GB444399A - Improvements in and relating to fault detecting and cutting out systems for electricsupply circuits - Google Patents

Improvements in and relating to fault detecting and cutting out systems for electricsupply circuits

Info

Publication number
GB444399A
GB444399A GB2693434A GB2693434A GB444399A GB 444399 A GB444399 A GB 444399A GB 2693434 A GB2693434 A GB 2693434A GB 2693434 A GB2693434 A GB 2693434A GB 444399 A GB444399 A GB 444399A
Authority
GB
United Kingdom
Prior art keywords
circuits
fault
motor
conductor
circuit
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
GB2693434A
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.)
DENIS ERNEST JEWITT
British Thomson Houston Co Ltd
Original Assignee
DENIS ERNEST JEWITT
British Thomson Houston Co 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 DENIS ERNEST JEWITT, British Thomson Houston Co Ltd filed Critical DENIS ERNEST JEWITT
Priority to GB2693434A priority Critical patent/GB444399A/en
Priority to DEA77107D priority patent/DE659350C/en
Publication of GB444399A publication Critical patent/GB444399A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
    • B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Locating Faults (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Protection Of Generators And Motors (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

444,399. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and BUTLER, F. E., 74, Eastlands Road, and JEWITT, D. E., 17, Hillmorton Road, both in Rugby. Sept. 19, 1934, No. 26934. [Class 38 (v)] Apparatus for detecting and cutting out faults in supply systems consisting of a number of circuits, particularly on ships, where insulation failures are frequent, comprises a relay Y connected to the supply mains and adapted to be operated by the occurrence of a fault to complete the circuit of a motor M, which drives a generator G to apply a testing current to the circuits in turn and automatically cuts out the faulty one. Two power circuits are shown connected by solenoid-operated contactors K, with overload relays L, to bus-bars N, across which is a resistance having its mid point earthed through the coil of the relay Y. An insulation fault on a conductor or conductors causes the relay Y to start the motor M which drives the generator G and also a multi-contact switch, which has a set of three contacts A .. C for each circuit and, by its rotation, causes each circuit to be opened in turn at A and a testing current to be supplied from G to each opened conductor in turn over contacts B, C. If there is a fault on the conductor under test, the detector P trips contacts R and permanently disconnects the circuit containing that conductor. Should there be a further fault on the system, the motor M will go on testing the circuits in turn until the fault has been found and disconnected, whereupon Y stops the motor.
GB2693434A 1934-09-19 1934-09-19 Improvements in and relating to fault detecting and cutting out systems for electricsupply circuits Expired GB444399A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2693434A GB444399A (en) 1934-09-19 1934-09-19 Improvements in and relating to fault detecting and cutting out systems for electricsupply circuits
DEA77107D DE659350C (en) 1934-09-19 1935-09-19 Device for the selective detection of an earth faulty conductor of a system with several normally ungrounded conductors, especially for ship systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2693434A GB444399A (en) 1934-09-19 1934-09-19 Improvements in and relating to fault detecting and cutting out systems for electricsupply circuits

Publications (1)

Publication Number Publication Date
GB444399A true GB444399A (en) 1936-03-19

Family

ID=10251506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2693434A Expired GB444399A (en) 1934-09-19 1934-09-19 Improvements in and relating to fault detecting and cutting out systems for electricsupply circuits

Country Status (2)

Country Link
DE (1) DE659350C (en)
GB (1) GB444399A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973774C (en) * 1953-11-19 1960-06-02 Walther Dipl-Ing Bender Equipment for insulation monitoring of electrical networks
DE1051970B (en) * 1956-03-28 1959-03-05 Heinz Wurz Dipl Ing Procedure for the localization of a grounded power supply unit without operational interruption in an alternating or three-phase high-voltage cable network with a non-rigidly grounded zero point

Also Published As

Publication number Publication date
DE659350C (en) 1938-05-02

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