NL190969C - Current measurement system. - Google Patents

Current measurement system.

Info

Publication number
NL190969C
NL190969C NL7706317A NL7706317A NL190969C NL 190969 C NL190969 C NL 190969C NL 7706317 A NL7706317 A NL 7706317A NL 7706317 A NL7706317 A NL 7706317A NL 190969 C NL190969 C NL 190969C
Authority
NL
Netherlands
Prior art keywords
measurement system
current measurement
current
measurement
Prior art date
Application number
NL7706317A
Other languages
Dutch (nl)
Other versions
NL7706317A (en
NL190969B (en
Original Assignee
Hazemeijer Bv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from NL7607752A external-priority patent/NL185241C/en
Application filed by Hazemeijer Bv filed Critical Hazemeijer Bv
Priority to NL7706317A priority Critical patent/NL190969C/en
Priority to BE1008220A priority patent/BE856056A/en
Priority to GB27220/77A priority patent/GB1582035A/en
Priority to SE7707606A priority patent/SE421352B/en
Priority to AU26730/77A priority patent/AU510539B2/en
Priority to AT0482877A priority patent/AT364018B/en
Priority to DK310277A priority patent/DK147215C/en
Priority to CH844277A priority patent/CH628441A5/en
Priority to DE2730874A priority patent/DE2730874C2/en
Priority to NO772476A priority patent/NO148046C/en
Priority to IT25654/77A priority patent/IT1077324B/en
Priority to ES460665A priority patent/ES460665A1/en
Priority to JP52084021A priority patent/JPS5945106B2/en
Priority to FR7721755A priority patent/FR2361663A1/en
Publication of NL7706317A publication Critical patent/NL7706317A/en
Priority to US06/014,089 priority patent/US4293813A/en
Publication of NL190969B publication Critical patent/NL190969B/en
Publication of NL190969C publication Critical patent/NL190969C/en
Application granted granted Critical

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)
NL7706317A 1976-06-11 1977-06-08 Current measurement system. NL190969C (en)

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
DE2730874A DE2730874C2 (en) 1976-07-13 1977-07-08 Arrangement for detecting a current
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
NO772476A NO148046C (en) 1976-07-13 1977-07-12 CURRENT MEASURING SYSTEM, SPECIAL TO USE AS AN ERROR CURRENT DETECTION SYSTEM.
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
ES460665A ES460665A1 (en) 1976-07-13 1977-07-12 Current measuring system
JP52084021A JPS5945106B2 (en) 1976-07-13 1977-07-13 Current sensing device particularly suitable for use as a ground leak detection device
FR7721755A FR2361663A1 (en) 1976-07-13 1977-07-13 CURRENT MEASURING DEVICE, IN PARTICULAR FOR THE DETECTION OF FAULT CURRENTS
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 NL190969B (en) 1994-06-16
NL190969C true 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)

Also Published As

Publication number Publication date
NL7706317A (en) 1978-12-12
NL190969B (en) 1994-06-16

Similar Documents

Publication Publication Date Title
NL7709279A (en) IMAGE-SHAPING SYSTEM.
NL7703580A (en) IMAGE-SHAPING SYSTEM.
NO774268L (en) DETECTION SYSTEM.
NL7707689A (en) ELECTRODE SYSTEM.
NL7703581A (en) IMAGE-SHAPING SYSTEM.
SE7713247L (en) MULTIPUM POINT ASSEMBLY SYSTEM
NO774527L (en) TEST TAMPONG.
NL183969C (en) ELECTRICAL CONNECTION SYSTEM.
NL7706464A (en) FACSIMIL SYSTEM.
NL7713485A (en) CHARACTERISTIC DETECTION SYSTEM.
DK310277A (en) STROMMALES SYSTEM
NO772894L (en) ELECTRICAL CONNECTION.
NO770367L (en) ELECTRIC COMBULATORS.
NL7711885A (en) CATHODY SYSTEM.
NL7709836A (en) IMAGING SYSTEM.
NL7713339A (en) SUBSTITUTED HOT-FULVALS.
NO774182L (en) DETECTOR.
NL7702391A (en) SCALE.
NL7701029A (en) ELECTRICAL CONNECTION SYSTEM.
NL7710265A (en) ANGLE CURRENT.
NL7703444A (en) FIBRINOGENIC ENZYMAL SYSTEM.
NL7701006A (en) WEIGHING SYSTEM.
NL7703534A (en) ACOUSTIC MEASUREMENT SYSTEM.
NL186123C (en) ROENGEN DETECTOR.
NO773019L (en) MULTI-APPARATUS SYSTEM.

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