FR839744A - Improvements to devices for protecting personnel against a dangerous increase in the voltage of the casing of an electrical device in relation to the earth - Google Patents

Improvements to devices for protecting personnel against a dangerous increase in the voltage of the casing of an electrical device in relation to the earth

Info

Publication number
FR839744A
FR839744A FR839744DA FR839744A FR 839744 A FR839744 A FR 839744A FR 839744D A FR839744D A FR 839744DA FR 839744 A FR839744 A FR 839744A
Authority
FR
France
Prior art keywords
earth
casing
relation
voltage
devices
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
Other languages
French (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.)
Compagnie Electro Mecanique SA
Original Assignee
Compagnie Electro Mecanique 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 Compagnie Electro Mecanique SA filed Critical Compagnie Electro Mecanique SA
Application granted granted Critical
Publication of FR839744A publication Critical patent/FR839744A/en
Expired 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
FR839744D 1937-12-15 1937-12-15 Improvements to devices for protecting personnel against a dangerous increase in the voltage of the casing of an electrical device in relation to the earth Expired FR839744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR839744T 1937-12-15

Publications (1)

Publication Number Publication Date
FR839744A true FR839744A (en) 1939-04-11

Family

ID=9299679

Family Applications (1)

Application Number Title Priority Date Filing Date
FR839744D Expired FR839744A (en) 1937-12-15 1937-12-15 Improvements to devices for protecting personnel against a dangerous increase in the voltage of the casing of an electrical device in relation to the earth

Country Status (1)

Country Link
FR (1) FR839744A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340433A (en) * 1965-02-15 1967-09-05 Harry G Almquist Safety cut-off for electrical power operated hand tools
FR2504322A1 (en) * 1981-04-15 1982-10-22 Ferraz & Cie Lucien SECURITY SYSTEM AGAINST TENSIONING OF METAL STRUCTURES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340433A (en) * 1965-02-15 1967-09-05 Harry G Almquist Safety cut-off for electrical power operated hand tools
FR2504322A1 (en) * 1981-04-15 1982-10-22 Ferraz & Cie Lucien SECURITY SYSTEM AGAINST TENSIONING OF METAL STRUCTURES
EP0064016A1 (en) * 1981-04-15 1982-11-03 FERRAZ Société Anonyme Protection system against voltage occurrence on metallic structures
US4451866A (en) * 1981-04-15 1984-05-29 Cinquin Jean Pierre Metal structure grounding safety system

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