GB1037577A - Improvements in bus-bar protective devices - Google Patents

Improvements in bus-bar protective devices

Info

Publication number
GB1037577A
GB1037577A GB3540964A GB3540964A GB1037577A GB 1037577 A GB1037577 A GB 1037577A GB 3540964 A GB3540964 A GB 3540964A GB 3540964 A GB3540964 A GB 3540964A GB 1037577 A GB1037577 A GB 1037577A
Authority
GB
United Kingdom
Prior art keywords
bus
resistor
potential
bar
input
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
GB3540964A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Switzerland
BBC Brown Boveri France 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 Brown Boveri und Cie AG Switzerland, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Switzerland
Publication of GB1037577A publication Critical patent/GB1037577A/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
    • H02H3/28—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 two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
    • 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
    • H02H3/28—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 two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
    • H02H3/30—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 two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
    • H02H3/305—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 two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel involving current comparison
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1,037,577. Protective systems. BROWN, BOVERI & CO. Ltd. Aug. 28, 1964 [Aug. 30, 1963], No. 35409/64. Heading H2K. A bus-bar protective arrangement has a resistor 11, 12 or 13 connected to each current transformer 8, 9 or 10 to supply a potential to an input of an " AND " element 14, and a resistor 15 is connected in a summation circuit to all the current transformers to supply a potential to a further input of the " AND " element. Under normal conditions, the currents sum to zero so that no potential is applied to the input of the " AND " element connected to the resistor 15 and the " AND " element provides no output signal. In the event of a bus-bar fault, the currents no longer sum to zero and potentials are present at all the inputs to the " AND " element 14 which provides an output to energize a relay 16. The relay 16 closes contacts to produce tripping of circuit-breakers 5 ... 7. Fig. 2 (not shown) illustrates the arrangement applied to a duplicate bus-bar system and includes squarer circuits connected between the resistors and the " AND " elements, the operation of the squarer circuits and " AND " elements being controlled by overcurrent relays.
GB3540964A 1963-08-30 1964-08-28 Improvements in bus-bar protective devices Expired GB1037577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1078463A CH403948A (en) 1963-08-30 1963-08-30 Busbar protection with electronic links

Publications (1)

Publication Number Publication Date
GB1037577A true GB1037577A (en) 1966-07-27

Family

ID=4366829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3540964A Expired GB1037577A (en) 1963-08-30 1964-08-28 Improvements in bus-bar protective devices

Country Status (3)

Country Link
BE (1) BE652413A (en)
CH (1) CH403948A (en)
GB (1) GB1037577A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989236A1 (en) * 2012-04-10 2013-10-11 Ece MEASUREMENT METHOD FOR DETECTING A FAULT OF A THREE-PHASE AREA

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989236A1 (en) * 2012-04-10 2013-10-11 Ece MEASUREMENT METHOD FOR DETECTING A FAULT OF A THREE-PHASE AREA
US9293908B2 (en) 2012-04-10 2016-03-22 Ece Method of measurement for detecting a fault of a three-phase zone

Also Published As

Publication number Publication date
CH403948A (en) 1965-12-15
BE652413A (en) 1964-12-16

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