GB1018815A - An earth leakage protection circuit - Google Patents

An earth leakage protection circuit

Info

Publication number
GB1018815A
GB1018815A GB44004/62A GB4400462A GB1018815A GB 1018815 A GB1018815 A GB 1018815A GB 44004/62 A GB44004/62 A GB 44004/62A GB 4400462 A GB4400462 A GB 4400462A GB 1018815 A GB1018815 A GB 1018815A
Authority
GB
United Kingdom
Prior art keywords
capacitor
tube
neutral point
rectifiers
nov
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
GB44004/62A
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.)
Individual
Original Assignee
Individual
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 DEK45306A external-priority patent/DE1183167B/en
Application filed by Individual filed Critical Individual
Publication of GB1018815A publication Critical patent/GB1018815A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • 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
    • H02H3/14—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 occurrence of voltage on parts normally at earth potential
    • 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
    • H02H3/162—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 for ac systems
    • H02H3/165—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 for ac systems for three-phase systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

1,018,815. Protective systems. F. KRIWAN. Nov. 21, 1962 [Nov. 28, 1961], No. 44004/62. Heading H2K. An earth leakage protective system comprises a storage capacitor 3 connected between starconnected rectifiers 1 and an artificial neutral point 4 provided by a group of impedances 18, 19, means being provided for using the leakage voltage appearing between a protected apparatus and the neutral point to release the energy stored by the capacitor 3 to operate a protective device. In the arrangement shown, the capacitor 3 is normally charged by current through the rectifiers 1 and a resistor 2 to a potential determined by a glow discharge tube 5. In the event of an earth fault, the voltage appearing between a terminal K connected to the protected apparatus and the neutral point 4 acts through a multiplying circuit 11, 12 to apply an ignition potential to the auxiliary electrode 13 of a glow discharge relay tube 6. The tube 6 ignites and the capacitor 3 discharges through the tube 6 and a trip coil 7 to release the latch 16 of a circuit. breaker 28. A transistor and a Zener diode may be used instead of the tubes 6, 5.
GB44004/62A 1961-11-28 1962-11-21 An earth leakage protection circuit Expired GB1018815A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK45306A DE1183167B (en) 1961-11-28 1961-11-28 Combined residual voltage residual current circuit breaker
DEK0046756 1962-05-16

Publications (1)

Publication Number Publication Date
GB1018815A true GB1018815A (en) 1966-02-02

Family

ID=25983503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44004/62A Expired GB1018815A (en) 1961-11-28 1962-11-21 An earth leakage protection circuit

Country Status (4)

Country Link
BE (1) BE625300A (en)
CH (1) CH409088A (en)
FR (1) FR1339934A (en)
GB (1) GB1018815A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099215A (en) * 1975-01-31 1978-07-04 Jean Parrier Security apparatus for the protection of electric machines
US8964339B2 (en) 2012-03-30 2015-02-24 Yazaki North America, Inc. Faulty protective earth ground circuit detection system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE638540A (en) * 1962-10-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099215A (en) * 1975-01-31 1978-07-04 Jean Parrier Security apparatus for the protection of electric machines
US8964339B2 (en) 2012-03-30 2015-02-24 Yazaki North America, Inc. Faulty protective earth ground circuit detection system and method

Also Published As

Publication number Publication date
CH409088A (en) 1966-03-15
BE625300A (en)
FR1339934A (en) 1963-10-11

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