| Patents for H01F 29 - Variable transformers or inductances not covered by group (3,889) |
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| 02/20/2013 | CN202749241U Tap selector for on-load tap-changer |
| 02/20/2013 | CN202749193U On-load tapping switch oil cavity |
| 02/20/2013 | CN102938307A On-load voltage regulating transformer connected with high voltage D |
| 02/20/2013 | CN102937218A Multifunctional deflating flange for on-load tap switch of transformer |
| 02/20/2013 | CN102360844B Controllable reactor with orthogonal magnetic rings |
| 02/19/2013 | US8378658 Load swtch for removing high frequency ripple, noise and/or spikes while providing power to subsystems |
| 02/14/2013 | DE102011109898A1 Wähler für einen Stufenschalter Voters for a tap changer |
| 02/13/2013 | CN202736687U Isolation on-load capacity-regulating switch |
| 02/13/2013 | CN202736686U Single-fracture resistance transitional on-load capacity-regulating switch |
| 02/13/2013 | CN202736685U Automatic capacity regulation distribution transformer |
| 02/13/2013 | CN202736684U On-load capacity regulating transformer |
| 02/13/2013 | CN202736683U Hand-operated drive device |
| 02/13/2013 | CN202736682U 10kV/6kV star-delta conversion double-voltage transformer |
| 02/13/2013 | CN102934309A Superconducting fault current-limiter with variable shunt impedance |
| 02/13/2013 | CN102930964A Three-phase on-load capacitance-tuning transformer |
| 02/07/2013 | WO2013018108A1 An improved, high-efficiency, energy-saving device for inserting between a power source and a motive and/or lighting power load |
| 02/07/2013 | WO2013018107A1 Electrical energy transformation assembly |
| 02/07/2013 | WO2013018072A2 Emulator device for emulating a variable impedance and a system for controlling and regulating the state of a neutral conductor in a polyphase system comprising such a device |
| 02/07/2013 | WO2011141081A3 On-load tap changer |
| 02/07/2013 | DE102011109272A1 Linearantrieb für Stufenschalter Linear actuator for tap changer |
| 02/07/2013 | CA2843801A1 An improved, high-efficiency, energy-saving device for inserting between a power source and a motive and/or lighting power load |
| 01/31/2013 | WO2011141076A3 On-load tap changer |
| 01/30/2013 | EP2551862A1 Power supply assembly with means for increasing voltage |
| 01/30/2013 | CN202711978U Contact means located in insulating material wall for stage selector of staged transformer |
| 01/30/2013 | CN202711977U Load switcher used for tap switch of adjustable transformer |
| 01/30/2013 | CN202711976U Load switcher used for tap switch of adjustable transformer |
| 01/30/2013 | CN202711975U Contact means for load selector of staged transformer |
| 01/30/2013 | CN202711974U Tap switch made up of load switcher and stage selector and used for staged transformer |
| 01/30/2013 | CN202711965U Contact means for stage selector of staged transformer |
| 01/30/2013 | CN202711937U Novel multivoltage combined transformer |
| 01/30/2013 | CN202711914U Oil exchange device |
| 01/30/2013 | CN102903500A Transformer |
| 01/30/2013 | CN102903494A Novel cross magnetization direct-current magnetism-assisting adjustable electric reactor |
| 01/24/2013 | WO2013010699A1 Method for load transfer and load transfer switch for a stepping switch |
| 01/23/2013 | CN202695188U Pole changing switch used for grade selection device |
| 01/23/2013 | CN202695098U Off-circuit tap-changer |
| 01/23/2013 | CN202695097U 6 KV / 10 KV star delta transformation dual-purpose transformer |
| 01/23/2013 | CN102891023A Maintenance-free energy-saving on-load capacity-regulating switch and operation method thereof |
| 01/22/2013 | DE202010017884U1 Schaltanordnung Switching arrangement |
| 01/17/2013 | DE102011107460A1 Verfahren zur Lastumschaltung und Lastumschalter für einen Stufenschalter Method to transfer the load and load changeover switch for a tap changer |
| 01/16/2013 | EP2545565A2 Electromagnetic system with no mutual inductance and an inductive gain |
| 01/16/2013 | CN202678123U Insulation and fixed structure for on-load capacitance-regulating switch high-voltage static contact |
| 01/16/2013 | CN202678074U On-load capacity-changing tap switch |
| 01/16/2013 | CN202678073U On-load capacitance-adjusting switch with four fractures connected in series |
| 01/16/2013 | CN102881434A Pressure-adjusting rectifying transformer special for aluminum foil formation |
