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)
08/2012
08/29/2012CN102651273A Arcless on-load volume regulation and voltage regulation distribution transformer
08/23/2012DE102011012080A1 Stufenschalter Tap changer
08/22/2012CN202394777U Dry-type excitation-free star-delta change-over switch
08/22/2012CN202394726U Dry-type excitation-free high voltage tapping switch
08/22/2012CN202394680U Large-power rectifier transformer of charger
08/22/2012CN102647093A Novel dual power on-load voltage regulation rectifier transformer
08/22/2012CN102647092A Voltage regulating device for low voltage side of alternating-current power transmission and transformation
08/22/2012CN102169751B Bar-shaped no-excitation tap switch with gear positioning
08/15/2012EP2486577A1 Tap changer
08/15/2012EP1941592B1 Fault current limiters (fcl) with the cores saturated by superconducting coils
08/15/2012CN202384158U Super-capacity three-phase integrated generator transformer
08/15/2012CN202384156U Dry transformer capable of converting voltage between 20 kV and 10 kV
08/15/2012CN202384155U Double-body iron core structure of large generator transformer
08/09/2012WO2012103587A1 Fault current limiter with shield and adjacent cores
08/09/2012DE202010017767U1 Schrittschaltgetriebe für Laststufenschalter von Stufentransformatoren Step manual for OLTC transformers of stages
08/09/2012DE102011010392A1 Stepping switch, has contact members rotatably arranged in plane, and shift members for enabling switchable electrical conductive connection with respective electrical contact members, where shift members are not assigned to defined phase
08/09/2012CA2826457A1 Fault current limiter with shield and adjacent cores
08/09/2012CA2825987A1 Tap changer
08/08/2012CN202373439U Power transformer capable of freely switching primary side voltage
08/08/2012CN202373438U Dual-voltage dry-type transformer
08/08/2012CN202373437U Primary and secondary transformer
08/08/2012CN202373436U Voltage matching compensator for electric network
08/08/2012CN101807472B Vacuum tube group for replacing copper-tungsten contact group of on-load tap changer
08/07/2012CA2689788C Matching turns ratio and resistance ratio in a transformer having a multilayer winding
08/02/2012DE112009005212T5 Spannungsfreier käfigförmiger Spannungsregelungs-Stufenschalter für einen Transformator Tension-free cage-shaped voltage regulation tap changer for a transformer
08/01/2012EP2481069A1 A fault current limiter
08/01/2012CN202363229U Electric reactor, power supply system and electric motor voltage regulating device
08/01/2012CN202363228U 500kV-grade three-phase three-winding excitation-free pressure regulating high-impedance power transformer
08/01/2012CN102624004A Magnetic valve controllable reactor
08/01/2012CN102623210A Gear box with position indication function
08/01/2012CN102623208A Manual driving mechanism of off-circuit tap-changer
08/01/2012CN102623203A Strip-type off-circuit tap changer
08/01/2012CN102623202A Composite vacuum on-load tap-changer switching assembly
08/01/2012CN102623201A Composite vacuum on-load tap-changer with external selector
08/01/2012CN102623156A On-load multistage adjustable-capacity tap switch
08/01/2012CN102623155A Integrated plug-pull combined type vacuum on-load tap changer
08/01/2012CN102623148A High-voltage coil reverse serial structure for on-load voltage regulating power transformer
07/2012
07/26/2012DE102011008964A1 Stufenschalter Tap changer
07/25/2012EP2479880A1 Power supply assembly for rectification
07/25/2012DE202011109907U1 Stufenschalter Tap changer
07/25/2012CN202352498U Three-winding on-load voltage-regulating step-down transformer with taps at high, medium and low voltage
07/25/2012CN202352497U On-load voltage regulation tapping switch gear box fixing plate capable of being conveniently positioned
07/25/2012CN102611332A Power supply assembly for rectification
07/25/2012CN102610377A Coil and method for manufacturing the same
07/19/2012DE102011008702A1 Stufenschalter mit einem Vorwähler Step switch with a selection
07/18/2012CN102592808A On-load tap switch and operating method thereof
07/18/2012CN102592807A On-load tap switch of saturable reactor with switch characteristics
07/18/2012CN102226969B On-load tapping switch of tandem type composite change-over switch transformer
07/18/2012CN101702367B Saturable reactor used for direct-current current transformation valve
