GB892594A - Improvements in or relating to protective systems for electrical equipment - Google Patents

Improvements in or relating to protective systems for electrical equipment

Info

Publication number
GB892594A
GB892594A GB1964259A GB1964259A GB892594A GB 892594 A GB892594 A GB 892594A GB 1964259 A GB1964259 A GB 1964259A GB 1964259 A GB1964259 A GB 1964259A GB 892594 A GB892594 A GB 892594A
Authority
GB
United Kingdom
Prior art keywords
electrical equipment
relating
protective systems
live
impedance
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
GB1964259A
Inventor
Edgar Pearson
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.)
ASQUITH ELECTRICS COLNE Ltd
Original Assignee
ASQUITH ELECTRICS COLNE Ltd
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 ASQUITH ELECTRICS COLNE Ltd filed Critical ASQUITH ELECTRICS COLNE Ltd
Priority to GB1964259A priority Critical patent/GB892594A/en
Publication of GB892594A publication Critical patent/GB892594A/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

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

892,594. Protective arrangements. ASQUITH ELECTRICS (COLNE) Ltd. May 2, 1960 [June 19, 1959], No. 19642/59. Class 38 (4). Electrical equipment such as a portable hand drill 1 has an impedance M6 introduced into the " live " supply lead L1 so that upon the occurrence of a fault, for example an earth fault indicated at X, the casing of the hand drill 1 does not acquire a dangerous potential. The value of the impedance M6 should be at least six times that of the resistance of either the earth connection E1 or the " live " lead L1.
GB1964259A 1959-06-09 1959-06-09 Improvements in or relating to protective systems for electrical equipment Expired GB892594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1964259A GB892594A (en) 1959-06-09 1959-06-09 Improvements in or relating to protective systems for electrical equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1964259A GB892594A (en) 1959-06-09 1959-06-09 Improvements in or relating to protective systems for electrical equipment

Publications (1)

Publication Number Publication Date
GB892594A true GB892594A (en) 1962-03-28

Family

ID=10132759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1964259A Expired GB892594A (en) 1959-06-09 1959-06-09 Improvements in or relating to protective systems for electrical equipment

Country Status (1)

Country Link
GB (1) GB892594A (en)

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