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The difference between anti-static safety shoes and electrical insulation safety shoes!

With the development of modern industry, the working environment faced by workers is becoming more and more strict and uncertain. At this time, the use of labor protection products is more important. Taking safety shoes as an example, they can effectively provide protection for workers’ feet, and provide certain protection against different hazards in different working environments to avoid unnecessary injuries. Therefore, safety shoes are an essential part of workers’ daily work. Many people confuse anti-static safety shoes with electrical insulation safety shoes when purchasing safety shoes. This is very dangerous and can easily cause accidents. Therefore, we need to understand the difference between these two types of safety shoes.

Static electricity is an objective natural phenomenon that can be produced in many ways, such as contact, friction, induction between electrical appliances, etc. Static electricity is characterized by long-term accumulation, high voltage, low power, low current and short action time. The action of the human body or the contact, separation, friction or induction with other objects can generate thousands of volts or even tens of thousands of volts of static electricity. Static electricity can cause serious harm in many fields, such as electronics industry, semiconductor, petroleum industry, weapon industry, textile industry, rubber industry, and aviation and military fields. Friction electrification and human body static electricity are two major hazards in the electronics industry, which often cause unstable operation or even damage to electronic and electrical products. Because of this, anti-static technology is widely used in the materials of labor protection products in various industries, mainly through the following three ways: ① Form a conductive layer on the surface of the material, thereby reducing its surface resistivity, so that the static charge that has been generated can be quickly Leakage; ② endow the surface of the material with a certain degree of lubricity and reduce the coefficient of friction, thereby inhibiting and reducing the generation of static charge; ③ build a conduction path so that charged particles can come into contact.

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As the name suggests, anti-static shoes are shoes made of anti-static materials, which are generally used in electronic equipment, semiconductors, integrated electronic laboratories, pharmaceutical factories and other fields. The resistance range of anti-static is between 106 ohms and 1100 ohms. Anti-static safety shoes can be anti-static, that is, through the anti-static material in the shoes, the excess charge of the human body is introduced into the earth, so as to avoid the phenomenon of electrostatic discharge caused by the accumulation of charges, thereby eliminating the phenomenon of human body static electricity. We can regard anti-static shoes as a kind of conductive shoes, which lead static electricity into the earth.

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Insulation, a relative concept, refers to the use of non-conductive substances to isolate or wrap charged objects to protect against electric shock. It can be seen that anti-static is to lead out current, while electrical insulation is to isolate current. Good insulation can ensure the safe operation of electrical equipment and circuits, and prevent personal electric shock accidents. Common insulators include ceramics, rubber, dry cloth, and dry wood.

Insulated work boots are made of non-conductive insulating materials, and the surface materials are also different. Generally speaking, there are electrically insulated shoes and cloth-covered electrically insulated shoes. Electrically insulating rubber shoes with a withstand voltage of more than 15 kilowatts are suitable for working environments of more than one kilowatt, and the resistance range is generally more than 1000 ohms. Insulating shoes and electrician shoes should be selected according to the level of voltage used and different protection conditions. Because all kinds of electrical equipment are divided into high and low voltage, we should choose appropriate insulating shoes according to the electrical equipment being used. The principle of insulated shoes is to separate life from the earth by using soles made of non-conductive insulating materials. Even if there is contact with conductive objects, there will be no accidents due to current passing through the body, reducing the risk of electric shock for workers.

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Insulated shoes have very strict quality standards due to their special functions. According to the requirements of the new standard, the thickness of the outsole of electrically insulating shoes without patterns shall not be less than 4mm, and when the patterns cannot be measured, the thickness shall not be less than 6mm. In the market, the phenomenon of replacing labor insurance insulation shoes with life soles often appears. Even the thinnest part of the sole is less than 6 mm. The uppers or soles of insulated shoes purchased by enterprises should have standard numbers, insulated words and voltage values. Enterprises should also understand the qualifications of manufacturers. The length of wear marks on the outsole of electrically insulating leather shoes should not exceed 10mm; the wear loss of electrically insulating cloth shoes should not exceed 1.4cm3; The reduction is not greater than 1.9cm3.

After the insulated shoes are made, a preventive test is required. For 6KV leather insulated shoes, 5KV voltage detection should be used. 5KV cloth rubber shoes use 3.5KV detection. Implementing the new standard of GB12011-2000 is the joint responsibility of product manufacturers and users. Only by implementing the standards and grasping the requirements of the standards can the safety accidents caused by electric shocks in enterprises be reduced. The new GB12011-2000 standard for electrical insulating shoes is beneficial for manufacturers to improve product quality, for enterprise safety and production management, and to improve the safety management level and safe operation level of enterprises to prevent electric shock accidents.

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At the same time, when we purchase insulated safety shoes, there are also some points that need to be paid attention to during use:

    1. Insulating safety shoes are suitable for wearing as auxiliary safety equipment and labor protection equipment when working on electrical equipment with AC 50Hz, below 1000V or DC below 1500V. Staff use insulated leather shoes, which can be used with basic appliances to touch live parts, and can be used to protect against clicks caused by step voltage. Step voltage refers to: when electrical equipment is grounded, the maximum potential gradient direction of the ground is between two points of 0.8M Potential difference.

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  1. Be careful not to get this product damp, and it is strictly forbidden to use it after it gets wet. Once it gets wet, put it in a ventilated and cool place to dry naturally to avoid deformation and damage to the leather shoes. After the sole is pierced by foreign matter, it cannot be used as insulating leather shoes.
  1. Pay attention to the maintenance of the leather surface of the leather shoes, and polish the shoes frequently. The wiping method is: first wipe off the dust on the surface of the leather shoes with a clean soft cloth, then squeeze the shoe polish onto the cloth and apply it evenly on the upper, wait for a while (the shoe polish is slightly dry), and then wipe it off.

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  1. Insulated shoes should not be worn on rainy days, let alone washed, otherwise disconnection, degumming, discoloration, and salt frost will easily occur.
  1. Insulating shoes should not be in contact with oil, acid, alkali and sharp substances to prevent corrosion, deformation and damage.
  2. When wearing colored leather shoes (including white), special care should be taken not to touch sewage, dirt, tea stains, cola, etc., otherwise stains will be left and the original color of the leather shoes will be damaged.

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  1. It is normal for leather shoes to have slight wrinkles and slight deformation after wearing.
  2. Insulated safety footwearare prone to salt and frost after being wet or sweaty. In case of salt frost phenomenon, use gauze or cotton with a small amount of warm water to wipe off the white salt frost on the upper, put the shoes in a ventilated place to dry, and then wipe them with shoe polish. Repeat several times to restore the original state. So keep your shoes dry.
  3. When storing insulated shoes, keep the leather shoes clean, dry, and with good shoe polish, and lay them flat naturally: after a period of storage (especially in the rainy season), keep the leather shoes ventilated, cool and dry, and re-wipe the shoe polish to prevent mildew.


I hope that after reading this article, everyone can learn to distinguish between anti-static shoes and insulated shoes, and be able to choose the most suitable shoes according to their actual needs, so as to better protect themselves at work.