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BS EN 60255-27:2014

Current
Current

The latest, up-to-date edition.

Measuring relays and protection equipment Product safety requirements
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-06-2014

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General safety requirements
5 Protection against electric shock
6 Mechanical aspects
7 Flammability and resistance to fire
8 General and fundamental design
   requirements for safety
9 Marking, documentation and packaging
10 Type tests and routine tests
Annex A (normative) - Isolation class requirements
        and example diagrams
Annex B (normative) - Rated impulse voltages
Annex C (normative) - Guidance for the determination
        of clearance, creepage distance and
        withstand voltages
Annex D (informative) - Components
Annex E (normative) - External wiring terminations
Annex F (informative) - Examples of battery protection
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Specifies the product safety requirements for measuring relays and protection equipment having a rated a.c. voltage up to 1000 V with a rated frequency up to 65 Hz, or a rated d.c. voltage up to 1500 V.

This part of the IEC 60255 series describes the product safety requirements for measuring relays and protection equipment having a rated a.c. voltage up to 1 000 V with a rated frequency up to 65 Hz, or a rated d.c. voltage up to 1 500 V. Above these limits, IEC 60664-1 is applicable for the determination of clearance, creepage distance and withstand test voltage.

This standard details essential safety requirements to minimize the risk of fire and hazards caused by electric shock or injury to the user.

This standard does not cover the safety requirements of installations. It does cover all the ways in which the equipment may be mounted and used in cubicles, racks and panels, and also retesting. This standard also applies to auxiliary devices such as shunts, series resistors, transformers, etc., that are used in conjunction with measuring relays and protection equipment and are tested together.

Ancillary equipment used in conjunction with measuring relays and protection equipment may need to comply with additional safety requirements.

This standard is intended to describe only product safety requirements; therefore, functional performance of the equipment is not covered.

Functional safety requirements, including EMC functional safety, are not covered by this standard. Functional safety risk analysis is not within the scope of this product safety standard.

This standard does not specify the implementation of individual equipment, circuits and components.

The object of this standard is to have a comprehensive standard that covers all aspects of product safety and the related type and routine tests, for measuring relays and protection equipment.

This standard applies to equipment designed to be safe at least under the following environmental conditions:

  • indoor use;

  • altitude up to 2 000 m, in accordance with IEC 60255-1;

  • external operating temperature range, in accordance with IEC 60255-1;

  • maximum external relative humidity 95 %, non-condensing, in accordance with IEC 60255-1;

  • supply fluctuations in accordance with IEC 60255-1;

  • applicable supply overvoltage category;

  • external pollution degree 1 and external pollution degree 2.

The equipment will normally be installed in a restricted access area within a power station, substation or industrial/retail environment. The environmental conditions specified for the equipment in IEC 60255-1 apply. This standard considers the normal environmental conditions of corrosion caused by humidity but does not cover corrosion by atmospheric pollution.

It is assumed that access to the equipment during installation, maintenance, normal service and decommissioning is restricted to users aware of working procedures necessary to ensure safety.

This product safety standard takes precedence over general standards for matters of safety.

Committee
PEL/95
DevelopmentNote
Supersedes 01/206938 DC. (10/2006) Supersedes 11/30250287 DC. (04/2014) Supersedes BS EN 60255-5. (06/2014)
DocumentType
Standard
Pages
100
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
NF EN 60255-27 : 2014 Identical
EN 60255-27:2014 Identical
NBN EN 60255-27 : 2014 Identical
IEC 60255-27:2013 Identical
I.S. EN 60255-27:2014 Identical
SN EN 60255-27 : 2005 Identical
UNE-EN 60255-27:2007 Identical
DIN EN 60255-27 : 2014 Identical

