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 networksInfo
- 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- Withdrawn
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>
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0093622A1 (en) * | 1982-05-05 | 1983-11-09 | Dorman Smith Switchgear Limited | Short circuit current protection |
-
1979
- 1979-01-04 GB GB8102760A patent/GB2068568A/en not_active Withdrawn
Cited By (2)
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) |