JPS47010295A - - Google Patents
Info
- Publication number
- JPS47010295A JPS47010295A JP8938471A JP8938471A JPS47010295A JP S47010295 A JPS47010295 A JP S47010295A JP 8938471 A JP8938471 A JP 8938471A JP 8938471 A JP8938471 A JP 8938471A JP S47010295 A JPS47010295 A JP S47010295A
- Authority
- JP
- Japan
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
- H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measurement Of Current Or Voltage (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Emergency Alarm Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8836270A | 1970-11-10 | 1970-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS47010295A true JPS47010295A (enExample) | 1972-05-24 |
Family
ID=22210936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8938471A Pending JPS47010295A (enExample) | 1970-11-10 | 1971-11-09 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3784903A (enExample) |
| JP (1) | JPS47010295A (enExample) |
| DE (1) | DE2153341C3 (enExample) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025850A (en) * | 1975-10-01 | 1977-05-24 | Joseph Spiteri | Passive, solid state wide range voltage checker |
| AU505689B2 (en) * | 1976-02-10 | 1979-11-29 | Email Limited | Current operated core balance protective test unit |
| US4052664A (en) * | 1976-05-13 | 1977-10-04 | Leonard Buster Pohl | Circuit monitor to determine power on and circuit working |
| US4292585A (en) * | 1979-01-17 | 1981-09-29 | Charette George F | Leakage current testing circuit |
| US5005007A (en) * | 1990-05-10 | 1991-04-02 | Yu Li Enterprise Co. Ltd. | Alarm device for marine tank |
| US10288662B2 (en) | 2016-04-05 | 2019-05-14 | Shock Alert Llc | Shock detector |
| US9799193B2 (en) | 2012-08-28 | 2017-10-24 | Birch Tree Llc | Shock detector systems |
| CN104704539B (zh) | 2012-08-28 | 2017-07-07 | 伯奇特里有限责任公司 | 电击检测器 |
| US9506957B1 (en) | 2014-08-05 | 2016-11-29 | Aaron Neal Branstetter | Floating apparatus for alerting people of the presence of voltage in water |
| US9959734B1 (en) | 2017-04-24 | 2018-05-01 | John Figura | Predictive shock alert warning system for use in bodies of water |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR878802A (fr) * | 1941-09-18 | 1943-02-04 | Comp Generale Electricite | Dispositif de compensation pour appareil de mesure de grandeurs électriques avec redresseur à résistance variable |
| US2806993A (en) * | 1953-06-22 | 1957-09-17 | Edward J Matousek | Tool tester |
| US3066284A (en) * | 1957-10-14 | 1962-11-27 | Ca Nat Research Council | Dynamic ground detectors |
| US3141128A (en) * | 1961-06-26 | 1964-07-14 | Samuel H Behr | Apparatus for testing portable equipment for a. c. and d. c. leakage and for ground continuity |
| US3263164A (en) * | 1961-10-10 | 1966-07-26 | Louis G Solgere | Electrical ground and polarity tester with thermally controlled switch means |
| US3205436A (en) * | 1962-02-02 | 1965-09-07 | Thomas M Donahue | Method and apparatus for measuring impedance increases in the ground or protective ground wires leading to three-wire prong power receptacles |
| US3281689A (en) * | 1962-03-26 | 1966-10-25 | Expando Meter Company | R. m. s. meter circuit using linear resistors and voltage biased diodes to approximate the square law characteristic |
| US3356939A (en) * | 1964-03-25 | 1967-12-05 | Fed Pacific Electric Co | Ground leakage detection apparatus for ungrounded systems including toroidal core detector means |
| US3345562A (en) * | 1964-08-03 | 1967-10-03 | Crosley Broadcasting Corp | Ac-dc meter |
| US3426274A (en) * | 1964-11-19 | 1969-02-04 | Western Reserve Electronics In | Diode bridge protection circuits for electrical measuring instruments employing the diode forward drop threshold voltage |
| US3376502A (en) * | 1965-06-18 | 1968-04-02 | Frederick J. Rink | Apparatus having standard impedance calibration means for testing the impedance of an electrical ground and including polarity reversing switch means |
| US3368146A (en) * | 1966-05-25 | 1968-02-06 | John E. Regan | Electrical safety tester having a plurality of switches for setting up tests |
| US3510766A (en) * | 1968-02-01 | 1970-05-05 | Saftematic Inc | Probe device having a pair of aligned tubular sections for detecting electric leakage |
-
1970
- 1970-11-10 US US00088362A patent/US3784903A/en not_active Expired - Lifetime
-
1971
- 1971-10-26 DE DE2153341A patent/DE2153341C3/de not_active Expired
- 1971-11-09 JP JP8938471A patent/JPS47010295A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2153341B2 (de) | 1973-12-06 |
| DE2153341C3 (de) | 1974-07-11 |
| US3784903A (en) | 1974-01-08 |
| DE2153341A1 (de) | 1972-05-18 |