H
SECTION H — ELECTRICITY
 H02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
 H02B
SWITCHBOARDS, SWITCHYARDS, OR SWITCHGEAR, FOR THE DISTRIBUTION OF ELECTRIC POWER (electro-technical elements or the individual mounting thereof, see the subclasses for such elements, e.g. transformers H01F, switches, fuses H01H, line connectors H01R; interlocking between switches or between switches and gates, doors, shutters, or like movable parts of switchboards, switchyards, or switchgear H01H; installation of lines, cables, or other conductors for distribution H02G)
 H02B

Note(s)

This subclass covers switchboards, switchyards, switchgear, or the association of switching devices with each other or with other devices, e.g. transformers, fuses, meters, distribution boards, such associations constituting substations or distribution points.


 H02G
INSTALLATION OF ELECTRIC CABLES OR LINES (distribution points incorporating switches H02B; guiding or winding-up telephone cord H04M 1/15; cable ducts or mountings for telephone or telegraph exchange installations H04Q 1/06)
 H02G

Note(s)

This subclass covers installation of communication cables or lines or of lightning conductors as well as installation of power cables or lines.


 H02H
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired working conditions G01R, e.g. G01R 31/00, G08B; locating faults along lines G01R 31/08; emergency protective devices H01H)
 H02H

Note(s)

This subclass covers only circuit arrangements for the automatic protection of electric lines or electric machines or apparatus in the event of an undesired change from normal working conditions.


 H02J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY (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

Note(s)

  1. This subclass covers:
    • ac or dc mains or distribution networks;
    • circuit arrangements for battery supplies, including charging or control thereof, or co-ordinated supply from two or more sources of any kind;
    • systems for supplying or distributing electric power by electromagnetic waves.
  2. This subclass does not cover:

 H02K
DYNAMO-ELECTRIC MACHINES (measuring instruments G01; dynamo-electric relays H01H 53/00; conversion of dc or ac input power into surge output power H02M 9/00; microphones, pick-ups, telephone receivers, loud-speakers or other transmitters or receivers of sound or other mechanical waves H04R)
 H02K

Note(s)

  1. This subclass covers structural adaptation of the machine for the purposes of its control.
  2. This subclass does not cover starting, regulating, electronically commutating, braking, or otherwise controlling motors, generators or dynamo-electric converters, in general, which are covered by subclass H02P.

 H02M
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (systems for regulating electric or magnetic variables in general, e.g. using transformers, reactors or choke coils, combination of such systems with static converters G05F; transformers H01F; connection or control of one converter with regard to conjoint operation with a similar or other source of supply H02J; dynamo-electric converters H02K 47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P; pulse generators H03K)
 H02M

Note(s)

  1. This subclass covers only circuits or apparatus for the conversion of electric power, or arrangements for control or regulation of such circuits or apparatus.
  2. This subclass does not cover the individual electro-technical devices employed when converting electric power. Such devices are covered by the relevant subclasses, e.g. inductors, transformers H01F, capacitors, electrolytic rectifiers H01G, mercury-vapour rectifying or other discharge tubes H01J, semiconductor devices H01L, impedance networks or resonant circuits not primarily concerned with the transfer of electric power H03H.
  3. In this subclass, the following term is used with the meaning indicated:
    • "conversion", in respect of an electric variable, e.g. voltage or current, means the change of one or more of the parameters of the variable, e.g. amplitude, frequency, phase, polarity.

 H02N
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
 H02N

Note(s)

  1. This subclass covers:
    • electrostatic generators, motors, clutches, or holding devices;
    • other non-dynamo-electric generators or motors;
    • holding or levitation devices using magnetic attraction or repulsion;
    • arrangements for starting, regulating, braking, or otherwise controlling such machines unless in conjoint operation with a second machine.
  2. Specific provision for generators, motors, or other means for converting between electric and other forms of energy also exists in other subclasses, e.g. in subclasses H01L, H01M, H02K, H04R.

 H02P
CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS (structure of the starter, brake, or other control devices, see the relevant subclasses, e.g. mechanical brake F16D, mechanical speed regulator G05D, variable resistor H01C, starter switch H01H; systems for regulating electric or magnetic variables using transformers, reactors or choke coils G05F; arrangements structurally associated with motors, generators, dynamo-electric converters, transformers, reactors or choke coils, see the relevant subclasses, e.g. H01F, H02K; connection or control of one generator, transformer, reactor, choke coil, or dynamo-electric converter with regard to conjoint operation with similar or other source of supply H02J; control or regulation of static converters H02M)
 H02P

Note(s)

  1. This subclass covers arrangements for starting, regulating, electronically commutating, braking, or otherwise controlling motors, generators, dynamo-electric converters, clutches, brakes, gears, transformers, reactors or choke coils, of the types classified in the relevant subclasses, e.g. H01F, H02K.
  2. This subclass does not cover similar arrangements for the apparatus of the types classified in subclass H02N, which arrangements are covered by that subclass.