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CENELEC
EN 60255-8:1998

EN 60255-8:1998

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Electrical relays - Part 8: Thermal electrical relays

Superseded date

10-01-2013

Published date

01-13-1998

Publisher

European Committee for Standards - Electrical

FOREWORD
PREFACE
SECTION ONE - GENERAL
1 Scope and object
2 Definitions
SECTION TWO - REQUIREMENTS
3 Standard values
4 Accuracy
SECTION THREE - TEST METHODS
5 Tests related to operating characteristics and accuracy
6 Tests for thermal requirements
Figures
Appendix A - Characteristic curves, cold curves
Appendix B - Characteristic curves, hot curves
Appendix C - Example for determining accuracy
Annex ZA (normative) Normative references to international
                     publications with their corresponding
                     European publications

This edition applies to dependent specified time electrical measuring relays which protect equipment from electrical thermal damage by the measurement of current flowing in protected equipment. States the particular requirements for thermal electrical relays. Is to be read in conjunction with higher level documents in the EN 60255 series.

Committee
CLC/TC 95X
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Superseded
SupersededBy

I.S. EN 60694:1999 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
EN 60694:1996/A2:2001 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
BS EN 60255-151:2009 Measuring relays and protection equipment Functional requirements for over/under current protection
BS EN 61347-2-1 : 2001 LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS)
I.S. EN 61347-2-1:2004 LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS)
BS EN 60470:2001 High-voltage alternating current contactors and contactor-based motor starters
BS EN 60255-3:1998 Electrical relays Single input energizing quantity measuring relays with dependent or independent time
BS EN 60694:1997 Common specifications for high-voltage switchgear and controlgear standards
EN 60255-151:2009 Measuring relays and protection equipment - Part 151: Functional requirements for over/under current protection
EN 61347-2-1:2001/A2:2014 LAMP CONTROLGEAR - PART 2-1: PARTICULAR REQUIREMENTS FOR STARTING DEVICES (OTHER THAN GLOW STARTERS) (IEC 61347-2-1:2000/A2:2013)

EN 60255-6 : 94 AC 95 ELECTRICAL RELAYS - MEASURING RELAYS AND PROTECTION EQUIPMENT
IEC 60255-6:1988 Electrical relays - Part 6: Measuring relays and protection equipment

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