FR2428931A1 - Detector for power line breaks - uses two or three winding reed relay with associated rectifying diodes - Google Patents
Detector for power line breaks - uses two or three winding reed relay with associated rectifying diodesInfo
- Publication number
- FR2428931A1 FR2428931A1 FR7817583A FR7817583A FR2428931A1 FR 2428931 A1 FR2428931 A1 FR 2428931A1 FR 7817583 A FR7817583 A FR 7817583A FR 7817583 A FR7817583 A FR 7817583A FR 2428931 A1 FR2428931 A1 FR 2428931A1
- Authority
- FR
- France
- Prior art keywords
- relay
- rectifying diodes
- detector
- power line
- reed relay
- 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.)
- Pending
Links
Classifications
-
- 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
- G01R31/54—Testing for continuity
-
- 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
-
- 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)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The detection of breaks in electrical conductors is by measurement of the characteristics of the current in the current in the conductor. The detection is based on the use of a reed relay (N-M) with two or three separate coils wound together (L1, L2, L3). Two such coils (L1, L2) are fed in opposition via rectifying diodes (D1, D2) from the line voltage (E) such that there is normally a positive or relay closed field around the relay. The two windings are finally commoned (S) and taken into the load circuit. A further coil (L3) can be included, this having short circuited terminals ensuring that the relay electrodes normally remain closed. High power lines can be accommodated by use of a suitable low power transformer about 0-2VA at the detector input.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7817583A FR2428931A1 (en) | 1978-06-13 | 1978-06-13 | Detector for power line breaks - uses two or three winding reed relay with associated rectifying diodes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7817583A FR2428931A1 (en) | 1978-06-13 | 1978-06-13 | Detector for power line breaks - uses two or three winding reed relay with associated rectifying diodes |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2428931A1 true FR2428931A1 (en) | 1980-01-11 |
Family
ID=9209409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7817583A Pending FR2428931A1 (en) | 1978-06-13 | 1978-06-13 | Detector for power line breaks - uses two or three winding reed relay with associated rectifying diodes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2428931A1 (en) |
-
1978
- 1978-06-13 FR FR7817583A patent/FR2428931A1/en active Pending
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