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GB2205459B - Electric current monitoring - Google Patents

Electric current monitoring

Info

Publication number
GB2205459B
GB2205459B GB8812402A GB8812402A GB2205459B GB 2205459 B GB2205459 B GB 2205459B GB 8812402 A GB8812402 A GB 8812402A GB 8812402 A GB8812402 A GB 8812402A GB 2205459 B GB2205459 B GB 2205459B
Authority
GB
United Kingdom
Prior art keywords
electric current
current monitoring
monitoring
electric
current
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
GB8812402A
Other versions
GB2205459A (en
GB8812402D0 (en
Inventor
Geoffrey William Candy
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.)
MIDLAND AUTOMATION Ltd
Original Assignee
MIDLAND AUTOMATION Ltd
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 MIDLAND AUTOMATION Ltd filed Critical MIDLAND AUTOMATION Ltd
Publication of GB8812402D0 publication Critical patent/GB8812402D0/en
Publication of GB2205459A publication Critical patent/GB2205459A/en
Application granted granted Critical
Publication of GB2205459B publication Critical patent/GB2205459B/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
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/12—Measuring rate of change
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
GB8812402A 1987-05-30 1988-05-25 Electric current monitoring Expired - Fee Related GB2205459B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878712740A GB8712740D0 (en) 1987-05-30 1987-05-30 Electrical current monitoring

Publications (3)

Publication Number Publication Date
GB8812402D0 GB8812402D0 (en) 1988-06-29
GB2205459A GB2205459A (en) 1988-12-07
GB2205459B true GB2205459B (en) 1991-06-26

Family

ID=10618174

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878712740A Pending GB8712740D0 (en) 1987-05-30 1987-05-30 Electrical current monitoring
GB8812402A Expired - Fee Related GB2205459B (en) 1987-05-30 1988-05-25 Electric current monitoring

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878712740A Pending GB8712740D0 (en) 1987-05-30 1987-05-30 Electrical current monitoring

Country Status (1)

Country Link
GB (2) GB8712740D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412056A1 (en) * 1989-08-03 1991-02-06 Küpfer, Ewald Electronic safety circuit
DE4027701C1 (en) * 1990-08-31 1991-11-07 Hermann 8000 Muenchen De Kowatsch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894272A (en) * 1974-01-14 1975-07-08 Ransburg Corp Method and apparatus for determining incipient grounding of a high voltage electrostatic system
US4423459A (en) * 1982-04-05 1983-12-27 Siemens-Allis, Inc. Solid state circuit protection system and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894272A (en) * 1974-01-14 1975-07-08 Ransburg Corp Method and apparatus for determining incipient grounding of a high voltage electrostatic system
US4423459A (en) * 1982-04-05 1983-12-27 Siemens-Allis, Inc. Solid state circuit protection system and method

Also Published As

Publication number Publication date
GB2205459A (en) 1988-12-07
GB8812402D0 (en) 1988-06-29
GB8712740D0 (en) 1987-07-01

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Legal Events

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

Effective date: 19950525