FR2273390A1 - Protection of power distribution transformers - has transformer hot spot temp sensor controlling circuit breaker - Google Patents

Protection of power distribution transformers - has transformer hot spot temp sensor controlling circuit breaker

Info

Publication number
FR2273390A1
FR2273390A1 FR7418604A FR7418604A FR2273390A1 FR 2273390 A1 FR2273390 A1 FR 2273390A1 FR 7418604 A FR7418604 A FR 7418604A FR 7418604 A FR7418604 A FR 7418604A FR 2273390 A1 FR2273390 A1 FR 2273390A1
Authority
FR
France
Prior art keywords
power distribution
protection
breaker
load
circuit breaker
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.)
Withdrawn
Application number
FR7418604A
Other languages
French (fr)
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.)
Societe Franccaise Gardy SA
Original Assignee
Societe Franccaise Gardy 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 Societe Franccaise Gardy SA filed Critical Societe Franccaise Gardy SA
Priority to FR7418604A priority Critical patent/FR2273390A1/en
Publication of FR2273390A1 publication Critical patent/FR2273390A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02H7/04—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 transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors

Landscapes

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

Abstract

The circuit breaker and control system is for the protection of low and medium level voltage power distribution transformers and is normally installed on the distribution line posts or at ground level. The design is intended to provide protection against overloading levels below those due to short circuit overload conditions. Initial overload sensing is by environmental temperature compensated heat detectors situated close to expected hot spots in the transformer unit, these operating a pilot relay prior to switching out of the main contact breaker. Load levels exceeding three times the expected load to a complete short circuit load will operate the breaker circuit.
FR7418604A 1974-05-29 1974-05-29 Protection of power distribution transformers - has transformer hot spot temp sensor controlling circuit breaker Withdrawn FR2273390A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7418604A FR2273390A1 (en) 1974-05-29 1974-05-29 Protection of power distribution transformers - has transformer hot spot temp sensor controlling circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7418604A FR2273390A1 (en) 1974-05-29 1974-05-29 Protection of power distribution transformers - has transformer hot spot temp sensor controlling circuit breaker

Publications (1)

Publication Number Publication Date
FR2273390A1 true FR2273390A1 (en) 1975-12-26

Family

ID=9139398

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7418604A Withdrawn FR2273390A1 (en) 1974-05-29 1974-05-29 Protection of power distribution transformers - has transformer hot spot temp sensor controlling circuit breaker

Country Status (1)

Country Link
FR (1) FR2273390A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993010587A1 (en) * 1991-11-22 1993-05-27 Pioch S.A. Electronic apparatus for measuring the activity of an oil transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993010587A1 (en) * 1991-11-22 1993-05-27 Pioch S.A. Electronic apparatus for measuring the activity of an oil transformer
US5534853A (en) * 1991-11-22 1996-07-09 Pioch S.A. Electronic apparatus for measuring the parameters of an oil transformer

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Legal Events

Date Code Title Description
ST Notification of lapse