CA2049685C - Detecteur de tension a grande impedance avec diviseur de tension capacitif - Google Patents
Detecteur de tension a grande impedance avec diviseur de tension capacitifInfo
- Publication number
- CA2049685C CA2049685C CA 2049685 CA2049685A CA2049685C CA 2049685 C CA2049685 C CA 2049685C CA 2049685 CA2049685 CA 2049685 CA 2049685 A CA2049685 A CA 2049685A CA 2049685 C CA2049685 C CA 2049685C
- Authority
- CA
- Canada
- Prior art keywords
- voltage
- display
- conductor
- indicator
- electrodes
- 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.)
- Expired - Fee Related
Links
- 239000004020 conductor Substances 0.000 claims abstract description 48
- 239000003990 capacitor Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 10
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000005684 electric field Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 239000004988 Nematic liquid crystal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2049685 CA2049685C (fr) | 1991-08-22 | 1991-08-22 | Detecteur de tension a grande impedance avec diviseur de tension capacitif |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2049685 CA2049685C (fr) | 1991-08-22 | 1991-08-22 | Detecteur de tension a grande impedance avec diviseur de tension capacitif |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2049685A1 CA2049685A1 (fr) | 1993-02-23 |
CA2049685C true CA2049685C (fr) | 1999-09-21 |
Family
ID=4148234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2049685 Expired - Fee Related CA2049685C (fr) | 1991-08-22 | 1991-08-22 | Detecteur de tension a grande impedance avec diviseur de tension capacitif |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2049685C (fr) |
-
1991
- 1991-08-22 CA CA 2049685 patent/CA2049685C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2049685A1 (fr) | 1993-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5077520A (en) | High impedance voltage indicator having capacitive voltage divider | |
US5070301A (en) | Fault indicator having liquid crystal status display | |
US5274324A (en) | Hot line mountable hotline indicator having liquid crystal display with resettable memory function | |
US5420502A (en) | Fault indicator with optically-isolated remote readout circuit | |
US6016105A (en) | Fault indicator providing contact closure and light indication on fault detection | |
US4553085A (en) | Coaxial cable tester device | |
US5008651A (en) | Battery-powered fault indicator | |
US4794329A (en) | Cable mounted capacitively-coupled circuit condition indicating device | |
US3991367A (en) | Detection of potential on high-voltage transmission lines | |
US5153565A (en) | Fault indicator having electrostatically-actuated indicator flag | |
CA2265228C (fr) | Indicateur de defauts fournissant la fermeture de contact au moment de la detection de defauts | |
US7746051B1 (en) | Voltmeter with dual displays | |
GB2388723A (en) | Monitoring wiring systems of aircraft | |
US3524178A (en) | Voltage indicator and test device | |
US5363088A (en) | Voltage monitor for alternating current power system | |
US3970932A (en) | Hot line detection system for high voltage switchgear | |
CA2198949C (fr) | Indicateur de defaillance a reinitialisation synchronisee, sensible au courant de defaut | |
US5406195A (en) | Phase-to-phase voltage monitor for three-phase power distribution system | |
US5095265A (en) | Circuit status indicator having liquid crystal display | |
US6998832B1 (en) | High-voltage indicating apparatus and method | |
CA1283721C (fr) | Dispositif servant dans un appareil de detection et de reperage d'informations en rapport avec un evenement | |
CA2049685C (fr) | Detecteur de tension a grande impedance avec diviseur de tension capacitif | |
US3612994A (en) | Cable insulation tester having a liquid immersed annular electrode | |
WO1988000718A1 (fr) | Procede de detection a distance d'un champ electrique | |
US5309499A (en) | Communications line testing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |