Instrument to measure the errors of apparent power meters
CA 1302500 C · Owner: Arseneau, Rejean J. · Inventors: Filipski, Piotr S.; Arseneau, Rejean J.; Zelle, John J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, INSTRUMENT TO MEASURE THE ERRORS OF APPARENT POWER METERS, INVENTORS, Réjean J. Arseneau Piotr S. Filipski, John J. Zelle, ABSTRACT OF THE DISCLOSURE An instrument to determine, under actual field conditions, which type of VA demand meters are most appropriate for a particular consumer. The type of electrical load that the consumer places on an electrical supply system can introduce harmonics and phase distortion in the system resulting in VA meters producing incorrect readings. These VA meters are intended to measure the true apparent power S which is defined as S = Vrms X Irms but are, generally designed to operate according to one of the following approximate formula:, (1) S' = …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.