NL190969B - Current measurement system. - Google Patents
Current measurement system.Info
- Publication number
- NL190969B NL190969B NL7706317A NL7706317A NL190969B NL 190969 B NL190969 B NL 190969B NL 7706317 A NL7706317 A NL 7706317A NL 7706317 A NL7706317 A NL 7706317A NL 190969 B NL190969 B NL 190969B
- Authority
- NL
- Netherlands
- Prior art keywords
- measurement system
- current measurement
- current
- measurement
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
- H02H3/332—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means responsive to dc component in the fault current
-
- 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
- G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
- G01R19/20—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers using transductors, i.e. a magnetic core transducer the saturation of which is cyclically reversed by an AC source on the secondary side
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7706317A NL190969C (en) | 1976-07-13 | 1977-06-08 | Current measurement system. |
BE1008220A BE856056A (en) | 1976-07-13 | 1977-06-23 | CURRENT MEASUREMENT SYSTEM, MORE PARTICULARLY APPLICABLE AS EARTH LAKE DETECTION SYSTEM, AND FUNCTIONAL DEVICE EQUIPPED WITH A SUCH SYSTEM, SUCH AS A GND SWITCH |
GB27220/77A GB1582035A (en) | 1976-07-13 | 1977-06-29 | Current sensing system particularly suitable for use as an earth leakage detection system and functional device equipped with such a system |
SE7707606A SE421352B (en) | 1976-07-13 | 1977-06-30 | POWER METER, SPECIFICALLY EASY AS DETECTOR DEVICE FOR EARTH LICKING |
AU26730/77A AU510539B2 (en) | 1976-06-11 | 1977-07-04 | Earth leakage detection |
AT0482877A AT364018B (en) | 1976-07-13 | 1977-07-06 | CURRENT MEASURING SYSTEM, ESPECIALLY FOR USE AS A FAULT CURRENT DETECTION SYSTEM |
CH844277A CH628441A5 (en) | 1976-07-13 | 1977-07-08 | CURRENT MEASURING CIRCUIT ARRANGEMENT AND USE THEREOF IN A FAULT CURRENT CIRCUIT BREAKER. |
DK310277A DK147215C (en) | 1976-07-13 | 1977-07-08 | POWER GRINDER |
DE2730874A DE2730874C2 (en) | 1976-07-13 | 1977-07-08 | Arrangement for detecting a current |
IT25654/77A IT1077324B (en) | 1976-07-13 | 1977-07-12 | CURRENT MEASUREMENT SYSTEM PARTICULARLY USABLE AS A MASS DISPERSION DETECTION SYSTEM AND FUNCTIONAL DEVICE EQUIPPED WITH A SYSTEM OF THIS TYPE, FOR EXAMPLE A MASS DISPERSION SWITCH |
NO772476A NO148046C (en) | 1976-07-13 | 1977-07-12 | CURRENT MEASURING SYSTEM, SPECIAL TO USE AS AN ERROR CURRENT DETECTION SYSTEM. |
ES460665A ES460665A1 (en) | 1976-07-13 | 1977-07-12 | Current measuring system |
FR7721755A FR2361663A1 (en) | 1976-07-13 | 1977-07-13 | CURRENT MEASURING DEVICE, IN PARTICULAR FOR THE DETECTION OF FAULT CURRENTS |
JP52084021A JPS5945106B2 (en) | 1976-07-13 | 1977-07-13 | Current sensing device particularly suitable for use as a ground leak detection device |
US06/014,089 US4293813A (en) | 1976-07-13 | 1979-02-22 | Current measuring system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7607752A NL185241C (en) | 1976-07-13 | 1976-07-13 | FLOW MEASUREMENT SYSTEM. |
NL7706317A NL190969C (en) | 1976-07-13 | 1977-06-08 | Current measurement system. |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7706317A NL7706317A (en) | 1978-12-12 |
NL190969B true NL190969B (en) | 1994-06-16 |
NL190969C NL190969C (en) | 1994-11-16 |
Family
ID=26645233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7706317A NL190969C (en) | 1976-06-11 | 1977-06-08 | Current measurement system. |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL190969C (en) |
-
1977
- 1977-06-08 NL NL7706317A patent/NL190969C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL190969C (en) | 1994-11-16 |
NL7706317A (en) | 1978-12-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
V1 | Lapsed because of non-payment of the annual fee |
Effective date: 19960101 |