Protective clothing – Electrostatic properties – Part 5: Material performance and design requirements. Equivalence with EN 1149-2018.
This standard specifies the material and design requirements for static dissipative protective clothing, excluding protective gloves and footwear that are separated from the garment.
PRETREATMENT: According to manufacturer’s instructions or by default 5 cleaning cycles
CONDITIONING: minimum 24 h at 23 ± 1 ºC with a relative humidity of 25 ± 5 %
| TEST METHOD | TEST STANDARD | DESCRIPTION | REQUIREMENTS |
| SURFACE RESISTIVITY | EN 1149-1 | Pre-treated fabric. The sample is placed on an insulating base plate and a set of electrodes are placed on the sample and direct current is applied to them , thus measuring the resistance of the fabric. | Geometric mean of surface resistance ≤ 2.5 10 9 Ω |
| LOAD DISCIPLING | EN 1149-3
Method 2 |
Pre-treated fabric.
A field electrode is placed under the sample with no sample-electrode contact. The fabric is induction loaded, and the load is measured, the field reduction is used to determine the semi-dissipation time and the coefficient of protection. |
-Any geometric mean of t50 < 4 s according to method 2.
or -Arithmetic mean of S > 0.2 according to method 2. |
| ELECTROSTATIC CHARGE DISSIPATION | EN 1149-5 | Defines requirements of EN 1149-1 or EN 1149-3 method 2 | -Compliance with at least one requirement of EN 1149-1 or EN 1149-3 method 2.
– If the material contains conductive wires in a pattern of stripes or grids, the separation of these wires must be ≤ 10 mm. -If a material is made up of two or more fully bonded layers, all layers must meet the requirements, or the inner or outer surface must meet the requirements when tested as a composite material. In the event that the outer surface does not meet the requirements, the combined thickness of the non-dissipative layers may not exceed 2 mm. |
DESIGN
MARKING
