SN EN 60068-2-68 : 1996

Introduction
1 General
1.1 Scope
1.2 Description of Test L
2 Normative references
3 Definitions
4 Test La1: non-abrasive fine dust
4.1 Method La1: cyclic air pressure
4.2 Method La2: constant air pressure
4.3 Guidance for test La
5 Test Lb: free settling dust
5.1 Object
5.2 Method Lb
5.3 Guidance for test Lb
6 Test Lc: blown dust and sand
6.1 Method Lc1: recirculating chamber
6.2 Method Lc2: free blowing dust
6.3 Guidance for test Lc
Figures
Annexes
A (informative) Guidance
B (informative) Bibliography
ZA (normative) Normative references to international
     publications with their corresponding European
     publications

Gives methods of testing for determination of the effects of dust and sand suspended in air, on electrotechnical products. It is not intended for testing air filters.