| Patents for H01F 29 - Variable transformers or inductances not covered by group (3,889) |
|---|
| 03/30/2011 | EP2302648A1 Self power-acquiring quickly responsive controllable electric reactor |
| 03/30/2011 | CN201780855U Novel on-load tap-changer support used in transformer |
| 03/30/2011 | CN101996753A Transformer-based circuit |
| 03/30/2011 | CN101996752A Transformer split-type arcless on-load tap switch |
| 03/29/2011 | US7915766 Preventive maintenance tapping and duty cycle monitor for voltage regulator |
| 03/23/2011 | CN201773684U Strip-shaped excitation-free tap switch body |
| 03/23/2011 | CN201773683U Main shaft system of drum excitation-free tap switch |
| 03/23/2011 | CN201773682U Positive and negative regulation cage type non-excitation tapping switch |
| 03/17/2011 | WO2011029251A1 Non-excitation cage-shaped voltage-regulation tap changer for transformer |
| 03/17/2011 | US20110063064 Power transformer having a stepping switch |
| 03/16/2011 | EP2294495A1 Voltage regulation system |
| 03/16/2011 | CN201765927U Compact oil-immersion type vacuum on-load tap-changer |
| 03/09/2011 | CN201758093U No-excitation voltage regulating tap switch |
| 03/09/2011 | CN101354957B Large-capacity double-body pressure-regulating phase-shifting transformer |
| 03/08/2011 | CA2343677C Transverse flux induction heating device with a variable width, magnetic circuit |
| 03/03/2011 | WO2011024180A1 Fault current limiters (fcl) with the cores saturated by non-superconducting coils |
| 03/03/2011 | WO2011024179A2 Improved fault current limiter with saturated core |
| 03/03/2011 | WO2011022906A1 Cage-style tap-changer without excitation for transformer |
| 03/03/2011 | CA2772559A1 Fault current limiters (fcl) with the cores saturated by non-superconducting coils |
| 03/03/2011 | CA2772558A1 Improved fault current limiter with saturated core |
| 02/16/2011 | CN101640116B Mine explosion-proof type loaded voltage-adjusting dry type transformer |
| 02/16/2011 | CN101430966B Thyristor direct switching on-load tap-changer |
| 02/10/2011 | DE102009035699A1 Anordnung eines Stufenschalters an einem Regeltransformator Arrangement of a tap changer to a control transformer |
| 02/09/2011 | CN201741558U Sealing lock catch |
| 02/09/2011 | CN201741557U Transformer with novel outgoing mode |
| 02/09/2011 | CN201741541U Coil structure |
| 02/09/2011 | CN101968996A Novel on-load tap changer bracket for transformer |
| 02/09/2011 | CN101968995A Loaded voltage-regulating reformation device of power transformer and transformation method thereof |
| 02/09/2011 | CN101968994A Double-ring on-load tap changer with ultrahigh impedance of 110 kV |
| 02/09/2011 | CN101968993A 220 kilovolt grade low-voltage winding split on-load voltage-regulating wind power transformer |
| 02/09/2011 | CN101968990A High-voltage station transformer with special impedance |
| 02/03/2011 | DE10224074B4 Stufenschalter Tap changer |
| 02/02/2011 | CN201733096U Controllable saturable reactor |
| 02/02/2011 | CN201732669U Single-phase drum-shaped non-excited tap switch with shielding structure |
| 02/02/2011 | CN201732668U Ultrahigh voltage on-load voltage-regulating autotransformer |
| 02/02/2011 | CN201732667U Three-phase three-column double-power amorphous alloy electric submersible pump transformer |
| 02/02/2011 | CN201732666U Double-power iron core transformer |
| 02/02/2011 | CN201732665U Dual-power electric submersible pump transformer |
| 02/02/2011 | CN201732664U Double-power-source transformer |
| 02/02/2011 | CN201732663U Amorphous alloy electric submersible pump transformer |
| 01/26/2011 | EP2278428A2 Diagnostic system for protecting a tap-changer |
| 01/26/2011 | CN201725676U Body structure of primary dual-voltage SCB10 dry type transformer |
| 01/26/2011 | CN201725675U Transformer for wind power test |
| 01/26/2011 | CN101958195A Arc-less on-load tap-changer for transformer |
| 01/26/2011 | CN101958188A Manual control device without excited tap switch |
| 01/26/2011 | CN101958187A All-insulated on-load voltage-regulating transformer angularly connected on 220-kilovolt high voltage side |
| 01/26/2011 | CN101958186A 220,000-volt power transformer for switching and regulating voltages of different voltage classes |
| 01/19/2011 | CN201717107U Mine flame-proof transformer bar-type none-excitation tap switch |
| 01/19/2011 | CN201717106U High-power water-cooled transformer with middle tap |
