GB1348303A - Apparatus for detecting and indicating faults in an electric dc system - Google Patents

Apparatus for detecting and indicating faults in an electric dc system

Info

Publication number
GB1348303A
GB1348303A GB2596871A GB2596871A GB1348303A GB 1348303 A GB1348303 A GB 1348303A GB 2596871 A GB2596871 A GB 2596871A GB 2596871 A GB2596871 A GB 2596871A GB 1348303 A GB1348303 A GB 1348303A
Authority
GB
United Kingdom
Prior art keywords
pairs
primary windings
april
series
pulse
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
GB2596871A
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.)
Saab AB
Original Assignee
Saab Scania AB
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 Saab Scania AB filed Critical Saab Scania AB
Publication of GB1348303A publication Critical patent/GB1348303A/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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/36—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points of different systems, e.g. of parallel feeder systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Locating Faults (AREA)

Abstract

1348303 Protective arrangements SAABSCANIA AB 19 April 1971 [2 April 1970] 25968/71 Heading H2K [Also in Division G4] In an arrangement for indicating faults, e.g. faulty lamps or fuses, in the D.C. system of a road vehicle, aircraft or boat, pairs of opposing primary windings 3A, 3B ... NA, NB are connected in series with pairs of loads 6A, 6B ... 8A, 8B, the pairs of primary windings being arranged on respective closed cores T1...TN having series-connected secondary windings provided by a line 9. When the fluxes of a pair of primary windings cease to cancel each other, a pulse is produced in the secondary winding to cause a pulse sensing device 10 to produce a longer or permanent signal which is applied to an alarm device 11 such as a signal lamp and/or a buzzer. The device 10 may be a transistor amplifier or a thyistor amplifier and may include a monostable multivibrator.
GB2596871A 1970-04-02 1971-04-19 Apparatus for detecting and indicating faults in an electric dc system Expired GB1348303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE456970 1970-04-02

Publications (1)

Publication Number Publication Date
GB1348303A true GB1348303A (en) 1974-03-13

Family

ID=20264468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2596871A Expired GB1348303A (en) 1970-04-02 1971-04-19 Apparatus for detecting and indicating faults in an electric dc system

Country Status (2)

Country Link
DE (1) DE2115662A1 (en)
GB (1) GB1348303A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103135012A (en) * 2012-12-21 2013-06-05 中国飞行试验研究院 Airplane direct current appliance function detector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1448044A (en) * 1974-06-14 1976-09-02 Welwyn Electric Ltd Electric lamp failure indicators
DE3511967A1 (en) * 1985-04-02 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR CONTROLLING ELECTRICAL CONSUMERS IN MOTOR VEHICLES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103135012A (en) * 2012-12-21 2013-06-05 中国飞行试验研究院 Airplane direct current appliance function detector

Also Published As

Publication number Publication date
DE2115662A1 (en) 1971-10-21

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee