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EN 61857-1:2009

Current
Current

The latest, up-to-date edition.

Electrical insulation systems - Procedures for thermal evaluation - Part 1: General requirements - Low-voltage
Published date

15-01-2009

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General information
  4.1 Overview of test procedure
  4.2 Basis of evaluation and qualification
  4.3 Specific requirements
5 Test objects
  5.1 General
  5.2 Description
  5.3 Number of test objects
6 Test procedures
  6.1 General
  6.2 Initial screening tests
  6.3 Thermal ageing
  6.4 Prediagnostic mechanical stress
  6.5 Other prediagnostic conditioning
  6.6 Moisture exposure
  6.7 Dielectric diagnostic tests
  6.8 Other diagnostic tests
7 Analyzing, reporting and classification
  7.1 End-point criterion
  7.2 Method of determining life
  7.3 Extrapolation of data
  7.4 Report of results
Bibliography
Annex ZA (normative) - Normative references to international
                       publications with their corresponding
                       European publications

IEC 61857-1:2008 specifies a general test procedure for the thermal evaluation and qualification of electrical insulation systems (EIS) and establishes a procedure that compares the performance of a candidate EIS to that of a reference EIS. This standard is applicable to existing or proposed EIS used in electrotechnical products with an input voltage of up to 1 000 V where the thermal factor is the dominating ageing factor. This third edition cancels and replaces the second edition published in 2004, and constitutes editorial revisions to make this standard compatible with Parts 21 and 22.

Committee
CLC/SR 112
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Current

BS EN 61857-23:2002 Electrical insulation systems. Procedures for thermal evaluation Specific requirements for general purpose, tall-channel model. Wire-wound electrical insulation system (EIS)
I.S. EN 61857-22:2008 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
I.S. EN 61858:2008 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED WIRE-WOUND EIS
I.S. EN 61857-21:2009 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
EN 61857-23:2002 Electrical insulation systems - Procedures for thermal evaluation - Part 23: Specific requirements for general purpose, tall-channel model - Wire-wound electrical insulation systems (EIS)
CEI EN 61857-21 : 2012 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
CEI EN 61857-22 : 2010 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 22: SPECIFIC REQUIREMENTS FOR ENCAPSULATED-COIL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEM (EIS)
BS EN 61857-21:2009 Electrical insulation systems. Procedures for thermal evaluation Specific requirements for general-purpose models. Wire-wound applications
I.S. EN 61857-23:2002 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 23: SPECIFIC REQUIREMENTS FOR GENERAL PURPOSE, TALL-CHANNEL MODEL - WIRE-WOUND ELECTRICAL INSULATION SYSTEMS (EIS)
BS EN 61857-31:2017 Electrical insulation systems. Procedures for thermal evaluation Applications with a designed life of 5 000 h or less
CEI EN 61857-31 : 1ED 2017 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 31: APPLICATIONS WITH A DESIGNED LIFE OF 5000 H OR LESS
BS EN 61858-1:2014 Electrical insulation systems. Thermal evaluation of modifications to an established electrical insulation system (EIS) Wire-wound winding EIS
BS EN 61857-22:2008 Electrical insulation systems. Procedures for thermal evaluation Specific requirements for encapsulated-coil model. Wire-wound electrical insulation system (EIS)
BS EN 61858:2008 Electrical insulation systems. Thermal evaluation of modifications to an established wire-wound EIS
I.S. EN 61857-31:2017 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 31: APPLICATIONS WITH A DESIGNED LIFE OF 5000 H OR LESS
I.S. EN 61858-1:2014 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED ELECTRICAL INSULATION SYSTEM (EIS) - PART 1: WIRE-WOUND WINDING EIS
EN 61857-22:2008 Electrical insulation systems - Procedures for thermal evaluation - Part 22: Specific requirements for encapsulated-coil model - Wire-wound electrical insulation system (EIS)
EN 61858-1:2014 Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 1: Wire-wound winding EIS
EN 61857-21:2009 ELECTRICAL INSULATION SYSTEMS - PROCEDURES FOR THERMAL EVALUATION - PART 21: SPECIFIC REQUIREMENTS FOR GENERAL-PURPOSE MODELS - WIRE-WOUND APPLICATIONS
EN 61857-31:2017 Electrical insulation systems - Procedures for thermal evaluation - Part 31: Applications with a designed life of 5 000 h or less
EN 61858:2008 ELECTRICAL INSULATION SYSTEMS - THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED WIRE-WOUND EIS

EN 60085:2008 Electrical insulation - Thermal evaluation and designation
IEC 60216-4-1:2006 Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens
IEC 60493-1:2011 Guide for the statistical analysis of ageing test data - Part 1: Methods based on mean values of normally distributed test results
IEC 60611:1978 Guide for the preparation of test procedures for evaluating the thermal endurance of electrical insulation systems
IEC 60505:2011 Evaluation and qualification of electrical insulation systems
IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
IEC 60034-18-1:2010 Rotating electrical machines - Part 18-1: Functional evaluation of insulation systems - General guidelines
IEC 62114:2001 Electrical Insulation Systems - Thermal classification
EN 60216-5:2008 Electrical insulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material
IEC 60034-18-21:2012 Rotating electrical machines - Part 18-21: Functional evaluation of insulation systems - Test procedures for wire-wound windings - Thermal evaluation and classification
IEC 60034-18-31:2012 Rotating electrical machines - Part 18-31: Functional evaluation of insulation systems - Test procedures for form-wound windings - Thermal evaluation and classification of insulation systems used in rotating machines
EN 60216-4-1:2006 Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens
IEC 60216-5:2008 Electrical insulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material
EN 60505:2011/AC:2017-03 EVALUATION AND QUALIFICATION OF ELECTRICAL INSULATION SYSTEMS (IEC 60505:2011/COR1:2017)

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