Insulated safety boots: functions, features and selection guide

In industries such as power and electrical engineering, insulated safety boots are key equipment to protect workers from risks such as electric shock and static electricity. This article will deeply explore the functions and characteristics of insulated safety boots and how to choose suitable insulated safety boots to ensure the safety of workers.

Insulated protective boots are boots made of special materials that usually have high insulation and protective properties. Its main function is to protect workers’ feet from factors such as arc radiation and high temperature. In the electric power, petroleum, chemical, pharmaceutical and other industries, insulating protective boots are widely used in operations in various hazardous environments.

Insulating protective boots are used in a wide range of scenarios, including power facility maintenance, petrochemical production, pharmaceutical production and other fields. In these scenarios, workers need to work in dangerous environments such as high voltage, high temperature, flammable and explosive environments, and insulated protective boots can effectively protect their feet from injury. In addition, insulated protective boots can also play a more important role in some special environments, such as walking for a long time, bending the knees, etc. At this time, other special-purpose boots are generally worn, such as mountaineering boots, cycling boots, etc.

1.The function of insulated safety boots:

• Isolate current: Insulated safety boots use special insulating materials that can effectively isolate current and prevent current from being conducted through the soles to the ground or the worker’s body, thereby reducing the risk of electric shock.
• Anti-static: Insulated safety boots have anti-static function, which can help workers eliminate static electricity, prevent the accumulation and discharge of static electricity, and thus avoid accidents caused by static electricity.
• Provide comfort and protection: Insulated safety boots are not only anti-shock and anti-static, they also provide comfort and protection. They usually use special designs and materials such as waterproof, breathable, and wear-resistant to ensure that workers remain comfortable and safe at work.

2.Characteristics of insulated safety boots:

• Insulating materials: Insulated safety boots are usually made of rubber, polymer or other insulating materials. These materials have good insulating properties and can effectively isolate current and static electricity.
• Waterproof and abrasion resistance: Insulated safety boots often encounter wet and dirty working environments, so having good waterproof and abrasion resistance is a very important feature. These features ensure the longevity of the boots and keep workers’ feet dry and comfortable.
• Anti-slip soles: The soles of insulated safety boots usually have anti-slip features to ensure workers’ stability and firmness on slippery surfaces to avoid slipping and injuries.
• Comply with standards: When choosing insulated safety boots, you should ensure that they comply with relevant national or regional standards. These standards ensure the quality, performance and reliability of insulated safety boots to keep workers safe.

3.Insulation grade classification of insulating safety shoes

Good insulation is the most basic and reliable way to prevent electric shock to the human body. Insulated safety shoes protect your feet from electric shock caused by current contact. But if the grade of the insulating material you use is not compatible with the electrical power, the insulating material may be broken down and lose its insulating properties, and it will completely lose its electrical insulation. Therefore, for your safety, the insulated safety shoes you choose must match the voltage level. Therefore, if you need to use insulating safety shoes, you must first understand the insulation level.

• Insulation temperature class: Class A, Class E, Class B, Class F, Class H, Class C, Class N, Class R
• Maximum allowed temperature: 105 120 130 155 180 200 220 240 (℃)
• Limit value of winding temperature rise: 60 75 80 105 125 135 150 170 (K)
• Reference performance temperature: 80 95 100 120 145 155 170 190 (℃)

1. According to the upper material: electrically insulating leather shoes, electrically insulating cloth-covered rubber shoes, electrically insulating full rubber shoes, electrically insulating full polymer material shoes.
2. According to the height of the upper, they are divided into: low-top electrically insulating shoes, high-waist electrically insulating shoes, half-tube electrically insulating boots, and high-top electrically insulating boots.
3. According to the test voltage: 6KV electrically insulated leather shoes, 5KV electrically insulated cloth rubber shoes, 15KV electrically insulated cloth rubber shoes, 6KV electrically insulated full rubber boots, 10KV electrically insulated full rubber boots, 15kV electrically insulated full rubber boots, 20kV electrically insulated All-rubber boots, 30kV electrically insulated all-rubber boots, etc.

