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GB2372821B - Testing of electrical apparatus - Google Patents

Testing of electrical apparatus

Info

Publication number
GB2372821B
GB2372821B GB0126784A GB0126784A GB2372821B GB 2372821 B GB2372821 B GB 2372821B GB 0126784 A GB0126784 A GB 0126784A GB 0126784 A GB0126784 A GB 0126784A GB 2372821 B GB2372821 B GB 2372821B
Authority
GB
United Kingdom
Prior art keywords
testing
electrical apparatus
electrical
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.)
Expired - Fee Related
Application number
GB0126784A
Other versions
GB0126784D0 (en
GB2372821A (en
Inventor
Paul Simon Wright
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.)
UK Secretary of State for Trade and Industry
Original Assignee
UK Secretary of State for Trade and Industry
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 UK Secretary of State for Trade and Industry filed Critical UK Secretary of State for Trade and Industry
Publication of GB0126784D0 publication Critical patent/GB0126784D0/en
Publication of GB2372821A publication Critical patent/GB2372821A/en
Application granted granted Critical
Publication of GB2372821B publication Critical patent/GB2372821B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/20—Measurement of non-linear distortion

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB0126784A 2000-11-10 2001-11-07 Testing of electrical apparatus Expired - Fee Related GB2372821B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0027556A GB0027556D0 (en) 2000-11-10 2000-11-10 Testing of electrical apparatus

Publications (3)

Publication Number Publication Date
GB0126784D0 GB0126784D0 (en) 2002-01-02
GB2372821A GB2372821A (en) 2002-09-04
GB2372821B true GB2372821B (en) 2004-09-08

Family

ID=9902986

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0027556A Ceased GB0027556D0 (en) 2000-11-10 2000-11-10 Testing of electrical apparatus
GB0126784A Expired - Fee Related GB2372821B (en) 2000-11-10 2001-11-07 Testing of electrical apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0027556A Ceased GB0027556D0 (en) 2000-11-10 2000-11-10 Testing of electrical apparatus

Country Status (1)

Country Link
GB (2) GB0027556D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI602372B (en) 2014-06-25 2017-10-11 易家居聯網科技有限公司 Electric appliance monitor method and electric appliance monitor system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031462A (en) * 1975-07-07 1977-06-21 Motorola, Inc. Frequency spectrum analyzer
US4301404A (en) * 1979-02-09 1981-11-17 Solartron Electronic Group Limited Methods and apparatus for analyzing periodic waveforms
US4630229A (en) * 1982-02-23 1986-12-16 Intercontrole Societe Anonyme Circuit for the fast calculation of the discrete Fourier transform of a signal
US4964055A (en) * 1987-11-25 1990-10-16 Cooper Industries, Inc. Hand-held power system harmonic distortion meter with selective activation of display
US5365164A (en) * 1992-08-24 1994-11-15 Tci (Trans-Coil, Inc.) Harmonic analyzer and methods of constructing and utilizing same
GB2281629A (en) * 1993-07-30 1995-03-08 Polymeters Response Internatio Measuring distortion in ac networks
US5973501A (en) * 1993-10-18 1999-10-26 Metropolitan Industries, Inc. Current and voltage probe for measuring harmonic distortion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031462A (en) * 1975-07-07 1977-06-21 Motorola, Inc. Frequency spectrum analyzer
US4301404A (en) * 1979-02-09 1981-11-17 Solartron Electronic Group Limited Methods and apparatus for analyzing periodic waveforms
US4630229A (en) * 1982-02-23 1986-12-16 Intercontrole Societe Anonyme Circuit for the fast calculation of the discrete Fourier transform of a signal
US4964055A (en) * 1987-11-25 1990-10-16 Cooper Industries, Inc. Hand-held power system harmonic distortion meter with selective activation of display
US5365164A (en) * 1992-08-24 1994-11-15 Tci (Trans-Coil, Inc.) Harmonic analyzer and methods of constructing and utilizing same
GB2281629A (en) * 1993-07-30 1995-03-08 Polymeters Response Internatio Measuring distortion in ac networks
US5973501A (en) * 1993-10-18 1999-10-26 Metropolitan Industries, Inc. Current and voltage probe for measuring harmonic distortion

Also Published As

Publication number Publication date
GB0126784D0 (en) 2002-01-02
GB0027556D0 (en) 2000-12-27
GB2372821A (en) 2002-09-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20091107