Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Combined
Patent
1988-05-25
1989-11-28
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Combined
324111, 34087002, G01R 104, G01R 1900, G08C 1900
Patent
active
048840220
ABSTRACT:
A voltage monitoring device is adapted to fit within or be mounted externally of the housing of a standard electricity meter. The device repeatedly monitors the voltage of the mains supply, stores data derived from the measurements for consecutive predetermined periods, and releases the stored data upon request.
REFERENCES:
patent: 3067362 (1962-12-01), Patton
patent: 4082999 (1978-04-01), Staker
patent: 4484290 (1984-11-01), Bagnall et al.
patent: 4558275 (1985-12-01), Borowy et al.
patent: 4672555 (1987-06-01), Hart et al.
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