FR1411984A - Système de protection électrique - Google Patents

Système de protection électrique

Info

Publication number
FR1411984A
FR1411984A FR988266A FR988266A FR1411984A FR 1411984 A FR1411984 A FR 1411984A FR 988266 A FR988266 A FR 988266A FR 988266 A FR988266 A FR 988266A FR 1411984 A FR1411984 A FR 1411984A
Authority
FR
France
Prior art keywords
protection system
electrical protection
electrical
protection
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
FR988266A
Other languages
English (en)
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.)
American District Telegraph Co
Original Assignee
American District Telegraph 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
Priority claimed from US309761A external-priority patent/US3252156A/en
Application filed by American District Telegraph Co filed Critical American District Telegraph Co
Priority to FR988266A priority Critical patent/FR1411984A/fr
Application granted granted Critical
Publication of FR1411984A publication Critical patent/FR1411984A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
FR988266A 1963-09-18 1964-09-16 Système de protection électrique Expired FR1411984A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR988266A FR1411984A (fr) 1963-09-18 1964-09-16 Système de protection électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US309761A US3252156A (en) 1963-09-18 1963-09-18 Alarm annunciator including detection of breaks, grounds, and a break followed by a ground on a monitored line
FR988266A FR1411984A (fr) 1963-09-18 1964-09-16 Système de protection électrique

Publications (1)

Publication Number Publication Date
FR1411984A true FR1411984A (fr) 1965-09-24

Family

ID=26209980

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988266A Expired FR1411984A (fr) 1963-09-18 1964-09-16 Système de protection électrique

Country Status (1)

Country Link
FR (1) FR1411984A (fr)

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