CA944434A - Earth fault detection circuitry - Google Patents

Earth fault detection circuitry

Info

Publication number
CA944434A
CA944434A CA049,336A CA49336A CA944434A CA 944434 A CA944434 A CA 944434A CA 49336 A CA49336 A CA 49336A CA 944434 A CA944434 A CA 944434A
Authority
CA
Canada
Prior art keywords
fault detection
detection circuitry
earth fault
earth
circuitry
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
Application number
CA049,336A
Other languages
English (en)
Inventor
Ivo Puljar-Matic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BBC Brown Boveri AG Switzerland
Original Assignee
Brown Boveri und Cie AG Switzerland
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
Application filed by Brown Boveri und Cie AG Switzerland filed Critical Brown Boveri und Cie AG Switzerland
Application granted granted Critical
Publication of CA944434A publication Critical patent/CA944434A/en
Expired legal-status Critical Current

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
    • H02H3/16—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 fault current to earth, frame or mass
    • H02H3/17—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 fault current to earth, frame or mass by means of an auxiliary voltage injected into the installation to be protected
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G01R27/18—Measuring resistance to earth, i.e. line to ground

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
CA049,336A 1968-04-22 1969-04-21 Earth fault detection circuitry Expired CA944434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH590368A CH482332A (de) 1968-04-22 1968-04-22 Erdschlussschutzeinrichtung für ein Gleichstromnetz

Publications (1)

Publication Number Publication Date
CA944434A true CA944434A (en) 1974-03-26

Family

ID=4301273

Family Applications (1)

Application Number Title Priority Date Filing Date
CA049,336A Expired CA944434A (en) 1968-04-22 1969-04-21 Earth fault detection circuitry

Country Status (8)

Country Link
BE (1) BE731830A (2)
CA (1) CA944434A (2)
CH (1) CH482332A (2)
DE (1) DE1918734A1 (2)
FR (1) FR2006691A1 (2)
GB (1) GB1270129A (2)
NL (2) NL6906108A (2)
NO (1) NO129433B (2)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2168253C1 (ru) * 2000-03-02 2001-05-27 Южно-Российский государственный технический университет (Новочеркасский политехнический институт) Устройство защиты от замыкания на землю электроустановки постоянного тока
CN110286334A (zh) * 2019-06-25 2019-09-27 哈尔滨锐驰风力发电有限责任公司 一种直流电源模拟接地测试装置
CN114353607B (zh) * 2022-01-19 2023-06-20 北京伊拜科技有限责任公司 无线雷管起爆网路的检测控制方法

Also Published As

Publication number Publication date
GB1270129A (en) 1972-04-12
NO129433B (2) 1974-04-08
NL6906108A (2) 1969-10-24
DE1918734A1 (de) 1969-11-06
CH482332A (de) 1969-11-30
FR2006691A1 (2) 1970-01-02
BE731830A (2) 1969-10-01
NL7512127A (nl) 1976-03-31

Similar Documents

Publication Publication Date Title
ZA708139B (en) Ground fault sensing circuit
CA938510A (en) Leak detector
CA938674A (en) Ground fault detector
AU449169B2 (en) Leak detector
CA918603A (en) Leak detector
CA944434A (en) Earth fault detection circuitry
AU2821671A (en) Fault detection circuits
CA923598A (en) Fail-safe voltage level detector
CA981784A (en) Ground fault detection system
AU443610B2 (en) Ground fault sensing circuit
AU2344070A (en) Ground fault sensing circuit
CA776865A (en) Sequence detection circuit
CA790183A (en) Sequence detection circuit
CA795481A (en) Object detection devices
CA794520A (en) Object detection devices
CA727247A (en) Earth fault detector
CA780050A (en) Fault indicator
AU437268B2 (en) An improved earth excavator
CA916277A (en) Ground fault sensing circuit
CA796425A (en) Pulse width detection circuit
CA790218A (en) Primary element for level detection
CA786993A (en) Primary element for level detection
AU4707968A (en) An improved cribbing unit
AU423973B2 (en) Recovery
CA802416A (en) Detector circuits