BS EN 61482-2-2020 pdf free download.Live working — Protective clothing against the thermal hazards of an electric arc Part 2: Requirements
This part of IEC 61 482 is applicable to protective clothing used in work where there is the risk of exposure to an electric arc hazard.
This document specifies requirements and test methods applicable to materials and garments for protective clothing for electrical workers against the thermal hazards of an electric arc.
Electric shock hazard is not covered by this document, which is applicable in combination with standards covering such hazards.
Other effects than the thermal effects of an electric arc like noise, light emissions, pressure rise, hot oil, electric shock, the consequences of physical and mental shock or toxic influences are not covered by this document.
Protection of eyes, face, head, hands and feet against electric arc hazard is not covered by this document.
NOTE Requirements and tests to cover electric arc hazards to these parts of the body are under development.
Protective clothing for work intentionally using an electric arc, e.g. arc welding, plasma torch, is not covered by this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 6041 7, Graphical symbols for use on equipment (available at: http://www.graphical-symbols.info/equipment)
IEC 61 31 8, Live working – Conformity assessment applicable to tools, devices and equipment IEC 61 340-2-3:201 6, Electrostatics – Part 2-3: Methods of test for determining the resistance and resistivity of solid materials used to avoid electrostatic charge accumulation
IEC 61 477, Live working – Minimum requirements for the utilization of tools, devices and equipment
4 Requirements
4.1 General General requirements for protective clothing against the thermal hazard of an electric arc which are not specifically covered in this document shall be in accordance with ISO 1 3688.
4.2 Design requirements for protective clothing Garments protecting the upper part of the body shall have sleeves which extend to provide full coverage to the wrists and shall provide coverage up to the neck. Garments protecting the lower part of the body shall provide full coverage from the waist to the ankles.
Closures of the garment shall be designed in a way that the opening function is still present after being exposed to an arc when tested according to 5.2.5. Accessories (e.g. labels, badges, retro-reflective material) and closures used in garment construction shall not contribute to the severity of the injuries to the wearer in the event of an electric arc and related thermal exposure when the clothing is tested according to the garment test in 5.4. Separation of the closure shall not occur. Sewing thread utilized in the construction of garments shall be made of an inherently flame- resistant fibre and shall not melt when tested according to 5.2.5.
Threads in seams that have no influence on protection, e.g. hems, pocket seams, need not be flame resistant. No uncovered outside metal parts shall be permitted in the clothing. Hardware penetrating the outer material of the garment shall not be exposed to the innermost surface of the garment. All exposed parts of a garment shall be made of arc thermal protection materials. In case different materials are used for the front and back of the garment, the exact information shall be given in the instructions for use where the weakest area is located (e.g. by means of a drawing of the garment including dimensions and warning indication).
NOTE 1 The user can carry out a hazard risk assessment to determine the level of protection needed. Documents such as NFPA 70E, IEEE 1 584, ISSA Guide, and DGUV-I 203-77 help to assess hazards from the practical perspective.
For garments covering torso and arms, the front side and the sleeves all around the arms and over their complete length shall fulfil the same arc thermal protection.
For garments covering legs, the front over the complete length shall fulfil the same arc thermal protection.
For coveralls, both requirements for garments covering torso and arms and garments covering legs shall be fulfilled.
Where protection is provided by an outer two-piece suit, it shall be determined that, when correctly sized for the wearer, an overlap between the jacket and trousers remains when one standing wearer firstly fully extends both arms above the head and then bends over until the fingertips touch the ground when tested according to 5.2.1 .
If a manufacturer makes claims for a garment system as arc thermal protective clothing, then this garment system shall be tested and shall fulfil the requirements of this document.
NOTE 2 If the user is wearing garments from different manufacturers as arc thermal protective clothing, he is responsible for assessing how the assembly fulfils the requirements of this document.
4.3 General material requirements
4.3.1 Heat resistance
Materials shall not ignite, melt or shrink by more than 5 % when tested according to 5.3.1 .
4.3.2 Volume resistance
Materials of the garment using electrically conductive fibres, except for garments meeting IEC 60895, when tested according to 5.3.2, shall have a volume resistance of at least 1 0 5 Ω.
4.3.3 Limited flame spread of material
4.3.3.1 Classification of limited flame spread
All materials shall achieve a specified limited flame spread index when tested according to 5.3.3 and shall be classified according to Tables 1 to 4.
4.3.3.2 Single-layer material
If a single-layer material is used in the garment, this material shall fulfil the requirements given in Table 1 .BS EN 61482-2 pdf download.