Electric Arc
Electro-technical work is carried out worldwide every day at the risk of triggering an electric arc either by human failure or due to a technical reason.
Its Effects
Depending on power and combustion period of an electric arc, different physical effects can arise which result from the high temperature range. Temperature up to 10,000º C are possible in an electric arc, the foot of which can even be up to 20,000º C.
We at Tara Group have carried out in-depth study regarding electric arc hazards at various work places. Based on the findings, our R&D Department has designed personal protective garment, which confirms to the guidelines of:-
- International social security association (ISSA), which follows the requirement of the "European directive for personal protective equipment" (89/686/EEC/1/).
- American occupational safety and hazard association (OSHA 29 CFR-1910-269).
- National fire protection agency (NFPA 70 E 3-3.9.3).
Selection of Appropriate Flame Retardant Fabric
Safe™ PYROVATEX® 100% Cotton Flame Retardant fabric when exposed to flame at such temperatures forms a black carbon char, which does not drip, melt or support burning and also acts as a heat shield. Besides this fabric also has a very high TPP (Thermal Protective Performance) value. This value signifies how well a fabric protects against burns that may occur by transfer heat even if the fabric protects the skin from the flames.
National Fire Protection Agency (NFPA) has categorized the protection level required against arc flash as hazard risk category (HRC) 0 to 4. Whereas HRC 1 indicates ATPV of 5cal/cm2 HRC 4 indicates ATPV of 40cal/cm2. We at Tara Group have designed garments offering protection between 5cal/cm2 to 25cal/cm2 in other words, our garments offer protection for Hazard Risk Categories 0-3 as per NFPA 70E.
Safe™ PYROVATEX® Arc Flash Protective Clothing
Considering a high intensity of hazard in case of an electric arc flash we have designed this garment using 2 layers of 350gm 100% cotton flame retardant fabric and stitched with Kevlar® thread. The inner layer of the fabric is fluorescent orange and the outer layer dark navy so that if the upper layer is damaged at any place and the inner layer is exposed, it becomes easily visible and the garment can be replaced to avoid risk to the life of the user. |
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The head is the most vulnerable part of the body in case of an electiric arc accident and needs maximum protection. We have designed the hood with a double layer of 350 gsm 100% cotton flame retardant fabric using a wide viewing face shield with ATPV rating as per HRC 3 of NFPA 70E. |
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