Details

Introduced: September 1968

Full Title

High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Details

Of 14 combined children, 9 exist in both systems.

5 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

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H01H 2033/028 2nd only CPC only CPC only
H01H 33/021 CPC only CPC only
H01H 33/022 +1 CPC CPC only CPC only
H01H 33/025 CPC only CPC only
H01H 33/027 CPC only CPC only
H01H 33/04 Means for extinguishing or preventing arc between current-carrying parts +1 CPC IPC+CPC Available in IPC and CPC
H01H 33/24 Means for preventing discharge to non-current-carrying parts, e.g. using corona ring +1 CPC IPC+CPC Available in IPC and CPC
H01H 33/26 Means for detecting the presence of an arc or other discharge IPC+CPC Available in IPC and CPC
H01H 33/28 Power arrangements internal to the switch for operating the driving mechanism +1 CPC IPC+CPC Available in IPC and CPC
H01H 33/42 Driving mechanisms +2 CPC IPC+CPC Available in IPC and CPC
H01H 33/44 Devices for ensuring operation of the switch at a predetermined point in the AC cycle (circuit arrangements H01H33/59) IPC+CPC Available in IPC and CPC
H01H 33/46 Interlocking mechanisms IPC+CPC Available in IPC and CPC
H01H 33/53 Cases (for switchgear H02B1/26); Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices since 1980 −1 IPC IPC+CPC Available in IPC and CPC
H01H 33/59 Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle +2 CPC IPC+CPC Available in IPC and CPC