responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)

Introduced: September 1968

Title

Titles differ between systems:

IPC: responsive to excess voltage

CPC: responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)

Full Title

Full titles differ between systems:

IPC:

Emergency protective circuit arrangements for limiting excess current or voltage without disconnection > responsive to excess voltage

CPC:

Emergency protective circuit arrangements for limiting excess current or voltage without disconnection > responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)

CPC subdivides this area 8x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

Child Classifications

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H02H 9/041 CPC only CPC only
H02H 9/042 CPC only CPC only
H02H 9/043 CPC only CPC only
H02H 9/044 CPC only CPC only
H02H 9/045 +2 CPC CPC only CPC only
H02H 9/048 CPC only CPC only
H02H 9/049 CPC only CPC only
H02H 9/06 using spark-gap arresters IPC+CPC Available in IPC and CPC