IEC 60721-3-5:1997

CONTENTS
FOREWORD
Clause
1. Scope and object
2. Normative references
3. Definitions
4. General
5. Classification of groups of environmental
     parameters and their severities
Tables
1 Classification of climatic conditions
1A Classification of special climatic conditions
2 Classification of biological conditions
3 Classification of chemically active substances
4 Classification of mechanically active substances
5 Classification of contaminating fluids
6 Classification of mechanical conditions
Figure 1
Annexes
A Survey of conditions affecting the choice of
     environmental parameters and their severities
B Explanation of the environmental conditions in
     tropical areas as specified in classes 5K5 and 5K6

Classifies the environmental conditions to which a product not forming part of the vehicle is subjected when installed in a ground vehicle. Such products are for example radios, communication systems, fare meters, and flow meters for liquids transported by the vehicle. Vehicles where products may be permanently or temporarily installed include road vehicles, rail vehicles, overland vehicles, handling and storage vehicles, and self-propelled machinery.