Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural inputs
Patent
1995-06-07
2000-08-01
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural inputs
324107, G01R 2106
Patent
active
060971827
ABSTRACT:
An electronic energy meter for use with a 3-wire delta service having a resistive voltage divider for sensing and scaling the line voltages is disclosed. The resistive voltage divider includes three resistive dividers, one being associated with each phase of the electrical energy being metered. Each resistive divider includes a current limiter for reducing the current into the meter to a safe level when the meter electronics are operating at an elevated level, and a resistor for scaling the line voltage to a predetermined maximum peak-to-peak value. The scaled voltage that is generated has minimal phase shift, and therefore, does not require phase shift compensation prior to processing by a processing system of the electronic meter.
REFERENCES:
patent: 3976941 (1976-08-01), Milkovic
patent: 4007061 (1977-02-01), Le Couturier
patent: 4131844 (1978-12-01), Hucker et al.
patent: 4156273 (1979-05-01), Sato
patent: 4156931 (1979-05-01), Adelman et al.
patent: 4209826 (1980-06-01), Priegnitz
patent: 4355361 (1982-10-01), Riggs et al.
patent: 4389702 (1983-06-01), Clemente et al.
patent: 4438485 (1984-03-01), Voigt
patent: 4497017 (1985-01-01), Davis
patent: 4509128 (1985-04-01), Coppola et al.
patent: 4566060 (1986-01-01), Hoeksma
patent: 4607320 (1986-08-01), Matui et al.
patent: 4622627 (1986-11-01), Rodriguez et al.
patent: 4623960 (1986-11-01), Eng
patent: 4700280 (1987-10-01), Onda et al.
patent: 4761725 (1988-08-01), Henze
patent: 4794369 (1988-12-01), Haferd
patent: 4803632 (1989-02-01), Frew et al.
patent: 4866587 (1989-09-01), Wadlington
patent: 4896106 (1990-01-01), Voisine et al.
patent: 4902964 (1990-02-01), Szabela et al.
patent: 4922399 (1990-05-01), Tsuzki
patent: 4951052 (1990-08-01), Jacob et al.
patent: 4956761 (1990-09-01), Higashi
patent: 4975592 (1990-12-01), Hahn et al.
patent: 4977368 (1990-12-01), Munday et al.
patent: 5019955 (1991-05-01), Hoeksma
patent: 5140511 (1992-08-01), Lee et al.
patent: 5173657 (1992-12-01), Holdsclaw
patent: 5175675 (1992-12-01), Uramoto
patent: 5391983 (1995-02-01), Lisignan et al.
patent: 5457621 (1995-10-01), Munday et al.
Landis & Gyr Instruction/Technical Manual, Solid State Meter Class 20, Form 9S, Bulletin 920, Lafayette, IN, Aug. 4, 1987.
Quad4.RTM. Plus Multifunction Electronic Meter, User's Guide, Document A-117350, Revision L, Process Systems, Charlotte, NC, (month unknown) 1993.
M. Schwendtner, et al., "Elektronicscher Haushaltzahler" Elektrontechnische Zeitschrift etz, vol. 112, No. 6-7, (month unknown) 1991, pp. 320-323, together with an English translation of the same ("Electronic Domestic Meter").
Steven L. Garverick et al., "A Programmable Mixed-Signal ASIC of Power Metering," ISSCC91/Session 2/Low-Temperature Circuits and Special-Purpose Processors/Paper WP 2.4, IEEE International Solid-State Circuits Conference, (month unkown) 1991.
Quantum Multi-Function Polyphase Meter Type SQ400, Preliminary Instruction Manual Draft III, Mar. 1983.
ST-Q101 Series Electronic Meter, Product Bulletin 10253, Schlumberger Industries, (month unknown) 1988.
ST-Q200 Series System Measurement, Product Bulletin 10255, Schlumberger Industries, (month unknown) 1988.
Quantum.TM. Technical Guide, Jul. 1989.
ST-Q200 Series System Measurement, Product Bulletin 10255, Schlumberger Industries, (month unknown) 1990.
Quantum.RTM. Electronic Meter Field Reference Manual For Q101, Q111, Q121 Q200, Q210, Q220 and Q230 Electronic Meters, Schlumberger Industries, prior to Jan. 1991.
ST-MT100Electronic Time-of-Use Instruction Manual 0505, Sangamo Westing, Inc., May 1987.
MT100 Electronic Time-of-Use Register Instruction Manual 0505, Schlumberger Industries, Dec. 1991.
ST-DS130 Recorder Module Product Bulletin 13157, Schlumberger Industries, Sep. 1988.
Hemminger Rodney C.
Munday Mark L.
Schleifer Fred F.
ABB Power T&D Company Inc.
Karlsen Ernest F.
LandOfFree
Electrical energy meter for 3-wire delta service does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical energy meter for 3-wire delta service, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical energy meter for 3-wire delta service will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-667333