Do You Know The Electrical Properties Of Protective Shoes?

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< p > electrical performance protection < a href= "http://www.91se91.com/news/index_x.asp" > shoes < /a > including anti-static shoes, conductive shoes and electric insulation shoes, can prevent electrostatic injury and electric shock injury.

It is also a protective footwear used for protecting feet in personal protective equipment.

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< p > the harm of static electricity to human body < /p >

< p > electrostatic injury to the human body is caused by psychological barriers, resulting in fear, resulting in accidents, but also due to electrostatic shocks cause skin burns and dermatitis.

The main hazard of static electricity is that inflammable and explosive accidents occur in the industry, thus endangering the life of the operators and causing heavy losses to the production facilities.

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< p > electric shock injury is a common industrial accident. It can be classified as contact electrical injury and non-contact electrical injury.

The former is mainly current injury, which can destroy the internal tissues of the human body, such as heart, respiratory system, nervous system, etc.

Light people have a sense of acupuncture, a sense of attack, trembling, spasticity, high blood pressure, irregular heart rate until coma. Severe cases can cause ventricular fibrillation, cardiac arrest, respiratory arrest and death.

The latter is mainly electric arc injury, which is manifested by electric imprinting, electric burn and skin carbonization. The serious ones can be deeply involved in muscles, bones and internal organs.

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< p > electrophysiologic study showed that the average age of human perception is 1.1mA for adult males and 0.7mA for adult females. The average age of adult males is 16mA and that of adult women is 10.5mA.

When the electric shock current is greater than the current, the electric shock can not take the initiative to get rid of the power supply. If there is no external help, the electric shock time will be prolonged and the risk of death will occur.

The hands and feet are the most vulnerable parts of electric current passing through the human body.

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< p > classification of electrical property protective footwear < /p >

< p > anti-static shoes and conductive shoes can be divided into leather shoes and cloth soles shoes according to the material. Leather shoes can be classified into adhesive, injection and molding according to the manufacturing process.

Electrical insulating shoes can be classified into leather shoes, cloth rubber shoes, rubber faced rubber shoes and plastic shoes according to the material.

Leather shoes can be classified into adhesive, molding, injection and thread sewing according to the manufacturing process.

Anti static shoes can eliminate the protective shoes of < a href= "http://www.91se91.com/news/index_c.asp" > electrostatic accumulation of human body < /a >, and can prevent electric shock of power supply below 250V.

Conductive shoes have good electrical conductivity and can eliminate static electricity accumulation in a short time. They can only be used in protective shoes without electric shock.

Electric insulation shoes are protective shoes that can insulate people's feet and live objects and prevent electric shock.

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< p > technical requirements for electrical performance protective footwear < /p >

< p > anti static shoes and conductive shoes, according to GB4385-1995's technical requirements for anti static shoes and conductive shoes, the resistance ranges are 100k to 1000M and not more than 100k.

Among them, leather shoes should conform to the GB1002-1005 regulations, and the cloth shoe soles should conform to the HG/T2495 regulations.

The main technical properties of antistatic shoes and conductive shoes are electrical properties, including the wear of outsole, the adhesion strength of the surround and upper, the folding of the sole, the abrasion of the sole, and the peeling strength of the shoes.

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< p > < a href= "http://cailiao.sjfzxm.com/" > electrical insulation shoes < /a > shall comply with GB12011-2000 general rules for electrical insulation shoes.

The electrical properties of electrically insulating leather shoes and electrically insulating cloth shoes are as follows: when leakage current is 0.3mA/kV, the requirements of Table 1 should be satisfied.

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The electrical properties of P > electric insulating rubber boots and electrically insulated polymeric boots are: when the leakage current is 0.4mA/kV, the requirements of Table 2 should be met.

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< p > the main technical properties of electrically insulating shoes include electrical strength, adhesive strength of upper and surrounding bars, tensile properties of upper shoes, adhesion strength of upper and fabric, folding resistance of outsole, wear resistance of outsole, peeling strength of shoes, and water permeability.

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< p > the choice of protective shoes for electrical properties < /p >

< p > electrical performance protective shoes shall be equipped according to the national standard GB11651-1989 "labor protection articles selection rules" and the state labor and Economic Commission's "labor protection equipment standard (Trial)" issued in March 6, 2000 or the relevant regulations of the local industry, and it can also be selected according to the category and working environment of the protective injury. If the risk factors in the working environment are mainly electrostatic injury, the conductive shoes can be considered as the conductive ground, and the workplace with low voltage (250V) or electric shock may be considered.

Antistatic shoes and conductive shoes are mainly used in petrochemical, pharmaceutical and electronic industries.

If the main risk factor in the working environment is electric shock injury, electric insulation shoes should be used for live working.

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< p > in addition, users can choose different electrical properties of protective shoes according to the working environment.

For example, most electronic and pharmaceutical industries have a relatively clean environment and relatively low working intensity.

The petrochemical industry, including refueling (gas) stations, has a relatively complex working environment and relatively high working intensity.

Similarly, in the live working places with less than 1kV power frequency and with a relatively dry environment, electrical insulation shoes or electric insulation cloth shoes with voltage below 15kV can be used.

Electric power insulating rubber boots or electric insulation plastic boots with voltage 15kV or above can be used in workplaces with power frequency voltage above 1kV or in a humid environment.

In use, we must strictly abide by the regulations of electrical safety work regulations (DL408 and DL409).

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