WHAT IS EN 1149-5?
This European standard is part of a set of test techniques and requirements for protective clothing's electrostatic characteristics. To avoid incendiary discharges, the standard specifies material and design standards for garments used as part of a total earthed system. In oxygen-rich flammable atmospheres, the criteria may not be sufficient.
EN 1149-5: IS A FAMILY OF STANDARDS AND INCLUDES 5 PRIMARY TEST METHODS
PLEASE NOTE - EN 1149-4: Garment Test (Is under development). The other test methods are described below.
Surface resistivity is measured using this test method.Theconductivity between two places on a fabric's surface is measured by surface resistance. The higher the conductivity, the lower the resistance, so the charge goes to earth.
Measurement of electrical resistance through a material using a test method (vertical resistance). When measured through the depth of a fabric, this represents the level of conductivity.
Methods for determining the rate of charge decay. The time it takes for an electric current to dissipate is called charge decay. The faster itdissipates;the better the garment's anti-static effects are.
Specifies the performance and design criteria for all electrostatic dissipative protective apparel as part of a complete earthed system, including shoes, clothing, and the floor, in order to avoid static discharge. The material complies with the standards.
THIS EUROPEAN STANDARD IS NOT APPLICABLE FOR SPECIFYING PROTECTION AGAINST MAIN VOLTAGES