| 01/16/2013 | CN102881430A On-load voltage regulation and capacity regulation transformer |
| 01/16/2013 | CN102881429A Testing transformer |
| 01/16/2013 | CN102881428A Electron-beam transformer |
| 01/16/2013 | CN102881427A Power transformer for computer |
| 01/16/2013 | CN102295288B 24-pair silicon rod polysilicon reduction furnace power supply system |
| 01/15/2013 | CA2729421C Power conversion using controllable transformers |
| 01/09/2013 | CN202662440U Intelligent on-load dry type regulated capacity transformer |
| 01/09/2013 | CN102867631A Capacity regulating transformer |
| 01/09/2013 | CN102867630A Voltage regulator for UPS bypass cabinet |
| 01/03/2013 | WO2013000608A1 A tap changer and a method of operating a tap changer |
| 01/02/2013 | EP2541572A1 Method and apparatus for monitoring of a tap changer |
| 01/02/2013 | CN202650816U Non-excitation disc-shaped voltage adjusting switch |
| 01/02/2013 | CN202650815U Non-excitation disc-shaped neutral point pressure-regulating tapping switch |
| 01/02/2013 | CN202650814U Non-excitation disc-shaped neutral point voltage regulating tap switch |
| 01/02/2013 | CN202646705U Non-excitation disc-shaped tap switch sealing structure |
| 01/02/2013 | CN102856087A Loaded capacitance-adjustable serial multibreak switch by series-parallel connection method |
| 01/02/2013 | CN102856065A Single-phase super-capacity strong-current short-circuit testing transformer |
| 01/02/2013 | CN102856060A Screw type variable-voltage transformer |
| 01/02/2013 | CN102856059A On-load tap-changer |
| 01/02/2013 | CN102856058A On-load tap arcless switching core |
| 01/02/2013 | CN102856057A On-load tap-changer |
| 01/02/2013 | CN102856043A On-load tap-changer conservator |
| 12/27/2012 | WO2012175141A1 A three-phase on-load tap changer |
| 12/27/2012 | DE102010045901B4 Stufenschalter und Vakuumschaltröhre für einen solchen Stufenschalter Stages and vacuum circuit interrupter for such a step switch |
| 12/26/2012 | CN202633006U Columnar voltage regulator |
| 12/26/2012 | CN202633005U Single phase dry-type convertor transformer for pressing polycrystalline silicon |
| 12/26/2012 | CN202633004U 干式变压器 Dry-type transformers |
| 12/26/2012 | CN202633003U 双电压非晶合金变压器 Dual voltage amorphous alloy transformer |
| 12/26/2012 | CN202633002U Transformer for multifunctional all-in-one machine |
| 12/26/2012 | CN101807471B On-load tap-changer and no-arc transferring method of on-load tap-changer |
| 12/20/2012 | WO2012171791A1 A gearbox for a tap changer, a tap changer and a transformer |
| 12/20/2012 | WO2012113641A3 Electronic tap changer |
| 12/20/2012 | DE102011104885A1 Handantrieb Hand drive |
| 12/19/2012 | EP2535911A1 A gearbox for a tap changer, a tap changer and a transformer |
| 12/19/2012 | EP2535783A1 Transformer |
| 12/19/2012 | CN202616004U On-load capacitor-regulating switch |
| 12/19/2012 | CN202616003U Forward and backward regulating winding structure |
| 12/19/2012 | CN202615991U Converter transformer for polycrystalline silicon reduction furnace |
| 12/19/2012 | CN102832024A Layer coil for regulating voltage of 110kV transformer and production method of layer coil |
| 12/19/2012 | CN101521097B Composite vacuum arc-extinguishing on-load voltage regulation switch of power transformer |
| 12/13/2012 | WO2012167331A1 Fault current limiter |
| 12/13/2012 | WO2012167330A1 Compact permanent magnet fault current limiter |
| 12/13/2012 | WO2012167329A1 A fault current limiter |
| 12/13/2012 | CA2876522A1 Fault current limiter |
| 12/12/2012 | CN202601430U Switch of on-load capacity regulating transformer |
| 12/12/2012 | CN202601399U Multi-voltage-level electromagnetic voltage transformer |
| 12/12/2012 | CN202601395U Combined type vacuum switch |
| 12/12/2012 | CN202601394U Double voltage transformer |
| 12/07/2012 | DE202011110140U1 Schaltelement und Laststufenschalter mit einem solchen Schaltelement Switching element and load tap changer with such a switching element |
| 12/05/2012 | CN202586773U Energy-saving type rectification system |
| 12/05/2012 | CN202586763U New type dual-power on-load voltage regulating and rectifier transformer |
| 12/05/2012 | CN202585169U Three-phase load selector used for staged transformer |
| 12/05/2012 | CN202585168U Load selector for staged transformer |
| 12/05/2012 | CN202585167U Load switcher with resistance convertor for tapping switch of staged transformer |
| 12/05/2012 | CN202585150U Switching structure of moving contacts and fixed contacts of tap selector |