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I.S. EN 60255-149:2013

I.S. EN 60255-149:2013

Current

Current

The latest, up-to-date edition.

MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 149: FUNCTIONAL REQUIREMENTS FOR THERMAL ELECTRICAL RELAYS (IEC 60255-149:2013 (EQV))

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2013

Publisher

National Standards Authority of Ireland

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.


Dates of withdrawal of national standards are available from NSAI.

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Specification of the function
5 Performance specification
6 Functional test methodology
7 Documentation requirements
Annex A (informative) - Simple first-order thermal
        model of electrical equipment
Annex B (informative) - Thermal electrical relays
        which use temperature as setting parameters
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

Defines a common and reproducible reference for evaluating dependent time relays which protect equipment from thermal damage by measuring a.c. current flowing through the equipment.

DevelopmentNote
Supersedes I.S. EN 60255-8. (10/2013) For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
DocumentType
Standard
Pages
52
PublisherName
National Standards Authority of Ireland
Status
Current
Supersedes

Standards Relationship
EN 60255-149:2013 Identical

IEC 60947-4-1:2009+AMD1:2012 CSV Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters
EN 60085:2008 Electrical insulation - Thermal evaluation and designation
EN 61850-7-4:2010 Communication networks and systems for power utility automation - Part 7-4: Basic communication structure - Compatible logical node classes and data object classes
IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
EN 60255-1:2010 Measuring relays and protection equipment - Part 1: Common requirements
IEC 61850-9-2:2011 Communication networks and systems for power utility automation - Part 9-2: Specific communication service mapping (SCSM) - Sampled values over ISO/IEC 8802-3
IEC 60947-4-2:2011 Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - AC semiconductor motor controllers and starters
IEC 60255-1:1967 Electrical relays - Part 1: Instantaneous all-or-nothing relays
IEC 61850-7-4:2010 Communication networks and systems for power utility automation - Part 7-4: Basic communication structure - Compatible logical node classes and data object classes
IEEE C37.96-2012 IEEE Guide for AC Motor Protection

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