GB1321806A - Polyphase current transformer for feeding polyphase thermal overcurrent trip elements - Google Patents

Polyphase current transformer for feeding polyphase thermal overcurrent trip elements

Info

Publication number
GB1321806A
GB1321806A GB2826171A GB2826171A GB1321806A GB 1321806 A GB1321806 A GB 1321806A GB 2826171 A GB2826171 A GB 2826171A GB 2826171 A GB2826171 A GB 2826171A GB 1321806 A GB1321806 A GB 1321806A
Authority
GB
United Kingdom
Prior art keywords
polyphase
current transformer
feeding
phase
overcurrent trip
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
GB2826171A
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh AG
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
Priority claimed from CH1352570A external-priority patent/CH504087A/en
Application filed by Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Publication of GB1321806A publication Critical patent/GB1321806A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/38—Instruments transformers for polyphase ac
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

1321806 Current transformers SPRECHER & SCHUH AG 16 June 1971 [11 Sept 1970] 28261/71 Heading HIT A three phase current transformer has a threewindowed magnetic core formed of limbs 4, 5, 6, 7 butted on to projecting portions of yokes 9 the phase primary conductors 18 each passing through a window as do the series connected pairs of phase secondary windings 26. The core parts are held together by tapped plates 12, and tie bolts 10 and the cover parts are secured together and to the transformer by studs 13, 25. The primary bars are surrounded by insulating hose 20. The symmetrical arrangement of the windings is said to avoid saturation of the core.
GB2826171A 1970-09-11 1971-06-16 Polyphase current transformer for feeding polyphase thermal overcurrent trip elements Expired GB1321806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1352570A CH504087A (en) 1969-01-28 1970-09-11 Multi-phase current transformer for the supply of thermal overcurrent release devices

Publications (1)

Publication Number Publication Date
GB1321806A true GB1321806A (en) 1973-07-04

Family

ID=4393177

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2826171A Expired GB1321806A (en) 1970-09-11 1971-06-16 Polyphase current transformer for feeding polyphase thermal overcurrent trip elements

Country Status (2)

Country Link
DE (1) DE2121380A1 (en)
GB (1) GB1321806A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000622A2 (en) * 2007-06-25 2008-12-31 Siemens Aktiengesellschaft Measuring transducer arrangement with multiple secondary circuits
WO2012101421A3 (en) * 2011-01-26 2012-11-29 Rayleigh Instruments Limited Current transformer
WO2014005615A1 (en) * 2012-07-02 2014-01-09 Siemens Aktiengesellschaft Current transformer assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906653A1 (en) * 1979-02-21 1980-09-04 Ritz Messwandler Kg Multiple pole distributor rail stray current protection - uses frame inside rectangular core carrying two sets of windings per rail

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000622A2 (en) * 2007-06-25 2008-12-31 Siemens Aktiengesellschaft Measuring transducer arrangement with multiple secondary circuits
WO2009000622A3 (en) * 2007-06-25 2009-02-19 Siemens Ag Measuring transducer arrangement with multiple secondary circuits
WO2012101421A3 (en) * 2011-01-26 2012-11-29 Rayleigh Instruments Limited Current transformer
EP2937878A1 (en) * 2011-01-26 2015-10-28 Rayleigh Instruments Limited Current transformer
US9384884B2 (en) 2011-01-26 2016-07-05 Rayleigh Instruments Limited Current transformer
WO2014005615A1 (en) * 2012-07-02 2014-01-09 Siemens Aktiengesellschaft Current transformer assembly
CN104395975A (en) * 2012-07-02 2015-03-04 西门子公司 Current transformer assembly

Also Published As

Publication number Publication date
DE2121380A1 (en) 1972-03-16

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Legal Events

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