EP0357343A3 - Method and apparatus for protecting electrical equipment - Google Patents
Method and apparatus for protecting electrical equipment Download PDFInfo
- Publication number
- EP0357343A3 EP0357343A3 EP19890308612 EP89308612A EP0357343A3 EP 0357343 A3 EP0357343 A3 EP 0357343A3 EP 19890308612 EP19890308612 EP 19890308612 EP 89308612 A EP89308612 A EP 89308612A EP 0357343 A3 EP0357343 A3 EP 0357343A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- input signal
- level
- generating
- electromagnetic interference
- protecting electrical
- 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- Withdrawn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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA886541 | 1988-09-02 | ||
ZA886541 | 1988-09-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0357343A2 EP0357343A2 (en) | 1990-03-07 |
EP0357343A3 true EP0357343A3 (en) | 1990-12-27 |
Family
ID=25579401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890308612 Withdrawn EP0357343A3 (en) | 1988-09-02 | 1989-08-24 | Method and apparatus for protecting electrical equipment |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0357343A3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5166661A (en) * | 1991-06-07 | 1992-11-24 | Advance Security Inc. | Automobile alarm system with noise reduction function |
DE102004029360B4 (en) * | 2004-06-17 | 2007-06-21 | Siemens Ag | Device with an operating state and an interruption state |
MY146281A (en) * | 2008-03-17 | 2012-07-31 | Chang Pak Chuen | Electrical interface protecting apparatus |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH105100A (en) * | 1923-04-26 | 1924-06-02 | Oerlikon Maschf | Process and device for the protection of electrical systems against undesired spark and arcing. |
GB1030243A (en) * | 1963-02-01 | 1966-05-18 | Napier & Son Ltd | Means for detecting a fault on an electrical supply system |
GB1119941A (en) * | 1966-08-19 | 1968-07-17 | George Scott Bowman | Protection device |
DE1279512B (en) * | 1967-06-28 | 1968-10-03 | August Woerl | Circuit to prevent false alarms in monitoring systems with electromagnetic fields or sound or ultrasonic fields |
US4206451A (en) * | 1975-11-05 | 1980-06-03 | Honeywell Inc. | Intrusion detection system |
US4466071A (en) * | 1981-09-28 | 1984-08-14 | Texas A&M University System | High impedance fault detection apparatus and method |
-
1989
- 1989-08-24 EP EP19890308612 patent/EP0357343A3/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH105100A (en) * | 1923-04-26 | 1924-06-02 | Oerlikon Maschf | Process and device for the protection of electrical systems against undesired spark and arcing. |
GB1030243A (en) * | 1963-02-01 | 1966-05-18 | Napier & Son Ltd | Means for detecting a fault on an electrical supply system |
GB1119941A (en) * | 1966-08-19 | 1968-07-17 | George Scott Bowman | Protection device |
DE1279512B (en) * | 1967-06-28 | 1968-10-03 | August Woerl | Circuit to prevent false alarms in monitoring systems with electromagnetic fields or sound or ultrasonic fields |
US4206451A (en) * | 1975-11-05 | 1980-06-03 | Honeywell Inc. | Intrusion detection system |
US4466071A (en) * | 1981-09-28 | 1984-08-14 | Texas A&M University System | High impedance fault detection apparatus and method |
Also Published As
Publication number | Publication date |
---|---|
EP0357343A2 (en) | 1990-03-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LAGESSE, RENE BRUNO Inventor name: BOURN, GAVIN WILLIAM Inventor name: GELDENHUYS, HENDRIK JACOBUS |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19910628 |