Patents
Sitemap › H01 - Basic electric elements › H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties › H01F 29 - Variable transformers or inductances not covered by group
Patents for H01F 29 - Variable transformers or inductances not covered by group (3,889)
12/2012
12/05/2012CN202585077U Novel phase-shifting rectifier transformer
12/05/2012CN202585074U Changeable type test intermediate transformer device
12/05/2012CN102810391A Transformer
12/05/2012CN102810390A Three-phase magnetism-dividing voltage regulating transformer and magnetism-dividing voltage regulating method thereof
12/05/2012CN102810389A Magnetism-shunting voltage regulation type transformer and magnetism-shunting voltage regulation method thereof
12/05/2012CN102810388A Transformer and shunting magnet voltage adjustment method thereof
11/2012
11/29/2012WO2012159691A1 Supplementary transformer winding
11/28/2012EP2528072A1 Transformer auxiliary winding
11/28/2012EP2526602A2 Superconducting fault current-limiter with variable impedance shunt coil
11/28/2012CN102054600B High-low shifting column change-over switch
11/21/2012EP2525375A1 Fault gas alarm system
11/21/2012CN202549593U Transformer on-load high-voltage switch hoisting rack
11/21/2012CN102789914A Non-excited tapping switch shielding cover
11/21/2012CN102789911A Excitation-free strip-type tapping switch
11/21/2012CN101968993B 220 kilovolt grade low-voltage winding split on-load voltage-regulating wind power transformer
11/14/2012CN202534486U On-load capacity-controllable transformer
11/14/2012CN102779621A Oil replacement device
11/14/2012CN101694808B Transcoding method for denary shift of transformer on-load tap-changer and transcoder
11/14/2012CN101399112B Fixed contact tap switch with rotating bearing structure
11/07/2012CN202523542U Stepless adjustable reactor for combined high-voltage compensation
11/07/2012CN202523541U Flange structure of on-load tap-changer
11/07/2012CN202523540U Dry type transformer with three different types of secondary voltage
11/07/2012CN202523539U Converter transformer
11/07/2012CN202523538U Rectifier transformer
11/07/2012CN102208265B On-load tapping switch of composite switching-type transformer
10/2012
10/31/2012EP2517216A1 Step switch comprising a polarity switch for a variable transformer
10/31/2012CN202513579U Combined high-voltage compensation on-load inductance regulation device
10/31/2012CN202507008U Safety voltage fusion welding, pressure welding and braze welding integrated machine
10/31/2012CN102760565A Loaded superconductive booster transformer
10/25/2012DE102004056943B4 Zündspule mit Magnetflussverringerndem Innenaufbau Ignition coil with Magnetflussverringerndem internal structure
10/24/2012EP2513924A1 Transformer
10/24/2012CN102136354B Large-range on-load tap changer (OLTC) for testing
10/18/2012WO2012139187A1 A transformer provided with a taps panel, an electric- insulation method taps panel of a dry distribution transformer, and a taps panel for a dry distribution transformer
10/18/2012WO2012139167A1 A fault current limiter
10/17/2012CN202495328U Low-voltage adjustable compensating inductor
10/17/2012CN102741953A Improved fault current limiter with saturated core
10/17/2012CN102737822A Compatible wind driven generator testing transformer and testing system
10/11/2012WO2012136423A1 Tap changer and vacuum interrupter for such a tap changer
10/11/2012WO2012136302A1 Fluid insulated high voltage coil
10/10/2012EP2509083A1 Voltage transformer
10/10/2012EP2509082A1 Fluid insulated high voltage coil
10/10/2012CN202487385U Two- rank-difference tertiary winding voltage regulating rectifier transformer
10/10/2012CN202487384U Magnetic valve type controllable reactor
10/10/2012CN202487383U Novel single body transformer with wiring structure
10/10/2012CN202487382U Layer type voltage regulating coil device
10/10/2012CN102723183A Inductance type on-load tap-changer
10/10/2012CN102723170A On-load tap-switch separated-type oil chamber
10/10/2012CN101661834B Off circuit tap changer for transformer
