| H | SK | ELECTRICITY |
| H02 | KL | GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER |
| H02J | UKL | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY (power supply circuits for apparatus for measuring X-radiation, gamma radiation, corpuscular radiation or cosmic radiation G01T 1/175; electric power supply circuits specially adapted for use in electronic time-pieces with no moving parts G04G 19/00; for digital computers G06F 1/18; for discharge tubes H01J 37/248; circuits or apparatus for the conversion of electric power, arrangements for control or regulation of such circuits or apparatus H02M; interrelated control of several motors, control of a prime-mover/generator combination H02P; control of high-frequency power H03L; additional use of power line or power network for transmission of information H04B) |
| H02J 1/00 | HGR | Circuit arrangements for dc mains or dc distribution networks |
| H02J 1/02 | UGR1 | | . | Arrangements for reducing harmonics or ripples (in converters H02M 1/00) |
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| H02J 1/04 | UGR1 | | . | Constant-current supply systems |
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| H02J 1/06 | UGR1 | |
| H02J 1/08 | UGR1 | | . | Three-wire systems; Systems having more than three wires |
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| H02J 1/10 | UGR1 | | . | Parallel operation of dc sources (involving batteries H02J 7/34) |
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| H02J 1/12 | UGR2 | | . . | Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier |
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| H02J 1/14 | UGR1 | | . | Balancing the load in a network (by batteries H02J 7/34) |
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| H02J 1/16 | UGR2 | | . . | using dynamo-electric machines coupled to flywheels |
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| H02J 3/00 | HGR | Circuit arrangements for ac mains or ac distribution networks |
| H02J 3/01 | UGR1 | | . | Arrangements for reducing harmonics or ripples (in converters H02M 1/00) [3] |
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| H02J 3/02 | UGR1 | | . | using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power |
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| H02J 3/04 | UGR1 | | . | for connecting networks of the same frequency but supplied from different sources |
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| H02J 3/06 | UGR2 | | . . | Controlling transfer of power between connected networks; Controlling sharing of load between connected networks |
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| H02J 3/08 | UGR2 | | . . | Synchronising of networks |
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| H02J 3/10 | UGR1 | | . | Constant-current supply systems |
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| H02J 3/12 | UGR1 | | . | for adjusting voltage in ac networks by changing a characteristic of the network load |
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| H02J 3/14 | UGR2 | | . . | by switching loads on to, or off from, network, e.g. progressively balanced loading |
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| H02J 3/16 | UGR2 | | . . | by adjustment of reactive power |
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| H02J 3/18 | UGR1 | | . | Arrangements for adjusting, eliminating, or compensating reactive power in networks (for adjustment of voltage H02J 3/12; use of Petersen coils H02H 9/08) |
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| H02J 3/20 | UGR2 | | . . | in long overhead lines |
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| H02J 3/22 | UGR2 | |
| H02J 3/24 | UGR1 | | . | Arrangements for preventing or reducing oscillations of power in networks (by control effected upon a single generator H02P 9/00) |
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| H02J 3/26 | UGR1 | | . | Arrangements for eliminating or reducing asymmetry in polyphase networks |
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| H02J 3/28 | UGR1 | | . | Arrangements for balancing the load in a network by storage of energy |
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| H02J 3/30 | UGR2 | | . . | using dynamo-electric machines coupled to flywheels |
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| H02J 3/32 | UGR2 | | . . | using batteries with converting means |
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| H02J 3/34 | UGR1 | | . | Arrangements for transfer of electric power between networks of substantially different frequency (frequency converters H02M) |
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| H02J 3/36 | UGR1 | | . | Arrangements for transfer of electric power between ac networks via a high-tension dc link |
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| H02J 3/38 | UGR1 | | . | Arrangements for parallelly feeding a single network by two or more generators, converters, or transformers |
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| H02J 3/40 | UGR2 | | . . | Synchronising a generator for connection to a network or to another generator |
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| H02J 3/42 | UGR3 | | . . . | with automatic parallel connection when synchronism is achieved |
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| H02J 3/44 | UGR3 | | . . . | with means for ensuring correct phase sequence |
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| H02J 3/46 | UGR2 | | . . | Controlling the sharing of output between the generators, converters, or transformers |
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| H02J 3/48 | UGR3 | | . . . | Controlling the sharing of the in-phase component |
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| H02J 3/50 | UGR3 | | . . . | Controlling the sharing of the out-of-phase component |
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| H02J 4/00 | HGR | Circuit arrangements for mains or distribution networks not specified as ac or dc [2] |
| H02J 5/00 | HGR | Circuit arrangements for transfer of electric power between ac networks and dc networks (H02J 3/36 takes precedence) |
| H02J 7/00 | HGR | Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries |
| H02J 7/02 | UGR1 | | . | for charging batteries from ac mains by converters |
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| H02J 7/04 | UGR2 | | . . | Regulation of the charging current or voltage |
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| H02J 7/06 | UGR3 | | . . . | using discharge tubes or semiconductor devices |
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| H02J 7/08 | UGR4 | | . . . . | using discharge tubes only |
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| H02J 7/10 | UGR4 | | . . . . | using semiconductor devices only |
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| H02J 7/12 | UGR3 | | . . . | using magnetic devices having controllable degree of saturation, i.e. transductors |
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| H02J 7/14 | UGR1 | | . | for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle |
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| H02J 7/16 | UGR2 | | . . | Regulation of the charging current or voltage by variation of field |
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| H02J 7/18 | UGR3 | | . . . | due to variation of ohmic resistance in field circuit, using resistance switching in or out of circuit step by step |
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| H02J 7/20 | UGR3 | | . . . | due to variation of continuously-variable ohmic resistor |
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| H02J 7/22 | UGR3 | | . . . | due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator |
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| H02J 7/24 | UGR3 | | . . . | using discharge tubes or semiconductor devices |
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| H02J 7/26 | UGR3 | | . . . | using magnetic devices with controllable degree of saturation |
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| H02J 7/28 | UGR3 | | . . . | using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device |
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| H02J 7/30 | UGR3 | | . . . | using armature-reaction-excited machines |
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| H02J 7/32 | UGR1 | | . | for charging batteries from a charging set comprising a non-electric prime mover |
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| H02J 7/34 | UGR1 | | . | Parallel operation in networks using both storage and other dc sources, e.g. providing buffering (H02J 7/14 takes precedence) [4] |
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| H02J 7/35 | UGR2 | | . . | with light sensitive cells [4] |
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| H02J 7/36 | UGR1 | | . | Arrangements using end-cell switching |
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| H02J 9/00 | HGR | Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (with provision for charging standby battery H02J 7/00) |
| H02J 9/02 | UGR1 | | . | in which an auxiliary distribution system and its associated lamps are brought into service |
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| H02J 9/04 | UGR1 | | . | in which the distribution system is disconnected from the normal source and connected to a standby source |
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| H02J 9/06 | UGR2 | | . . | with automatic change-over |
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| H02J 9/08 | UGR3 | | . . . | requiring starting of a prime-mover |
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| H02J 11/00 | HGR | Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed, or converted (emergency or standby arrangements H02J 9/00) |
| H02J 13/00 | HGR | Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network |
| H02J 15/00 | HGR | Systems for storing electric energy (mechanical systems therefor F01 to F04; in chemical form H01M) [2] |
| H02J 17/00 | HGR | Systems for supplying or distributing electric power by electromagnetic waves [3] |