Individual standards of EN 1149

• DIN EN 1149-1:2006-09: Protective clothing - Electrostatic properties - Part 1: Test method for measurement of surface resistivity.
• DIN EN 1149-2:1997-11: Protective clothing - Electrostatic properties - Part 2: Test method for the measurement of electrical resistance through a material (contact resistance)
• DIN EN 1149-3:2004-07: Protective clothing - Electrostatic properties - Part 3: Test method for measurement of charge decay.
• DIN EN 1149-5:2018-11: Protective clothing - Electrostatic properties - Part 5: Performance requirements for material and design requirements.

Introduction

EN 1149 is a series of tests and requirements for electrostatic properties of protective clothing. Different parts are required by the different areas of application and materials.

Scope of application

This standard specifies the electrostatic requirements for electrostatically dissipative protective clothing to prevent ignitable discharges and the corresponding test methods. In flammable atmospheres enriched with oxygen, the requirements may not be met. The test method is not applicable to materials containing fibres with conductive cores. This standard is not applicable to protection against mains voltage.

Performance requirements

For homogeneous materials, the surface resistivity shall be equal to or less than 2.5x109 Ω.

Labelling

Marking shall be in accordance with EN 340 (Protective clothing - General requirements) and shall be identified by this pictogram: