IT1009180B - Sistema di protezione contro guasto a terra - Google Patents

Sistema di protezione contro guasto a terra

Info

Publication number
IT1009180B
IT1009180B IT67542/74A IT6754274A IT1009180B IT 1009180 B IT1009180 B IT 1009180B IT 67542/74 A IT67542/74 A IT 67542/74A IT 6754274 A IT6754274 A IT 6754274A IT 1009180 B IT1009180 B IT 1009180B
Authority
IT
Italy
Prior art keywords
protection system
earth fault
fault protection
earth
protection
Prior art date
Application number
IT67542/74A
Other languages
English (en)
Italian (it)
Original Assignee
Square D Co
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 Square D Co filed Critical Square D Co
Application granted granted Critical
Publication of IT1009180B publication Critical patent/IT1009180B/it

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
    • H02H3/331—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 responsive to earthing of the neutral conductor
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
IT67542/74A 1973-02-27 1974-03-06 Sistema di protezione contro guasto a terra IT1009180B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB963573A GB1455845A (en) 1973-02-27 1973-02-27 Ground fault protection system

Publications (1)

Publication Number Publication Date
IT1009180B true IT1009180B (it) 1976-12-10

Family

ID=9875805

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67542/74A IT1009180B (it) 1973-02-27 1974-03-06 Sistema di protezione contro guasto a terra

Country Status (5)

Country Link
CA (1) CA1005119A (enrdf_load_stackoverflow)
FR (1) FR2219555B1 (enrdf_load_stackoverflow)
GB (1) GB1455845A (enrdf_load_stackoverflow)
IT (1) IT1009180B (enrdf_load_stackoverflow)
ZA (1) ZA741087B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508979C2 (de) * 1975-03-01 1984-07-12 Günter 4800 Bielefeld Reichensperger Anordnung für einen Schutzschalter mit einer Fehlerstrom-Überwachungseinheit und einer Erdungswiderstand-Überwachungseinheit
US3963963A (en) * 1975-04-22 1976-06-15 Rca Corporation Ground-fault detection system

Also Published As

Publication number Publication date
GB1455845A (en) 1976-11-17
FR2219555A1 (enrdf_load_stackoverflow) 1974-09-20
ZA741087B (en) 1975-01-29
CA1005119A (en) 1977-02-08
FR2219555B1 (enrdf_load_stackoverflow) 1982-03-19

Similar Documents

Publication Publication Date Title
IT1022361B (it) Sistema di protezione contro lostallo per un turbomotore a gas
IT1026981B (it) Struttura incorporante un sistema circolatoric
BR7405098D0 (pt) Sistema para o reforco da terra
IT972223B (it) Spruzzatore per un sistema di spruzzatore per la protezione anti incendio
IT1058828B (it) Gruppo di protezione contro guasto a terra per impianti elettrici
IT1011781B (it) Sistema di comando per motori a impulsi
BR7403230D0 (pt) Sistema hidraulico
AT339680B (de) Absperrorgan
BR7502435A (pt) Meio detector-interruptor de falha de terra
NL7410520A (nl) Bescherming tegen botsing voor kranen.
IT1009251B (it) Macchina per movimenti di terra con dispositivo di sicurezza contro fal se manovre
IT1015024B (it) Sistema di recinzione
DE2355421B2 (de) Ueberspannungsschutzeinrichtung
NL169215C (nl) Bescherminrichting voor een cardanas.
IT971436B (it) Sistema di trasmissione a v
SE395572B (sv) Releskydd
IT1012352B (it) Sistema idraulico
IT990597B (it) Sistema costruttivo a pannelli
IT1009180B (it) Sistema di protezione contro guasto a terra
IT1024350B (it) Complesso di montaggio per dispositivi di movimento di terra
IT1016746B (it) Sistema elettronico modulare
IT1012946B (it) Barriera di sicurezza per strade
SE407876B (sv) Releskydd
NL7413067A (nl) Inrichting ter bescherming tegen stof.
NO146649C (no) Beskyttelseskappe for roerbend.