DIFF Subgroup
H02P 25/18 with arrangements for switching the windings, e.g. with mechanical switches or relays
Introduced: January 2006
Full Title
Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details > characterised by the circuit arrangement or by the kind of wiring > with arrangements for switching the windings, e.g. with mechanical switches or relays
CPC subdivides this area 5x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
IPC defines codes here since 2006.
Child Classifications
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