WO1998059251A3 - Method and apparatus for indicating an alternating voltage - Google Patents

Method and apparatus for indicating an alternating voltage Download PDF

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Publication number
WO1998059251A3
WO1998059251A3 PCT/FI1998/000507 FI9800507W WO9859251A3 WO 1998059251 A3 WO1998059251 A3 WO 1998059251A3 FI 9800507 W FI9800507 W FI 9800507W WO 9859251 A3 WO9859251 A3 WO 9859251A3
Authority
WO
WIPO (PCT)
Prior art keywords
alternating voltage
alternating
electric field
resonant circuit
indicating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/FI1998/000507
Other languages
French (fr)
Other versions
WO1998059251A2 (en
Inventor
Joakim Skogberg
Toivo Ridal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Oyj
Original Assignee
Nokia Telecommunications Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Priority to EP98925671A priority Critical patent/EP0988557A2/en
Priority to AU77694/98A priority patent/AU7769498A/en
Publication of WO1998059251A2 publication Critical patent/WO1998059251A2/en
Publication of WO1998059251A3 publication Critical patent/WO1998059251A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/155—Indicating the presence of voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The invention pertains to an alternating voltage indicator placed next to an electrical conductor. Indication is based on the detection of an electric field around a live conductor. Energy is taken capacitively (100) from an alternating electric field in order to bring a resonant circuit (200) tuned to the frequency of the alternating voltage into oscillating state. The voltage of the resonant circuit (200) is amplified (300) and converted into an on/off type (400) signal indicating the presence of an alternating voltage. The indicator according to the invention is electrically safe and it indicates the presence of an alternating voltage regardless of whether the alternating voltage source is loaded at that particular point or not.
PCT/FI1998/000507 1997-06-13 1998-06-12 Method and apparatus for indicating an alternating voltage Ceased WO1998059251A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98925671A EP0988557A2 (en) 1997-06-13 1998-06-12 Method and apparatus for indicating an alternating voltage
AU77694/98A AU7769498A (en) 1997-06-13 1998-06-12 Method and apparatus for indicating an alternating voltage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI972513A FI102643B (en) 1997-06-13 1997-06-13 Method and apparatus for detecting alternating voltage
FI972513 1997-06-13

Publications (2)

Publication Number Publication Date
WO1998059251A2 WO1998059251A2 (en) 1998-12-30
WO1998059251A3 true WO1998059251A3 (en) 1999-03-18

Family

ID=8549044

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1998/000507 Ceased WO1998059251A2 (en) 1997-06-13 1998-06-12 Method and apparatus for indicating an alternating voltage

Country Status (5)

Country Link
EP (1) EP0988557A2 (en)
CN (1) CN1260880A (en)
AU (1) AU7769498A (en)
FI (1) FI102643B (en)
WO (1) WO1998059251A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2300775C1 (en) * 2005-12-20 2007-06-10 Общество с ограниченной ответственностью "ЭкоПром" Light-sound indicator of low voltage
FI124896B (en) * 2012-09-04 2015-03-13 Eltel Networks Oy Remote voltage detector in a power grid and voltage detection method
CN113358912B (en) * 2021-06-11 2022-03-08 南方电网数字电网研究院有限公司 Voltage measuring device, voltage measuring method, and storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814488A1 (en) * 1978-03-31 1979-10-11 Bernd Kuehne HV alarm device for construction workers - uses semiconductor field detector coupled to fail=safe audible warning unit
DE2849529A1 (en) * 1978-11-15 1980-05-29 Ipa Anstalt SINGLE-POLE VOLTAGE DETECTOR
GB2049205A (en) * 1979-05-17 1980-12-17 Medine H Electric potential detector
US4719415A (en) * 1984-05-24 1988-01-12 Mitec Moderne Industrietechnik Gmbh Arrangement for the measurement of the electric voltage parameters of a high voltage conductor
US5274324A (en) * 1989-11-08 1993-12-28 Schweitzer Edmund O Jun Hot line mountable hotline indicator having liquid crystal display with resettable memory function

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814488A1 (en) * 1978-03-31 1979-10-11 Bernd Kuehne HV alarm device for construction workers - uses semiconductor field detector coupled to fail=safe audible warning unit
DE2849529A1 (en) * 1978-11-15 1980-05-29 Ipa Anstalt SINGLE-POLE VOLTAGE DETECTOR
GB2049205A (en) * 1979-05-17 1980-12-17 Medine H Electric potential detector
US4719415A (en) * 1984-05-24 1988-01-12 Mitec Moderne Industrietechnik Gmbh Arrangement for the measurement of the electric voltage parameters of a high voltage conductor
US5274324A (en) * 1989-11-08 1993-12-28 Schweitzer Edmund O Jun Hot line mountable hotline indicator having liquid crystal display with resettable memory function

Also Published As

Publication number Publication date
FI972513A0 (en) 1997-06-13
EP0988557A2 (en) 2000-03-29
WO1998059251A2 (en) 1998-12-30
CN1260880A (en) 2000-07-19
FI102643B1 (en) 1999-01-15
FI102643B (en) 1999-01-15
AU7769498A (en) 1999-01-04

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