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DIFF Subgroup
G01R 27/20

Measuring earth resistance; Measuring contact resistance, of earth connections, e.g. plates

Introduced: September 1968

Title

Titles differ between systems:

IPC: Measuring earth resistance; Measuring contact resistance of earth connections, e.g. plates

CPC: Measuring earth resistance; Measuring contact resistance, of earth connections, e.g. plates

Full Title

Full titles differ between systems:

IPC:

Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom > Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant > Measuring earth resistance; Measuring contact resistance of earth connections, e.g. plates

CPC:

Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom > Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant (by measuring phase angle only G01R25/00) > Measuring earth resistance; Measuring contact resistance, of earth connections, e.g. plates

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

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