10/04/2012WO2012133535A1 Energy-storing mechanism with forcing mechanism, and on-load tap changing device
10/04/2012US20120249277 Tap changer with a polarity switch for a variable transformer
10/03/2012CN202473622U Switch device
10/03/2012CN202473569U Continuous transition on-load tap switch
10/03/2012CN202473568U On-load continuous transformer
10/03/2012CN202473567U Inductance type on-load tap-changer
10/03/2012CN202473566U 6kV-10kV dual-voltage conversion input dry type power distribution transformer
10/03/2012CN202473565U Traction transformer
10/03/2012CN202473510U On-load tap-changer separation type oil chamber
10/03/2012CN102709036A Automatic capacity regulating distribution transformer and capacity regulating method thereof
10/03/2012CN102709035A Energy-saving transformer with self-adaptation function
10/03/2012CN102709034A On-load continuous transformer
10/03/2012CN102709033A Continuous transitional on-load tap switch
10/03/2012CN102208266B Small-sized power transformer
10/03/2012CN102024552B Large-rotating angle quick mechanism used for on-load tap-changer
10/03/2012CN101919153B An apparatus and a method for starting and stopping an AC induction motor
09/2012
09/27/2012WO2012126886A1 Series current limiter using a magnetic circuit comprising holes and windows
09/26/2012CN202454446U Switch
09/26/2012CN202454445U Converter transformer tapping switch shift translation device
09/26/2012CN202454426U On-load capacity adjustable silicon steel transformer
09/26/2012CN202454425U On-load capacity-adjusting amorphous transformer
09/26/2012CN202454424U Cylindrical voltage regulation coil
09/26/2012CN202454423U No-load switch of transformer
09/26/2012CN102693822A Column type voltage regulator
09/26/2012CN102693821A Intelligent on-load dry type capacitance-adjusting transformer
09/26/2012CN102693820A Off-circuit tap-changer
09/20/2012DE102011014325A1 Laststufenschalter OLTC
09/19/2012CN102687216A Fault current limiters (FCL) with the cores saturated by non-superconducting coils
09/19/2012CN102682979A Novel phase shifting rectifier transformer
09/19/2012CN102682978A Configuration method for capacity regulating and value fixing of on-load capacity regulating capacity distribution transformer
09/19/2012CN102682977A Transformer for reducing extra-high voltage 1000 kilovolts to 220 kilovolts
09/13/2012DE102011013749A1 Laststufenschalter OLTC
09/12/2012CN202434356U Tap switch
09/12/2012CN202434322U Structure of on-load voltage regulating transformer
09/12/2012CN202434321U On-load voltage regulating power transformer
09/12/2012CN202434320U Large continuous voltage-regulating single-phase electric furnace transformer
09/12/2012CN102667975A Step switch comprising a polarity switch for a variable transformer
09/12/2012CN102664094A Single-phase dry type converter transformer for suppressing polysilicon and voltage regulation way thereof
09/12/2012CN102077305B Tap switch with semiconductor switching elements
09/12/2012CN101345123B Inductor-adjustable apparatus
09/11/2012DE202010017792U1 Mechanischer Schalter für einen Laststufenschalter Mechanical switch for a load tap changer
09/07/2012WO2012116946A1 Dynamically biased inductor
09/06/2012US20120223796 Variable inductor
09/06/2012DE112009005164T5 Spannungsfreier käfigförmiger Stufenschalter für einen Transformator Tension-free cage-shaped tap changer for a transformer
09/05/2012CN202422974U On-load voltage regulation transformer
09/05/2012CN202422973U Power transformer
09/05/2012CN202422972U Dry-type rectifier transformer
09/05/2012CN202422948U Cylinder type pressure adjuster
09/05/2012CN101692393B Switch of loaded-regulating capacity regulating transformer in power grid of 20KV and below
08/2012
08/30/2012DE102012201826A1 Hochfrequenz -Drehtransformator für Synchron-Elektromaschinen RF -Drehtransformator for synchronous electric machine
08/30/2012CA2847956A1 Tap changer
08/29/2012CN202405084U Intelligent low-voltage on-load voltage regulating transformer
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ... 39