| 01/19/2011 | CN201717105U Power transformer |
| 01/19/2011 | CN201717104U Oil-immersed transformer |
| 01/19/2011 | CN101499373B Magnetic modulating method and apparatus of hollow filter reactor |
| 01/18/2011 | US7871410 System for, and method of, heating a biological site in a patient's body |
| 01/12/2011 | CN201708028U Transformer with improved structure |
| 01/06/2011 | WO2011002829A1 Ignition coil |
| 01/05/2011 | CN201698881U On-load voltage regulating structure of 110kV power transformer |
| 01/05/2011 | CN201698880U Shell transformer regulating winding |
| 01/05/2011 | CN201698879U Dual-voltage dry-type transformer |
| 01/05/2011 | CN201698878U Dual-voltage transformer |
| 01/05/2011 | CN101425358B Lightning current waveform forming inductor |
| 12/29/2010 | CN201689774U Dual-voltage antitheft transformer |
| 12/29/2010 | CN201689773U Optical electronic forward and backward adjustment on-load tap-changer |
| 12/29/2010 | CN201689762U Online oil filter device of intelligent on-load tap changer |
| 12/29/2010 | CN101930836A Double-voltage oil immersed transformer |
| 12/29/2010 | CN101097805B Transformer having drag-head switch and transformation method of transformer drag-head |
| 12/23/2010 | DE102009025358A1 Stepping switch for transformer, has movable contact piece provided in switch chamber and closed during connection of pre-selected contacts opposite to force of spring when switch is connected between pre-selected contacts |
| 12/22/2010 | CN201681710U Transformer with load tap switch |
| 12/22/2010 | CN101923952A Energy-saving control method for on-load capacitance-adjusting transformer |
| 12/22/2010 | CN101923951A Improved switching mechanism of vacuum on-load tap changer |
| 12/22/2010 | CN101552114B Application method of tapping switch adopting M type in star/angle conversion coil |
| 12/15/2010 | CN201673793U Hoisting bracket for on-load voltage regulation switch of transformer |
| 12/15/2010 | CN101919153A An apparatus and method for starting and stopping an AC induction motor |
| 12/15/2010 | CN101919012A Electrically variable inductor, associated tunable filter and methods |
| 12/15/2010 | CN101419861B Large capacity single body phase angle regulator |
| 12/15/2010 | CN101388280B Multi-stage dry voltage regulating transformer |
| 12/14/2010 | US7852650 Selectable line voltage inverters and associated methods |
| 12/08/2010 | CN201667280U 20-kilovolt on-load capacitance-adjusting oil-immersed type power transformer |
| 12/08/2010 | CN1794554B Power source for plasma device |
| 12/08/2010 | CN101911422A A fault current limiter |
| 12/08/2010 | CN101430967B Thyristor resistor transition switching on-load tap-changer |
| 12/08/2010 | CN101388282B Frame type dry hollow controllable reactor |
| 12/01/2010 | CN201663047U Inverted current transformer with changeable current ratio |
| 12/01/2010 | CN201663043U 220,000 volts autotransformer with on-load voltage regulation |
| 12/01/2010 | CN201663042U Direct current-excited controllable saturable reactor |
| 12/01/2010 | CN101901046A Input device with adjustment structure and wireless pen thereof |
| 11/24/2010 | CN201655564U Novel connection structure of combined type on-load tap-changer moving contact |
| 11/24/2010 | CN201655520U Simulated voltage transformer |
| 11/24/2010 | CN201655516U Tap insulation plate for neutral point exciterless voltage regulation of mine-use dry transformer |
| 11/24/2010 | CN201655515U Double-voltage double-shunting dry-type transformer |
| 11/24/2010 | CN201655514U Dry type distribution transformer capable of inputting 10kV voltage and 20kV voltage by means of transformation |
| 11/24/2010 | CN201655513U Transformer high-voltage coil shunting tap structure |
| 11/23/2010 | US7839254 Transformer with high voltage isolation |
| 11/17/2010 | CN201638660U Tapping switch gear-shifting operation device |
| 11/17/2010 | CN201638659U Underground transformer convertible between high voltages of 10KV and 20KV |
| 11/17/2010 | CN101887798A Transformer with novel line outgoing mode |
| 11/17/2010 | CN101354956B Large-capacity double-body phase-shifting transformer |
| 11/17/2010 | CN101118803B Distributing transformator electronic type loaded automatic wide region voltage regulating device |
| 11/11/2010 | WO2010127759A1 Method for gas analysis of on-load tap changers |
| 11/10/2010 | EP1350292B1 Condition diagnosing |
| 11/10/2010 | CN201629209U Transformer for polycrystalline silicon reduction furnace |