| Patents for H01F 29 - Variable transformers or inductances not covered by group (3,889) |
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| 02/15/2012 | CN202145418U 一种双高压低压有载调压变压器 A dual high-voltage low-load tap |
| 02/15/2012 | CN202145417U 一种用于牵引变压器的环形分接盘结构 Ring for traction transformer tap disc structure |
| 02/15/2012 | CN102356443A On-load tap changer comprising semiconductor switching elements |
| 02/15/2012 | CN102354626A Vertically-arranged integral bipolar converter |
| 02/09/2012 | DE102011008959B3 Stufenschalter mit Vakuumschaltröhren Tap changer with vacuum interrupters |
| 02/08/2012 | CN202142432U 变压器调容开关高压触头 High voltage transformer tune Yung switch contacts |
| 02/08/2012 | CN202142405U 一种三相三立柱电渣重熔炉用变压器 A three-phase three pillars electroslag remelting furnace transformer |
| 02/08/2012 | CN202142404U 一种变压器调容开关 A transformer capacity adjustment switch |
| 02/08/2012 | CN1771570B 感应供电设备 Induction powered equipment |
| 02/08/2012 | CN101740211B 带平衡变第三绕组调压整流变压器 With the balance becomes the third winding voltage regulator rectifier transformer |
| 02/02/2012 | WO2012016202A2 Fast-cycling, conduction-cooled, quasi-isothermal, superconducting fault current limiter |
| 02/02/2012 | WO2012013237A1 Current limiter |
| 02/01/2012 | CN202134380U 一种双电压干式变压器 A dual voltage dry-type transformers |
| 02/01/2012 | CN202134379U 一种双电压可转换的变压器 A dual voltage converter transformer |
| 02/01/2012 | CN202134378U 新型低压配电变压器 New low-voltage distribution transformers |
| 02/01/2012 | CN202134324U 变压器有载调压开关储油柜 Transformer OLTC conservator |
| 02/01/2012 | CN101667487B 光控有载切换器 Light-controlled load switch |
| 02/01/2012 | CN101241798B 制程可调漏感型变压器 Process adjustable transformer leakage inductance |
| 01/26/2012 | DE102011008688B3 Kraftspeicher Power storage |
| 01/25/2012 | CN1812678B System and method for driving a multi-lamp |
| 01/25/2012 | CN101807469B Lever system for driving vacuum bubble |
| 01/19/2012 | DE102010049813B3 Umsteller Diverter |
| 01/18/2012 | DE202010017501U1 Lastumschalter für einen Stufenschalter Diverter switch for a tap changer |
| 01/18/2012 | CN202121541U Automatic voltage regulation electricity strealing preventive dragging system of oil pumping unit |
| 01/18/2012 | CN202120743U Single-phase multi-tap insulating transformer |
| 01/18/2012 | CN101789310B Method for manufacturing static contact and insulation strip composite piece of non-excited magnetic strip-type tap switch |
| 01/11/2012 | CN202110930U Distribution transformer capable of automatically regulating capacity and voltage |
| 01/11/2012 | CN202110929U Dual-voltage S11 oil-immersed wind power box-type substation body structure |
| 01/11/2012 | CN102315029A Method and system for a pre-selector in a tap changer |
| 01/11/2012 | CN101807473B Parallel horn contact system |
| 01/11/2012 | CN101807470B Vacuum on-load tap changer double-track cam disk |
| 01/04/2012 | CN202102867U Contact assembly of rotating-core voltage regulator |
| 01/04/2012 | CN102306936A Magnetron reactor capable of adjusting starting point |
| 01/04/2012 | CN102306642A On-chip integrated inductor with adjustable inductance value |
| 01/04/2012 | CN102306560A Connecting structure of fixed contact and tapping line of no-excitation tapping switch |
| 01/04/2012 | CN102306544A Transformer with conveniently adjusted output |
| 01/03/2012 | DE202010017377U1 Laststufenschalter OLTC |
| 12/29/2011 | WO2011160743A1 Tap changer |
| 12/28/2011 | CN202093925U 一种电阻可调中性点接地干式空心电抗器 A resistor adjustable neutral grounding dry hollow reactor |
| 12/28/2011 | CN202093924U 可调式补偿电抗器 Adjustable compensation reactor |
| 12/28/2011 | CN102295288A 一种24对棒多晶硅还原炉供电系统 One kind of 24 pairs of rods polysilicon reduction furnace power supply system |
| 12/28/2011 | CN101958188B 无励磁分接开关的手动操纵装置 No circuit tap manually operated device |
| 12/28/2011 | CN101958187B 22万伏级高压侧角接的全绝缘有载调压变压器 220,000-volt level of the high-pressure side of the fillet fully insulated load tap |
| 12/28/2011 | CN101752070B M型有载分接开关所使用的真空泡切换芯子 M-type vacuum foam core switching load tap used |
| 12/22/2011 | WO2011157318A1 Tap changer |
| 12/22/2011 | WO2011157317A1 Tap changer |
