| Patents for H01F 29 - Variable transformers or inductances not covered by group (3,889) |
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| 08/14/2013 | DE102012202105A1 Transformator mit Stufenschalteinrichtung Transformer with Tap-changing equipment |
| 08/14/2013 | CN203134679U Vacuum on-load tap-changer |
| 08/14/2013 | CN203134603U Lower crank arm of combined on-load tap-changer tap selector |
| 08/14/2013 | CN103247433A Tapped self-coupling AC (alternating current) voltage regulator based on sectional winding with variable cross sections |
| 08/13/2013 | CA2711310C Electrically variable inductor, associated tunable filter and methods |
| 08/07/2013 | CN203119860U Novel transformer on-load tap changer |
| 08/07/2013 | CN203118791U Tap switch sliding contact |
| 08/07/2013 | CN203118743U Three-phase convertible dry-type transformer |
| 08/07/2013 | CN103236743A Combined intelligent amorphous alloy transformer |
| 08/07/2013 | CN103236344A Continuous transformer |
| 07/31/2013 | EP2619781A1 Energy store for an on-load tap changer |
| 07/31/2013 | EP2509082B1 Fluid insulated high voltage coil |
| 07/31/2013 | CN203104304U Novel head and tail two-end independent load self-coupling voltage-adjustment combination rectifying transformer |
| 07/31/2013 | CN203103103U On-load voltage adjusting switch of bell jar type power transformer |
| 07/31/2013 | CN203103101U Transformer on-load switch fixing device |
| 07/31/2013 | CN203103083U Power transformer |
| 07/31/2013 | CN203103057U Adjusting device on distribution transformer |
| 07/31/2013 | CN103227043A Carbon brush contact-type self-coupling-type AC (alternating current) voltage regulator based on segmented variable cross-section windings |
| 07/25/2013 | WO2012126884A3 Series voltage regulator with electronics protected against short-circuits by magnetic circuit-based decoupling using holes and windows |
| 07/24/2013 | EP2617048A1 Tap changer and vacuum switching tube for such a tap changer |
| 07/24/2013 | CN203085378U No-excitation tap switch for transformer |
| 07/24/2013 | CN203085329U On-load voltage regulating autotransformer with double apparatus bodies |
| 07/24/2013 | CN103219141A Alternating current inductor with controllable inductance value |
| 07/24/2013 | CN103219138A High-voltage adjustable reactor |
| 07/24/2013 | CN103219137A Self-adapted load type distribution transformer |
| 07/23/2013 | DE202012101477U1 Laststufenschalter OLTC |
| 07/23/2013 | DE202012101476U1 Laststufenschalter OLTC |
| 07/23/2013 | DE202012101475U1 Laststufenschalter OLTC |
| 07/17/2013 | CN203070905U Novel capacitance-adjusting transformer |
| 07/17/2013 | CN101807474B Tap changer switch |
| 07/10/2013 | EP2612336A1 Magnetic non-contact switch |
| 07/10/2013 | CN203055640U On-load tap changer |
| 07/10/2013 | CN102237177B Device for filtering oil in electrified manner for on-load tap-changer of transformer |
| 07/04/2013 | WO2012126860A3 A controller for a transformer |
| 07/03/2013 | CN203038770U 10 kV and 20 kV conversion distribution transformer |
| 07/03/2013 | CN103189948A On-load tap changer |
| 07/03/2013 | CN103187183A Oil immersion type double-layer contact vacuum on-load voltage regulation tapping switch for intelligent distribution network |
| 07/03/2013 | CN103187155A Layered voltage regulation coil |
| 06/27/2013 | DE102011056853A1 Spulenträger sowie elektromagnetische Stellvorrichtung mit Spulenträger Coil support and electromagnetic actuator with coil carrier |
| 06/26/2013 | EP2606499A1 On-load tap changer |
| 06/26/2013 | EP2606497A1 Tap changer |
| 06/26/2013 | CN203026328U Adjustable capacity transformer |
| 06/26/2013 | CN103177861A On-load capacity-adjusting switch high voltage primary loop structure |
| 06/26/2013 | CN103177860A Stereoscopic rolling iron core intelligent transformer |
| 06/26/2013 | CN103177859A On-load tap changing transformer structure |
| 06/25/2013 | CA2727976C Self power-acquiring quick-responsive controllable reactor |
| 06/24/2013 | DE202012101039U1 Prüfanlage für Stufenschalter hoher Leistung ohne Einfluss auf das Stromnetz Testing facility for tap changer high power without impact on the electricity grid |
| 06/20/2013 | DE102009025358B4 Stufenschalter mit einem Vorwähler Step switch with a selection |
| 06/19/2013 | EP2603920A1 Coil arrangement, in particular an alternating-current transformer, use and arrangement for energy transmission without contact |
