GB2292490A - Protection against lightning surges on power lines - Google Patents
Protection against lightning surges on power linesInfo
- Publication number
- GB2292490A GB2292490A GB9523216A GB9523216A GB2292490A GB 2292490 A GB2292490 A GB 2292490A GB 9523216 A GB9523216 A GB 9523216A GB 9523216 A GB9523216 A GB 9523216A GB 2292490 A GB2292490 A GB 2292490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inductor
- transient
- voltage
- filter
- impulse
- 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- Withdrawn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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
- H02H9/047—Free-wheeling circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
An arrangement for protecting electrical equipment from the effects of lightning strike-induced surges on power lines is provided in which a protective device (10; 12; 20 or 30) is connected across the inductor (L) of an L/C filter, the device being arranged to remain inactive and present a high impedance to an electrical impulse or transient applied to the filter and to shore circuit the inductor (L) when a voltage polarity reversal on the inductor (L) occurs upon completion of the impulse or transient, so that magnetic energy stored in the inductor (L) during the impulse or transient is subsequently dissipated in the form of heat instead of being passed forward to the protected equipment. The device may comprise or include a bridge rectifier arrangement (12 or 20) either with the inductor (L) located within the rectifier bridge (12) or with a switching device (18) located within the bridge (20) to be triggered by a voltage reversal sensing device (16). Alternatively, the device (10; 30) may include an arrestor (14; 31) and at least one capacitor (C1, C2; 38, 39) adapted to be charged as a result of the transient applied to the filter, and the voltage in the capacitor is added to the post-transient voltage in the inductor (L) of the filter so that the combined voltage causes the arrestor (14; 31) to operate. <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPL881793 | 1993-05-14 | ||
PCT/AU1994/000249 WO1994027350A1 (en) | 1993-05-14 | 1994-05-13 | Protection against lightning surges on power lines |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9523216D0 GB9523216D0 (en) | 1996-01-17 |
GB2292490A true GB2292490A (en) | 1996-02-21 |
Family
ID=3776893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9523216A Withdrawn GB2292490A (en) | 1993-05-14 | 1994-05-13 | Protection against lightning surges on power lines |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4492963T1 (en) |
GB (1) | GB2292490A (en) |
WO (1) | WO1994027350A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5995352A (en) * | 1994-11-29 | 1999-11-30 | Erico Lightning Technologies Pty. Ltd. | Ignition apparatus and method |
CN103078307B (en) * | 2013-01-27 | 2016-02-03 | 黄永捷 | Lightning protection track switch signal indication rectifier |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3660719A (en) * | 1970-08-26 | 1972-05-02 | Texas Instruments Inc | Transient suppression system |
EP0046408A1 (en) * | 1980-08-20 | 1982-02-24 | Power Integrity Corporation | Transient energy control and suppression circuit |
US4328523A (en) * | 1979-12-28 | 1982-05-04 | Home Oil Company Limited | Method and apparatus for the protection of electrical equipment from high voltage transients |
US4434396A (en) * | 1981-11-02 | 1984-02-28 | Montague Herbert R | Power line transient suppression circuit |
FR2563058A1 (en) * | 1984-04-17 | 1985-10-18 | Commissariat Energie Atomique | Device for protecting electrical equipment connected to a low-voltage network from strong electromagnetic pulses, in particular due to lightning |
US4616286A (en) * | 1982-08-02 | 1986-10-07 | Puroflow Corporation | Power line filter |
US4698721A (en) * | 1983-11-07 | 1987-10-06 | Puroflow Corp. | Power line filter for transient and continuous noise suppression |
-
1994
- 1994-05-13 DE DE4492963T patent/DE4492963T1/en not_active Withdrawn
- 1994-05-13 GB GB9523216A patent/GB2292490A/en not_active Withdrawn
- 1994-05-13 WO PCT/AU1994/000249 patent/WO1994027350A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3660719A (en) * | 1970-08-26 | 1972-05-02 | Texas Instruments Inc | Transient suppression system |
US4328523A (en) * | 1979-12-28 | 1982-05-04 | Home Oil Company Limited | Method and apparatus for the protection of electrical equipment from high voltage transients |
EP0046408A1 (en) * | 1980-08-20 | 1982-02-24 | Power Integrity Corporation | Transient energy control and suppression circuit |
US4434396A (en) * | 1981-11-02 | 1984-02-28 | Montague Herbert R | Power line transient suppression circuit |
US4616286A (en) * | 1982-08-02 | 1986-10-07 | Puroflow Corporation | Power line filter |
US4698721A (en) * | 1983-11-07 | 1987-10-06 | Puroflow Corp. | Power line filter for transient and continuous noise suppression |
FR2563058A1 (en) * | 1984-04-17 | 1985-10-18 | Commissariat Energie Atomique | Device for protecting electrical equipment connected to a low-voltage network from strong electromagnetic pulses, in particular due to lightning |
Also Published As
Publication number | Publication date |
---|---|
DE4492963T1 (en) | 1996-12-19 |
WO1994027350A1 (en) | 1994-11-24 |
GB9523216D0 (en) | 1996-01-17 |
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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) |