How to classify anti-arc clothing
Classification of anti-arc clothing
Anti-arc clothing is divided into two categories: one is anti-arc operation clothing (long coat type), and the other is anti-arc overalls (three-tight jacket and trousers type).。
Anti-arc operating clothing (long coat type): Used during electrical operation, the protection level is ATPV≥10cal/cm2 (ATPV refers to the standard value of arc heat resistance, the same below).
Anti-arc overalls (three-tight jacket and long trousers): Used as daily work clothes, the protection level of anti-arc overalls is ATPV≥5cal/cm2.
The style and structure design of the anti-arc clothing are scientific and reasonable, which can optimize the energy of the protective function of the skin in contact with the outside world.
The long coat is designed with a placket, which is a good choice for personal protective equipment. The inner layer is buttoned and the outer layer is covered with a placket to provide double protection.There are two types of collars, “open type” and “upright type”, which are both beautiful and protect the neck.Adjustable cuff loops, which can be adjusted as needed to achieve better protection when wearing.The 3M reflective tape on the front and rear chest is both beautiful and can increase visibility in a dark operating environment and act as a warning.The front flap design of the “three-tight” jacket meets the design requirements of special labor protection clothing.The collar adopts “upright” and “open", which are adapted to different operating characteristics and environments, and can effectively protect the neck.
Zipper-style plackets are a good choice for special labor protection clothing. The double-layer cloth lining on the inside of the zipper not only plays a protective effect, but also prevents the friction between the zipper and the human body. The placket is covered on the outside to provide further double protection.
The adjustable clothes pendulum and cuff loops can be applied to different personal body types and working environments, which can play a more effective protective role.
The anti-arc clothing adopts the national standard number, has stable size, beautiful appearance, no defects and damage, exquisite craftsmanship, color fastness meets the requirements of national standards and there are no internationally banned dyes.
The anti-arc clothing HAS PASSED THE TESTING OF THE INTERNATIONAL authoritative testing center OF KINECTRICS IN Canada AND REACHED THE standard OF NFPA 70E.
At the same time, anti-arc gloves, anti-arc headgear and anti-arc shoes are used in conjunction with anti-arc clothing to protect safer!
Anti-arc clothing The new domestic power industry standard "DL-T 320-2010 General Technical requirements for Personal Arc protection Products"
Selection when ATPV value and EBT value coexist
Many friends called to ask how to choose when the ATPV value and the EBT value coexist. The technical staff of Shengou answered as follows：
The ATPV value and the EBT value are also values that measure the arc protection ability of anti-arc fabrics.
The ATPV value is based on the Stoll curve. There is a 50% chance that the energy incident on the material will cause sufficient heat to penetrate the sample to cause second-degree protection.That is, the thermal radiation protection value of the anti-arc fabric.
The EBT value is that the energy incident on the material has a 50% chance of breaking the sample.When the total area of holes in the fabric exceeds 1.6cm2, we regard it as broken.That is, the arc protection rupture value of the anti-arc fabric
When the two appear in the test report of the same anti-arc fabric, only the lowest value can be used as the grade standard of the fabric, otherwise it will bring safety risks to the user. The discussion is as follows：
1. When the ATPV value of a fabric is 8cal/cm2 and the EBT value is 20cal/cm2, when a sufficient intensity of energy is incident on the fabric, although the EBT value has withstood the test, the fabric is not damaged, but because the ATPV value is not strong enough, the incident energy has allowed enough heat to penetrate the fabric, causing an arc to the user.
2. When the ATPV value of a fabric is 20cal/cm² and the EBT value is 8cal/cm², when a sufficient intensity of energy is incident on the fabric, although the ATPV value has withstood the test, the incident energy is not enough for heat to penetrate the fabric, but because the EBT value of the fabric is not strong enough, the fabric is damaged and the user's skin is directly exposed. The energy that should have been acting on the fabric directly acts on the user's skin, causing arc radiation to the user.
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