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GB2068568A - Measuring device for one-, two and three-phase short-circuit currents on low-voltage networks - Google Patents

Measuring device for one-, two and three-phase short-circuit currents on low-voltage networks

Info

Publication number
GB2068568A
GB2068568A GB8102760A GB8102760A GB2068568A GB 2068568 A GB2068568 A GB 2068568A GB 8102760 A GB8102760 A GB 8102760A GB 8102760 A GB8102760 A GB 8102760A GB 2068568 A GB2068568 A GB 2068568A
Authority
GB
United Kingdom
Prior art keywords
low
circuit currents
measuring device
voltage networks
phase short
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.)
Withdrawn
Application number
GB8102760A
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.)
Electricite Neuchateloise SA
Original Assignee
Electricite Neuchateloise SA
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
Priority claimed from CH76678A external-priority patent/CH619543A5/fr
Application filed by Electricite Neuchateloise SA filed Critical Electricite Neuchateloise SA
Publication of GB2068568A publication Critical patent/GB2068568A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

This apparatus enables the direct measurement of short-circuit currents up to 20,000 amps on low voltage networks and in interior installations. It consists of an input circuit (Rm, Rc) an electronic commutator (7), a control means (5, 8) for initiating the measurement, a device (1) for integrating voltage and supplying its value in digital form to a computer (2) a display device (3) and a commutator (9) for selecting the value to be displayed. <IMAGE>
GB8102760A 1978-01-25 1979-01-04 Measuring device for one-, two and three-phase short-circuit currents on low-voltage networks Withdrawn GB2068568A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH76678A CH619543A5 (en) 1978-01-25 1978-01-25
EP19790900113 EP0009486A1 (en) 1978-01-25 1979-08-28 Apparatus for measuring mono-, bi- and tripolar short-circuit currents on low voltage net works

Publications (1)

Publication Number Publication Date
GB2068568A true GB2068568A (en) 1981-08-12

Family

ID=25685616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8102760A Withdrawn GB2068568A (en) 1978-01-25 1979-01-04 Measuring device for one-, two and three-phase short-circuit currents on low-voltage networks

Country Status (1)

Country Link
GB (1) GB2068568A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093622A1 (en) * 1982-05-05 1983-11-09 Dorman Smith Switchgear Limited Short circuit current protection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093622A1 (en) * 1982-05-05 1983-11-09 Dorman Smith Switchgear Limited Short circuit current protection
US4589073A (en) * 1982-05-05 1986-05-13 Dorman Smith Switchgear Limited Apparatus for determining prospective short circuit current

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)