IEC 60112:2003+AMD1:2009 CSV Method for the determination of the proof and the comparative tracking indices of solid insulating materials
IEC 60255-21-2:1988 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section Two: Shock and bump tests
EN 60352-2:2006/A1:2013 SOLDERLESS CONNECTIONS - PART 2: CRIMPED CONNECTIONS - GENERAL REQUIREMENTS, TEST METHODS AND PRACTICAL GUIDANCE
IEC 60384-14:2013+AMD1:2016 CSV Fixed capacitors for use in electronic equipment - Part 14: Sectional specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains
EN 60825-1:2014/AC:2017-06 SAFETY OF LASER PRODUCTS - PART 1: EQUIPMENT CLASSIFICATION AND REQUIREMENTS (IEC 60825-1:2014)
EN 60255-26:2013/AC:2013 MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 26: ELECTROMAGNETIC COMPATIBILITY REQUIREMENTS
EN 60085:2008 Electrical insulation - Thermal evaluation and designation
IEC 60255-21-3:1993 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic tests
IEC 62151:2000 Safety of equipment electrically connected to a telecommunication network
IEC 60825-1:2014 Safety of laser products - Part 1: Equipment classification and requirements
IEC 61810-1:2015 Electromechanical elementary relays - Part 1: General and safety requirements
IEC 62103:2003 Electronic equipment for use in power installations
IEC 60127-1:2006+AMD1:2011+AMD2:2015 CSV Miniature fuses - Part 1: Definitions for miniature fuses andgeneral requirements for miniature fuse-links
IEC 60695-2-13:2010+AMD1:2014 CSV Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods- Glow-wire ignition temperature (GWIT) test method for materials
IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
IEC 60352-1:1997 Solderless connections - Part 1: Wrapped connections - General requirements, test methods and practical guidance
EN 60255-1:2010 Measuring relays and protection equipment - Part 1: Common requirements
ISO 262:1998 ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts
IEC 61180-2:1994 High-voltage test techniques for low-voltage equipment - Part 2: Test equipment
IEC 60695-2-12:2010+AMD1:2014 CSV Fire hazard testing - Part 2-12: Glowing/hot-wire based test methods- Glow-wire flammability index (GWFI) test method for materials
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
ISO 9772:2012 Cellular plastics Determination of horizontal burning characteristics of small specimens subjected to a small flame
IEC 60695-11-10:2013 Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods
EN 61032:1998 Protection of persons and equipment by enclosures - Probes for verification
EN 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
IEC 60255-5:2000 Electrical Relays - Part 5: Insulation coordination for measuring relays and protection equipment - Requirements and tests
IEC 60255-1:1967 Electrical relays - Part 1: Instantaneous all-or-nothing relays
IEC 60255-21-1:1988 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section One: Vibration tests (sinusoidal)
ISO 3864-1:2011 Graphical symbols Safety colours and safety signs Part 1: Design principles for safety signs and safety markings
EN 60255-21-1:1995 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 1: Vibration tests (sinusoidal)
ISO 261:1998 ISO general purpose metric screw threads General plan
IEC 60352-2:2006+AMD1:2013 CSV Solderless connections - Part 2: Crimped connections - Generalrequirements, test methods and practical guidance
EN 60352-1:1997 Solderless connections - Part 1: Wrapped connections - General requirements, test methods and practical guidance
IEC 60664-3:2016 Insulation coordination for equipment within low-voltage systems - Part 3: Use of coating, potting or moulding for protection against pollution
EN 61140:2016 Protection against electric shock - Common aspects for installation and equipment
IEC 61180-1:1992 High-voltage test techniques for low voltage equipment - Part 1: Definitions, test and procedure requirements
EN 61010-1:2010 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements
IEC 60068-3-4:2001 Environmental testing - Part 3-4: Supporting documentation and guidance - Damp heat tests
EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
ISO 7000:2014 Graphical symbols for use on equipment Registered symbols
IEC 61140:2016 Protection against electric shock - Common aspects for installation and equipment
IEC 60255-26:2013 Measuring relays and protection equipment - Part 26: Electromagnetic compatibility requirements
IEC 61032:1997 Protection of persons and equipment by enclosures - Probes for verification
EN 60255-21-2:1995 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 2: Shock and bump tests
IEC 61010-1:2010+AMD1:2016 CSV Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements
EN 61180-2:1994 High-voltage test techniques for low-voltage equipment - Part 2: Test equipment
IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
EN 60664-3:2017 Insulation coordination for equipment within low-voltage systems - Part 3: Use of coating, potting or moulding for protection against pollution
EN 60255-21-3:1995 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic tests
EN 61180-1:1994 High-voltage test techniques for low-voltage equipment - Part 1: Definitions, test and procedure requirements
IEC 60990:2016 Methods of measurement of touch current and protective conductor current
EN 60990:2016 Methods of measurement of touch current and protective conductor current

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