G - Physics – 01 – R
Patent
G - Physics
01
R
324/74
G01R 21/07 (2006.01)
Patent
CA 1044327
Abstract of the Disclosure Magnetic sections of an induction watthour meter include metering coils for connection as elements of a terminating impedance network for power line carrier communi- cation signals. Stator cores of the magnetic sections are made of a ferrite magnetic material so that the metering coils can have predetermined high frequency resonant circuit characteristics. The terminating impedance networks are integral to the watthour metering circuit to provide high impedances for terminating the communication signal to reduce undesired effects on the signals due to low impedance customer electric loads and wide variations in the loads. An alter- native embodiment includes a terminating impedance network connected in a watthour metering circuit in which a low impedance circuit protects against interfering high frequency signals originating at a customer's premises.
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