FR2267646A1 - Electronic protection circuit against electric shock - has transistor fed contactor coil switched by earth current level - Google Patents

Electronic protection circuit against electric shock - has transistor fed contactor coil switched by earth current level

Info

Publication number
FR2267646A1
FR2267646A1 FR7412600A FR7412600A FR2267646A1 FR 2267646 A1 FR2267646 A1 FR 2267646A1 FR 7412600 A FR7412600 A FR 7412600A FR 7412600 A FR7412600 A FR 7412600A FR 2267646 A1 FR2267646 A1 FR 2267646A1
Authority
FR
France
Prior art keywords
protection circuit
current level
electric shock
contactor coil
against electric
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.)
Granted
Application number
FR7412600A
Other languages
English (en)
Other versions
FR2267646B3 (fr
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.)
SATYANARYANA VARAHUR
Original Assignee
SATYANARYANA VARAHUR
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 SATYANARYANA VARAHUR filed Critical SATYANARYANA VARAHUR
Publication of FR2267646A1 publication Critical patent/FR2267646A1/fr
Application granted granted Critical
Publication of FR2267646B3 publication Critical patent/FR2267646B3/fr
Granted 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
    • H02H3/14—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
    • H02H3/167—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 combined with other earth-fault protective arrangements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)
FR7412600A 1974-04-13 1974-04-10 Electronic protection circuit against electric shock - has transistor fed contactor coil switched by earth current level Granted FR2267646A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742418073 DE2418073A1 (de) 1974-04-13 1974-04-13 Vorrichtung zum trennen einer elektrischen last von einer strom- oder spannungsquelle

Publications (2)

Publication Number Publication Date
FR2267646A1 true FR2267646A1 (en) 1975-11-07
FR2267646B3 FR2267646B3 (fr) 1977-02-11

Family

ID=5912907

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7412600A Granted FR2267646A1 (en) 1974-04-13 1974-04-10 Electronic protection circuit against electric shock - has transistor fed contactor coil switched by earth current level

Country Status (2)

Country Link
DE (1) DE2418073A1 (fr)
FR (1) FR2267646A1 (fr)

Also Published As

Publication number Publication date
FR2267646B3 (fr) 1977-02-11
DE2418073A1 (de) 1975-10-30

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Legal Events

Date Code Title Description
ST Notification of lapse