by pole-changing

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Arrangements for starting electric motors or dynamo-electric converters > for starting dynamo-electric motors or dynamo-electric converters > for starting an individual synchronous motor > by pole-changing

CPC:

Arrangements for starting electric motors or dynamo-electric converters (starting of synchronous motors with electronic commutators H02P6/20, H02P6/22; starting dynamo-electric motors rotating step by step H02P8/04; vector control H02P21/00) > for starting dynamo-electric motors or dynamo-electric converters > for starting an individual synchronous motor > by pole-changing

No child classifications to compare. This is a leaf node in both IPC and CPC.