FR2439404A1 - Indicateur de surcharge, notamment pour transformateur protege par disjoncteur - Google Patents

Indicateur de surcharge, notamment pour transformateur protege par disjoncteur

Info

Publication number
FR2439404A1
FR2439404A1 FR7829982A FR7829982A FR2439404A1 FR 2439404 A1 FR2439404 A1 FR 2439404A1 FR 7829982 A FR7829982 A FR 7829982A FR 7829982 A FR7829982 A FR 7829982A FR 2439404 A1 FR2439404 A1 FR 2439404A1
Authority
FR
France
Prior art keywords
thermistor
resistance
current transformers
phase transformer
includes current
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
FR7829982A
Other languages
English (en)
Other versions
FR2439404B3 (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.)
Societe Franccaise Gardy SA
Original Assignee
Societe Franccaise Gardy SA
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 Societe Franccaise Gardy SA filed Critical Societe Franccaise Gardy SA
Priority to FR7829982A priority Critical patent/FR2439404A1/fr
Publication of FR2439404A1 publication Critical patent/FR2439404A1/fr
Application granted granted Critical
Publication of FR2439404B3 publication Critical patent/FR2439404B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
    • 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
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'INVENTION CONCERNE LES APPAREILLAGES ELECTRIQUES. ELLE A POUR OBJET UN INDICATEUR DE SURCHARGE, FOURNISSANT UNE INFORMATION LORSQUE LA CHARGE SUR UNE LIGNE ELECTRIQUE 1, 2, 3 DEPASSE UN NIVEAU LEGEREMENT INFERIEUR AU NIVEAU DE DECLENCHEMENT D'UN DISJONCTEUR ASSOCIE. LA CHARGE DE LA LIGNE 1, 2, 3 EST MESUREE AU MOYEN DE THERMISTANCES 21, 22, 23 ALIMENTEES PAR DES TRANSFORMATEURS D'INTENSITE 11, 12, 13. APRES REDRESSEMENT, LA TENSION V RESULTANTE EST APPLIQUEE A UN CIRCUIT A SEUIL 7 SUSCEPTIBLE D'ACTIONNER, AU DEPASSEMENT DE CE SEUIL, UN DISPOSITIF DE SIGNALISATION 6. APPLICATION A LA SURVEILLANCE DE L'ETAT DE CHARGE DES TRANSFORMATEURS DE RESEAU ELECTRIQUE.
FR7829982A 1978-10-20 1978-10-20 Indicateur de surcharge, notamment pour transformateur protege par disjoncteur Granted FR2439404A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7829982A FR2439404A1 (fr) 1978-10-20 1978-10-20 Indicateur de surcharge, notamment pour transformateur protege par disjoncteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7829982A FR2439404A1 (fr) 1978-10-20 1978-10-20 Indicateur de surcharge, notamment pour transformateur protege par disjoncteur

Publications (2)

Publication Number Publication Date
FR2439404A1 true FR2439404A1 (fr) 1980-05-16
FR2439404B3 FR2439404B3 (fr) 1981-07-17

Family

ID=9214001

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829982A Granted FR2439404A1 (fr) 1978-10-20 1978-10-20 Indicateur de surcharge, notamment pour transformateur protege par disjoncteur

Country Status (1)

Country Link
FR (1) FR2439404A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496272A1 (en) * 1980-12-15 1982-06-18 Strasbourg Elec Mains current threshold detecting circuit - uses transformer link to mains wire to detect excess current and operate relay to control meter or warning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496272A1 (en) * 1980-12-15 1982-06-18 Strasbourg Elec Mains current threshold detecting circuit - uses transformer link to mains wire to detect excess current and operate relay to control meter or warning device

Also Published As

Publication number Publication date
FR2439404B3 (fr) 1981-07-17

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