07/18/2012CN101436462B Wire splice structure of transformer with peripheral voltage regulation change
07/18/2012CN101170007B Method for adjusting mutual induction effect
07/12/2012DE102011008394A1 Stufenschalter Tap changer
07/11/2012EP2474011A1 Fault current limiters (fcl) with the cores saturated by non-superconducting coils
07/11/2012EP2474010A2 Improved fault current limiter with saturated core
07/11/2012CN202332551U Novel cross magnetization direct current magnetism-assisting adjustable reactor
07/11/2012CN202332550U 一种无载调压变压器的绕组分接段结构 A non-load transformer tap winding segment structure
07/11/2012CN202332478U 双电压变压器 Dual voltage transformer
07/11/2012CN202315528U 一种有载分接开关在线滤油一体机 A kind of on-load tap-line oil filter machine
07/11/2012CN102568789A Cylindrical coil structure for multi-stage capacity regulating transformer
07/11/2012CN102568788A Single-body transformer having novel wiring structure
07/11/2012CN102568787A Large single-phase electric furnace transformer with continuous voltage regulating function
07/11/2012CN102568773A Cylindrical voltage regulator device
07/05/2012WO2012089717A1 Transformer-rectifier unit
07/05/2012CA2822304A1 Transformer-rectifier unit
07/04/2012CN202307477U 智能集成高低压同步有载调容分接开关 Intelligent integrated high voltage synchronous transfer capacity load tap changer
07/04/2012CN202307476U High-voltage dual-ratio transformer
07/04/2012CN102543402A Power transformer capable of smoothly adjusting output voltage
07/04/2012CN102543401A Two-differential tertiary winding voltage regulating rectifier transformer
07/04/2012CN102543400A Low-voltage regulation coil device of traction transformer
07/04/2012CN102543399A Phase-shifting voltage-regulating method of three-phase dry-type rectifier transformer of short-wave transmitter power supply
07/04/2012CN102543398A Transformer for realizing voltage change through changeover of leads
07/04/2012CN102543397A Ultrahigh-voltage large-capacity split-winding type transformer
07/04/2012CN102543361A Tunable inductor
07/04/2012CN102534665A Baking groove transformer capable of finely adjusting output and moving
07/04/2012CN101826392B Voltage-regulating winding of shell transformer
07/03/2012DE202009018642U1 Stufenschalter mit Halbleiter-Schaltelementen Position switch with semiconductor switching elements
06/2012
06/30/2012CA2750356A1 Apparatus and method for evaluating health of tab changer
06/27/2012CN202285193U 一种宽幅无线调压配电变压器 One kind of wireless wide regulating distribution transformer
06/27/2012CN102522189A High-power rectifier transformer of charger
06/27/2012CN101692398B High-voltage booster transformer
06/21/2012US20120154966 Fault current limiters (fcl) with the cores saturated by non-superconducting coils
06/20/2012CN202282260U 分接开关操纵机构的电动、手动转换装置 Tap-control mechanism of electric, manual conversion device
06/20/2012CN202282234U 一种有载调容开关 A kind of load transfer capacity of switches
06/20/2012CN202282233U 一种分接开关 One kind of tap changer
06/20/2012CN202282232U Double capacity power transformer
06/20/2012CN102500153A On-load tap-changer and on-line oil filter integrated machine and oil filtering method
06/20/2012CN101996752B Transformer split-type arcless on-load tap switch
06/14/2012DE102010015051B4 Mechanischer Schaltkontakt Mechanical switch contact
06/13/2012CN202276079U 双电压矿用隔爆移动变电站 Dual voltage substation mine explosion-proof mobile
06/13/2012CN202275735U 用于操作圆柱体分接开关的预选器的装置 Operating cylinder tap preselection means for
06/13/2012CN202275707U 一体式升压升流器 One-step-up converter
06/12/2012US8198882 Power converting device with high power transformation efficiency
06/07/2012WO2012072181A1 Tap changer and vacuum interrupter for a tap changer of this kind
06/06/2012CN202268258U 一种变压器分接开关绝缘操纵杆 A transformer tap-insulated lever
06/06/2012CN202268239U 一种单相10kV与20kV相互转换干式变压器 A single-phase 10kV and 20kV conversion of dry-type transformers
06/06/2012CN202268238U 一种树脂绝缘干式调容变压器 A resin insulation dry-type transformer capacity adjustment
06/06/2012CN102486962A Ring-shaped split safe voltage regulator
06/06/2012CN101677029B Design method of high tension coil of dry on-load coarse and fine voltage regulation transformer
06/06/2012CN101477886B Non-exciting shunting switch with annular dynamic contact
05/2012
05/31/2012WO2012070761A1 Tap position indicator
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