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10/30215568 DC : 0

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

BS EN 60255-121 - MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 121: FUNCTIONAL REQUIREMENTS FOR DISTANCE PROTECTION

Available format(s)

Hardcopy , PDF

Superseded date

31-07-2014

Superseded by

BS EN 60255-121:2014

Language(s)

English

$93.80
Including GST where applicable

1 Scope and object
2 Normative and definitions
3 Terms and definitions
4 Specification of the function
5 Performance specifications
6 Functional tests
7 Document requirements
Annex A (informative) - Impendance Characteristics
Annex B (normative) - Setting example for radial feeder
Annex C (normative) - Example calculation of mean, median
        and mode
Annex D (informative) - Informative guide for testing
        distance relays based on CT requirements
        Specification
Annex E (informative) - Informative guide for dimensioning
        of CTs for distance protection
Annex F (normative) - Definition of fault inception angle
Annex G (normative) - Capacitive voltage instrument
        transformer model

BS EN 60255-121

Committee
PEL/95
DocumentType
Draft
Pages
111
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

IEC 60044-7:1999 Instrument transformers - Part 7: Electronic voltage transformers
IEC GUIDE 107:2014 Electromagnetic compatibility - Guide to the drafting of electromagnetic compatibility publications
IEC 60044-5:2004 Instrument transformers - Part 5: Capacitor voltage transformers
IEC 60044-2:1997+AMD1:2000+AMD2:2002 CSV Instrument transformers - Part 2 : Inductive voltage transformers
IEC 60044-6:1992 Instrument transformers - Part 6: Requirements for protective current transformers for transient performance
IEC 60255-1:1967 Electrical relays - Part 1: Instantaneous all-or-nothing relays
IEC 60050-444:2002 International Electrotechnical Vocabulary (IEV) - Part 444: Elementary relays

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