| 12/22/2011 | WO2011157316A1 On-load tap changer |
| 12/22/2011 | DE102010024612A1 Stufenschalter Tap changer |
| 12/22/2011 | DE102010024327A1 Stufenschalter Tap changer |
| 12/22/2011 | DE102010024326A1 Stufenschalter Tap changer |
| 12/22/2011 | DE102010024255A1 Laststufenschalter OLTC |
| 12/21/2011 | CN202084408U 自动调容调压配电变压器 Auto-regulating distribution transformer capacity |
| 12/21/2011 | CN202084407U 一种有载调容配电变压器 A kind of load transfer capacity of distribution transformers |
| 12/21/2011 | CN202084406U 自动调容变压器 Auto transformer capacity |
| 12/21/2011 | CN102290220A 一种换流变用有载真空开关调压方法 One kind of converter transformers with vacuum switching regulator load method |
| 12/21/2011 | CN101807468B 可容置真空泡的上夹板 Vacuum splint can be accommodated on the bubble |
| 12/21/2011 | CN101699592B 一种主载流触头系统 One major carrier contact system |
| 12/19/2011 | DE202010012811U1 Stufenschalter Tap changer |
| 12/14/2011 | CN202076107U 一种单相有载调压变压器的调压结构 A single-phase load tap regulator structure |
| 12/14/2011 | CN202076106U 自动调压变压器 Automatic voltage transformer |
| 12/14/2011 | CN202076082U Resin-insulated double-voltage three-dimensional wound core dry type transformer |
| 12/14/2011 | CN102280243A 电气化铁路v/v接线牵引变压器绕组结构 Electrified Railway v / v Traction transformer winding structure |
| 12/14/2011 | CN101364472B 直流感应器 DC inductor |
| 12/13/2011 | US8077005 Aligned multilayer wound coil |
| 12/08/2011 | WO2011152753A1 Electrical reactor with magnetization |
| 12/08/2011 | WO2011110951A3 Electromagnetic system with no mutual inductance and an inductive gain |
| 12/08/2011 | WO2011091256A3 Superconducting fault current-limiter with variable impedance shunt coil |
| 12/08/2011 | CA2801318A1 Magnetic-bias-controlled reactor |
| 12/07/2011 | CN202068191U Countryside supercharger |
| 12/07/2011 | CN202067655U 一种自耦有载调压电力变压器 One kind of auto-load tap power transformer |
| 12/07/2011 | CN202067654U 三相变压器及其分接调压装置 Three-phase transformer and tap-regulating device |
| 12/07/2011 | CN202067643U 单相牵引变压器 Single-phase traction transformer |
| 12/07/2011 | CN101540227B 中心抽头式变压器 Center-tapped transformer |
| 11/30/2011 | EP2319059B1 Tap switch with semiconductor switching elements |
| 11/30/2011 | EP1676284B1 Core for a controllable inductive device |
| 11/30/2011 | CN202059366U 电压转换装置 Voltage converting means |
| 11/30/2011 | CN202058568U 电压转换装置及其组合 Voltage converting means, and combinations thereof |
| 11/24/2011 | US20110285364 Phase-fired control arrangement and method |
| 11/23/2011 | EP2388471A1 Sequence control circuit for switching devices with a device for distributing firing impulses |
| 11/23/2011 | DE202011051315U1 Einphasige Elektroinduktionseinrichtung Single-phase induction electric device |
| 11/23/2011 | DE202010011524U1 Stufenschalter Tap changer |
| 11/23/2011 | DE202010011522U1 Stufenschalter Tap changer |
| 11/23/2011 | DE202010011521U1 Laststufenschalter OLTC |
| 11/23/2011 | CN102254713A On-load capacity-regulating switch with single fracture |
| 11/23/2011 | CN102254712A Transformer capacity-regulation switch high-voltage contact |
| 11/21/2011 | DE202011051056U1 Induktives Bauteil The inductive component |
| 11/17/2011 | WO2011141081A2 On-load tap changer |
| 11/17/2011 | WO2011141080A1 Switching arrangement |
| 11/17/2011 | WO2011141076A2 On-load tap changer |
| 11/17/2011 | DE102010020180A1 Lastumschalter für einen Stufenschalter Diverter switch for a tap changer |
| 11/17/2011 | DE102010020139A1 Transformatordurchführung Transformer Bushing |
| 11/17/2011 | DE102010020138A1 Umsteller für einen Transformator Toggle for a transformer |
| 11/17/2011 | DE102010020137A1 Schaltanordnung Switching arrangement |
| 11/17/2011 | DE102010020130A1 Lastumschalter für einen Stufenschalter Diverter switch for a tap changer |
| 11/17/2011 | DE102010020040A1 Schaltanordnung Switching arrangement |
| 11/17/2011 | CA2798959A1 On-load tap changer |
| 11/17/2011 | CA2798867A1 On-load tap changer |
| 11/16/2011 | EP2387122A1 A fault current limiter |
| 11/16/2011 | CN202042908U Self-excited four-tap magnetically-controlled reactor |
| 11/16/2011 | CN202042348U Switching subassembly of combined type on-load tapping switch |