GB155095A - Improvements in or relating to the generation, transmission, and distribution of electricity - Google Patents

Improvements in or relating to the generation, transmission, and distribution of electricity

Info

Publication number
GB155095A
GB155095A GB2785819A GB2785819A GB155095A GB 155095 A GB155095 A GB 155095A GB 2785819 A GB2785819 A GB 2785819A GB 2785819 A GB2785819 A GB 2785819A GB 155095 A GB155095 A GB 155095A
Authority
GB
United Kingdom
Prior art keywords
core
circuit
switches
secondaries
relays
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
GB2785819A
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.)
ARTHUR HILTON HIGGS
WILLIAM HENRY HANSTOCK
Ferranti International PLC
Original Assignee
ARTHUR HILTON HIGGS
WILLIAM HENRY HANSTOCK
Ferranti PLC
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 ARTHUR HILTON HIGGS, WILLIAM HENRY HANSTOCK, Ferranti PLC filed Critical ARTHUR HILTON HIGGS
Priority to GB2785819A priority Critical patent/GB155095A/en
Publication of GB155095A publication Critical patent/GB155095A/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
    • H02H3/286—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 involving comparison of similar homopolar quantities

Landscapes

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

Abstract

155,095. Hawkins, H., Hanstock, W. H., Higgs, A. H., and Ferranti, Ltd. Nov. 11, 1919. Protective arrangements.-In a protective system for an alternating-current network, iron-core ring transformers are arranged at both ends of each protected feeder, the secondaries being connected in a pilot-wire circuit with relays to cause the operation of the circuit-breakers. Parallel three-core feeders a, a<1> are shown in Fig. 1 with oil switches b, b<1> at their ends, and with ring transformers c, c<1> of the type described in Specification 12685/09. If a fault occurs in a core of cne of the feeders, the unbalanced current induces an electromotive force in the transformer secondaries. This causes a current to flow in the pilot circuit to operate the relays e, thereby closing the trip circuits of the oil switches b or b<1>. The switches on the healthy feed are not operated as the currents in the transformer secondaries on that feeder oppose each other.
GB2785819A 1919-11-11 1919-11-11 Improvements in or relating to the generation, transmission, and distribution of electricity Expired GB155095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2785819A GB155095A (en) 1919-11-11 1919-11-11 Improvements in or relating to the generation, transmission, and distribution of electricity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2785819A GB155095A (en) 1919-11-11 1919-11-11 Improvements in or relating to the generation, transmission, and distribution of electricity

Publications (1)

Publication Number Publication Date
GB155095A true GB155095A (en) 1920-12-16

Family

ID=10266453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2785819A Expired GB155095A (en) 1919-11-11 1919-11-11 Improvements in or relating to the generation, transmission, and distribution of electricity

Country Status (1)

Country Link
GB (1) GB155095A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2533821A (en) * 2015-01-05 2016-07-06 Kostanjsek Mark Safety breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2533821A (en) * 2015-01-05 2016-07-06 Kostanjsek Mark Safety breaker
GB2533821B (en) * 2015-01-05 2017-01-11 Kostanjsek Mark Safety breaker

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