| 06/19/2013 | CN203013485U Dry-type hollow adjustable reactor |
| 06/19/2013 | CN103166330A Adjustable radio-frequency power supply capable of producing multiple pole fields |
| 06/19/2013 | CN102360845B Single-phase multi-tap isolation transformer |
| 06/13/2013 | WO2013082668A1 Fault current limiter |
| 06/13/2013 | CA2858450A1 Fault current limiter |
| 06/12/2013 | CN202996615U Rolling type moving contact group of combined on-load tap-changer selector |
| 06/12/2013 | CN202996565U 10KV-20KV voltage transformer |
| 06/12/2013 | CN103155074A Tap changer |
| 06/12/2013 | CN103151152A Externally-hung type on-load tap-changer with suspended core |
| 06/12/2013 | CN102075007B Switching switch device |
| 06/12/2013 | CN101901046B Input device with adjustment structure and wireless pen thereof |
| 06/12/2013 | CN101867393B Transmission device for transmitting data by striding over power line transformer |
| 06/06/2013 | WO2013080298A1 Transformer and transformer device including same |
| 06/05/2013 | CN202977146U Single-phase superhigh-voltage large-capacity off-circuit-regulation alternating current step-up transformer |
| 06/05/2013 | CN202977145U Independent-voltage-regulating three-winding off-circuit-regulation power transformer |
| 06/05/2013 | CN202977092U Device for supply oil for load switch under charged condition |
| 06/05/2013 | CN103137310A Electric reactor with adjustable inductance |
| 06/05/2013 | CN102412056B Voltage-regulating winding structure of splitting winding type on-load tap-changing transformer |
| 05/28/2013 | US8453092 T-coil network design for improved bandwidth and electrostatic discharge immunity |
| 05/23/2013 | WO2012104232A3 Stepping switch |
| 05/23/2013 | DE102011119318A1 Stufenschalter mit Vakuumschaltröhren Tap changer with vacuum interrupters |
| 05/22/2013 | CN202948829U Three-winding on-load voltage regulation power transformer with excitation-free voltage regulation in medium voltage |
| 05/22/2013 | CN202948828U On-load intelligent capacity adjusting transformer |
| 05/22/2013 | CN103119679A Tap changer and vacuum switching tube for such a tap changer |
| 05/22/2013 | CN103119668A 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 |
| 05/15/2013 | CN202940141U Cylindrical load switcher for tap switch of staged transformer |
| 05/15/2013 | CN202940114U Single-phase sulfur hexafluoride power transformer with off-circuit tap-changer |
| 05/15/2013 | CN102360851B Combined permanent-magnetic mechanism voltage/capacity adjusting switch |
| 05/15/2013 | CN102360850B Capacitance switch for transformer |
| 05/15/2013 | CN102360843B Distribution transformer capable of automatically adjusting capacitance and voltage |
| 05/14/2013 | CA2639182C Method and apparatus for mounting a circuit board to a transformer |
| 05/08/2013 | CN103098163A Energy store for an on-load tap changer |
| 05/08/2013 | CN102097246B Rotational structure of vacuum on-load tap changer (OLTC) |
| 05/01/2013 | EP2586049A1 Tap changer |
| 05/01/2013 | CN202917368U Operation positioning structure of off-circuit tap switch |
| 05/01/2013 | CN202914920U Multifunctional degassing flange used for transformer on-load tap-changer |
| 05/01/2013 | CN103081042A Tap changer |
| 05/01/2013 | CN103077812A Novel capacity regulating transformer |
| 04/24/2013 | EP2583289A1 On-load tap changer |
| 04/24/2013 | CN202905486U H-grade no-load tapping switch voltage regulating transformer |
| 04/24/2013 | CN202905484U Excitation-free strip-type off-circuit tap switch |
| 04/24/2013 | CN202905433U Energy-saving transformer with self-adaptive function |
| 04/24/2013 | CN202905432U Three-phase magnetic pressure regulating type transformer |
| 04/24/2013 | CN202905431U Transformer |
| 04/24/2013 | CN202905430U Separating-magnetism regulating-pressure transformer |
| 04/24/2013 | CN202905395U Coil structure of on-load-capacity-adjustment transformer |
| 04/24/2013 | CN103069517A Magnetic non-contact switch |
| 04/24/2013 | CN103069516A On-load tap changer |
| 04/24/2013 | CN103065819A A pre-selector actuating device for a pre-selector in a tap changer |
| 04/23/2013 | US8427131 Voltage regulation at a remote location using measurements from a remote metering device |
| 04/18/2013 | DE102011116158A1 Laststufenschalter OLTC |