IEC TR 60721-4-6-2003 PDF

Full title and description

St IEC TR 60721-4-6-2003 — Classification of environmental conditions — Part 4-6: Guidance for the correlation and transformation of environmental condition classes of IEC 60721-3 to the environmental tests of IEC 60068 (ship environment). This technical report gives guidance and easy-to-use correlation tables to transform environmental condition classes (particularly dynamic and climatic parameters) defined for shipboard equipment into appropriate environmental tests.

Abstract

Provides guidance to specification writers and test engineers on how to correlate the environmental condition classes from IEC 60721-3-6 with the environmental test procedures of IEC 60068-2 for shipboard environments. The report concentrates on dynamic and climatic effects and supplies conversion and transformation tables and explanatory notes to help select and define tests.

General information

• Status: Valid (published as a Technical Report with Amendment 1 incorporated in a consolidated version).
• Publication date: Base TR published 30 March 2001; Amendment 1 published 22 May 2003; consolidated CSV published 15 August 2003.
• Publisher: IEC — International Electrotechnical Commission.
• ICS / categories: 19.040 (Environmental testing).
• Edition / version: Edition 1.0 (2001) with Amendment 1 (2003); consolidated edition 1.1 (2003).
• Number of pages: Base TR: 47 pages; Amendment 1 (standalone): 39 pages; Consolidated CSV: 79 pages.

Scope

This technical report covers the ship environment (IEC 60721-3-6) and gives practical guidance for correlating the descriptive environmental condition classes with the test procedures of IEC 60068-2. It addresses primarily dynamic (mechanical/vibration/shock) and climatic (temperature, humidity, salt mist, etc.) parameters relevant to equipment used aboard ships and provides transformation tables, explanatory text and recommendations for selection of appropriate test severities. It is intended as a horizontal guidance document rather than a mandatory test specification.

Key topics and requirements

• Correlation methodology between IEC 60721-3 environmental condition classes and IEC 60068-2 test methods.
• Transformation tables mapping class severities to specific environmental test parameters (e.g., temperature ranges, vibration profiles, salt mist exposure levels).
• Guidance on interpreting combined environments (dynamic + climatic) for shipboard equipment.
• Notes on limitations and assumptions used when converting descriptive classes to quantitative test procedures.
• Recommendations for specification writers on how to state environmental requirements and invoke appropriate tests.

Typical use and users

Used by standards writers, equipment designers, test engineers, naval architects, qualification/test laboratories and procurement specialists who need to define, interpret or test environmental requirements for equipment intended for shipboard service. It is particularly useful when translating operational/environmental class statements in procurement or design documents into concrete test procedures.

Related standards

Directly related to IEC 60721 series (classification of environmental conditions) and IEC 60068 series (environmental testing methods). It should be used in conjunction with IEC 60721-3-6 (ship environment descriptions) and the relevant IEC 60068-2 test-method parts for the specific climatic or dynamic tests referenced. Other TC 104 publications and national adoptions/amendments may also be relevant.

Keywords

IEC TR 60721-4-6, ship environment, environmental classification, IEC 60721, IEC 60068-2, correlation tables, transformation guidance, dynamic conditions, climatic conditions, environmental testing.

FAQ

Q: What is this standard?

A: A technical report (IEC TR) giving guidance to correlate environmental condition classes from IEC 60721-3-6 (ship environment) with the environmental test methods of IEC 60068-2.

Q: What does it cover?

A: It covers methods and practical tables to transform descriptive environmental classes (primarily dynamic and climatic) into specific, testable parameters and test procedures suitable for shipboard equipment qualification.

Q: Who typically uses it?

A: Specification writers, design engineers, test laboratories and procurement or qualification teams working on equipment intended for marine/shipboard service who need to translate environmental class statements into concrete test programs.

Q: Is it current or superseded?

A: The original TR was published 30 March 2001 and amended in 2003 (Amendment 1). A consolidated version (edition 1.1) incorporating the amendment was published in 2003. Catalog entries list the report as valid; users should check the IEC catalogue or national standards body for any later revisions or withdrawals before assuming currency.

Q: Is it part of a series?

A: Yes — it is part of the IEC 60721 family (classification of environmental conditions) and is intended to be used with other parts of IEC 60721 and with the IEC 60068 environmental test-method series.

Q: What are the key keywords?

A: Ship environment, environmental classification, IEC 60721-3-6, IEC 60068-2, transformation tables, dynamic conditions, climatic conditions, test correlation.