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 sub-classes 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 sub-class deals with 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; cable ducts or mountings for telephone or telegraph exchange installations H04Q 1/06)
 H02G

Note(s)

This sub-class 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 sub-class deals only with 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 FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER (interrelated control of several motors, control of a prime-mover generator combination H02P; control of high-frequency power H03B; additional use of power line or power network for transmission of information H04B)
 H02J

Note(s)

This sub-class deals with ac or dc mains or distribution networks and also deals with circuit arrangements for battery supplies, including charging or control thereof, or co-ordinated supply from two or more sources of any kind. Control of a single motor, generator or converter of the types covered by sub-classes H01F, H02K, and H02M, is dealt with in sub-class H02P; control of a single motor or generator, of the types covered by sub-class H02N, is dealt with in that sub-class.


 H02K
DYNAMO-ELECTRIC MACHINES (measuring instruments G01; dynamo-electric relays H01H 53/00; magneto-hydrodynamic machines H02N 4/00; microphones, pick-ups, telephone receivers, loud-speakers or other transmitters or receivers of sound or other mechanical waves H04R)
 H02K

Note(s)

Structural adaptation of the machine for the purposes of its control is in this sub-class, but controlling motors, generators, or converters, in general, is classified in sub-class 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 (transformers H01F; dynamo-electric converters H02K 47/00; control of converters H02P; pulse generators H03K)
 H02M

Note(s)

This sub-class deals only with circuits or apparatus for the conversion of electric power. The electrotechnical elements employed are dealt with in the appropriate sub-classes, e.g. inductors, transformers H01F, capacitors, electrolytic rectifiers H01G, mercury rectifying or other discharge tubes H01J, semiconductor devices H01L, impedance networks or resonant circuits not primarily concerned with the transfer of electric power H03H.


 H02N
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
 H02N

Note(s)

  1. This sub-class deals with (a) electrostatic generators, motors, clutches, or holding devices, (b) other non-dynamo-electric generators or motors, and (c) arrangements for starting, regulating, braking, or otherwise controlling such machines unless in conjoint operation with a second machine.
  2. Specific provision exists for generators, motors, and other means for converting between electric and other forms of energy, e.g. in sub-classes H01L, H01M, H01V, H02K, H04R.

 H02P
CONTROLLING ELECTRIC MOTORS, GENERATORS, OR CONVERTERS (structure of the starter, brake, or other control devices, see the appropriate sub-class, e.g. mechanical brake F16D, mechanical speed regulator G05D, variable resistor H01C, starter switch H01H; arrangements structurally associated with motors, generators, or converters, see the relevant sub-classes for the motors, generators, or converters; connection or control of one generator, transformer, or converter with regard to conjoint operation with a similar or other source of supply H02J)
 H02P

Note(s)

This sub-class deals with arrangements for starting, regulating, braking, or otherwise controlling motors, generators, converters, clutches, brakes of the types classified in sub-classes H01F, H02K, and H02M. Similar arrangements for the apparatus of the types classified in sub-class H02N are dealt with in that sub-class.