Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
G01R 25/00

Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Introduced: September 1968

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

Navigate with arrow keys, Enter to open

  • G01R 25/005 CPC only CPC only
  • G01R 25/02 in circuits having distributed constants IPC+CPC Available in IPC and CPC
  • G01R 25/04 involving adjustment of a phase shifter to produce a predetermined phase difference, e.g. zero difference IPC+CPC Available in IPC and CPC
  • G01R 25/06 employing quotient instrument IPC+CPC Available in IPC and CPC
  • G01R 25/08 by counting of standard pulses since 1974 IPC+CPC Available in IPC and CPC