CA2024242A1 - Battery-powered fault indicator - Google Patents
Battery-powered fault indicatorInfo
- Publication number
- CA2024242A1 CA2024242A1 CA 2024242 CA2024242A CA2024242A1 CA 2024242 A1 CA2024242 A1 CA 2024242A1 CA 2024242 CA2024242 CA 2024242 CA 2024242 A CA2024242 A CA 2024242A CA 2024242 A1 CA2024242 A1 CA 2024242A1
- Authority
- CA
- Canada
- Prior art keywords
- capacitor
- fault
- occurrence
- battery
- conductor
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 abstract 4
- 239000004020 conductor Substances 0.000 abstract 3
- 235000014676 Phragmites communis Nutrition 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
A fault indicator operable from an internal battery for indicating the occurrence of a fault current in a monitored electrical conductor of an AC power distribution system. Upon occurrence of a fault current a reed switch in magnetic communication with the monitored conductor momentarily closes to connect the internal battery to a capacitor, which is charged by the battery during the switch closure. The capacitor is connected to the display electrodes of a high impedance liquid crystal display, which displays an "F" to indicate fault occurrence. The fault indication may be reset either by the slow discharge of the capacitor, by discharging the capacitor through a second reed switch manually actuated by a magnetic reset tool from outside the fault indicator housing, or automatically upon restoration of power in the conductor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43367489A | 1989-11-08 | 1989-11-08 | |
| US433,674 | 1989-11-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2024242A1 true CA2024242A1 (en) | 1991-05-09 |
| CA2024242C CA2024242C (en) | 1998-07-07 |
Family
ID=23721108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002024242A Expired - Fee Related CA2024242C (en) | 1989-11-08 | 1990-08-29 | Battery-powered fault indicator |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2024242C (en) |
-
1990
- 1990-08-29 CA CA002024242A patent/CA2024242C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2024242C (en) | 1998-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2100651A1 (en) | Fault Indicator with Remote Indication | |
| ATE147204T1 (en) | DEVICE FOR MONITORING A BATTERY DURING CHARGING AND DISCHARGING | |
| CA2231106A1 (en) | Condition tester for a battery | |
| CA2039713A1 (en) | Processor controlled circuit breaker trip system having reliable status display | |
| CA2119577A1 (en) | Battery with Electrochemical Tester | |
| US4625201A (en) | Emergency battery cell monitor | |
| CA2024242A1 (en) | Battery-powered fault indicator | |
| US4981764A (en) | Method of providing a indication signal to indicate a level of electrolyte in a wet cell | |
| US4913987A (en) | Universal electrolyte level indicator for wet cell batteries | |
| EP0389784A3 (en) | Electrical shaving apparatus | |
| CA2024205A1 (en) | Fault indicator | |
| CN211348506U (en) | High-voltage capacitor safety discharge detection tool | |
| US4978592A (en) | Universal electrolyte level indicator for wet cell batteries | |
| CN212301673U (en) | Current transformer with testing function | |
| JPH08115751A (en) | Service life indicator and lead-acid battery with service life indicator | |
| CN208890444U (en) | A protection circuit for lithium battery pack | |
| CN211718501U (en) | Polarity test current adding device of current transformer | |
| EP0551199A2 (en) | Electrical insulation and continuity tester | |
| CN218824660U (en) | Voltage transformer on-line monitoring device | |
| CN212033373U (en) | Three-phase four-wire intelligent power plug | |
| CA2028390A1 (en) | Hot line indicator | |
| CN211508221U (en) | Prevent inside electric arc fault's looped netowrk cabinet lower door | |
| CN212965336U (en) | Single-section lithium battery electric quantity detection and display device | |
| CN2313230Y (en) | Insulation discharging detecting instrument | |
| CA2049685A1 (en) | High impedance voltage indicator having capacitive voltage divider |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 20050829 |