/15/2010 | CN201673844U Conductive structure for high-voltage disconnecting switch |
| 12/15/2010 | CN201673843U Bridge-type large-current isolator |
| 12/15/2010 | CN201673842U Mining explosion-proof dual-power high-voltage load switch |
| 12/15/2010 | CN201673841U Outdoor quadrupolar linkage disconnector |
| 12/15/2010 | CN101916685A 1100kV ultra-high voltage isolating switch for opening and closing switching current of high-parameter bus |
| 12/09/2010 | US20100308841 Circuit arrangement for monitoring an electrical insulation |
| 12/08/2010 | EP1889272B1 An electric switch having an annular stationary contact |
| 12/08/2010 | CN201667311U High-voltage alternative-current isolation switch conductive switch rotation electric contact structure |
| 12/08/2010 | CN101911412A Three-positions disconnector for medium voltage panels |
| 12/02/2010 | WO2010136424A1 Catching and locking device inside a switch or circuit breaker |
| 12/01/2010 | EP2255423A1 A configurable circuit breaker |
| 12/01/2010 | EP2255370A1 Mounting assembly |
| 12/01/2010 | CN201663091U Isolating switch protective cover |
| 12/01/2010 | CN201663090U Static knife of inflatable load switch |
| 12/01/2010 | CN201663089U Movable isolation cutter in inflatable load switch |