Often some managers with insufficient electrical knowledge mistakenly believe that the application scope of 6KV insulated leather shoes or 5KV cloth insulated safety shoes is in 6KV or 5KV environments. This is very wrong.

4.How to choose suitable insulated safety boots:

Choose the insulation level according to the working environment:

Different working environments require different levels of insulating safety boots. According to the voltage level and special requirements of the workplace, select the insulation level that meets the requirements.

Consider comfort and protection:

When choosing the right insulated safety boots, consider comfort and protection in addition to insulation performance. Make sure the boots are breathable and have a comfortable lining to keep your feet dry and comfortable during extended wear. Also, choose boots with adequate protection, such as insulated safety boots with bump and puncture resistance, for extra protection.

Boot Size and Fit:

Choosing the right boot size is important to ensure adequate toe room and comfortable foot support. When trying on boots, pay attention to the fit of your feet to avoid wearing them too tight or too loose.

Anti-slip properties:

When choosing insulated safety boots, pay attention to the anti-slip properties of the soles. The soles should have good traction and provide stability and firmness on slippery or unstable surfaces to avoid slipping and injury.

Abrasion resistance and durability:

Since insulated safety boots are often used in harsh work environments, abrasion resistance and durability are also factors to consider. Choose boots with wear-resistant materials and construction to ensure longevity and performance stability.

Comprehensive consideration of price and brand:

The price and brand of insulated safety boots are also one of the reference factors for selection. Choose the insulated safety boots that suit you based on your personal budget and brand preference, as well as the balance between price and quality.

5.Precautions for insulated shoes

• If there is a risk of electric shock, insulating shoes should be worn and used as auxiliary safety equipment and labor protection shoes during work. When using it, you must strictly abide by the electrical safety engineering regulations.

• Insulated shoes cannot guarantee 100% protection against electric shock, and additional testing to avoid this hazard is necessary. Such tests, along with the additional tests mentioned below, should form part of the routine hazard assessment procedure.

• The electrical performance of the shoes should meet the requirements at all times during the period of use.

• The level of protection during use may be affected by damage caused by nicks, cuts, abrasions or chemical contamination of the shoes. They should be inspected regularly. Damaged shoes can no longer be used as electrically insulating shoes.

• It is prohibited to wear the shoes in places where the sole materials are contaminated, such as chemicals, etc. Entering such dangerous areas will affect the electrical properties of the shoes.

• When wearing, it is recommended that the user establish a suitable means for checking and testing the electrical insulation performance of the shoes.

• When wearing insulated shoes, the working environment should keep the uppers dry.

• The withstand voltage and leakage current values of electrically insulating shoes that have undergone preventive inspections should meet the standard requirements. The validity period of each preventive inspection result shall not exceed 6 months.

• Products should be strictly prohibited from coming into contact with sharp objects, high temperatures, acids, alkalis or other corrosive items. During storage, they should be stored in a dry and ventilated warehouse to prevent mildew and should be stacked more than 0.2m away from the ground and walls.

•  The storage period is 24 months. Products exceeding 24 months must undergo preventive electrical performance inspection one by one. Only after passing the inspection can they be used as electrically insulated shoes.

• Pay attention to the maintenance of the leather upper of insulated safety shoes and polish the shoes frequently. The wiping method is to 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 surface of the shoes, wait for a while and then wipe.

• Insulating safety shoes cannot come into contact with oil, acid, alkali and sharp substances to prevent corrosion, deformation and damage.

• When wearing colored insulated safety shoes, special attention should be paid not to touch sewage, dirt, tea stains, cola, etc., otherwise stains will be left and the safety shoes will be damaged.

• When insulated safety shoes become wet or suffer from foot sweat, they are prone to salt frost. You can use gauze or cotton dipped in a small amount of warm water to wipe off the white salt frost on the upper surface of the shoes. Place the shoes in a ventilated place to dry, and then Wipe it clean with shoe polish and repeat it several times to restore it to its original state.

• When placing insulated safety shoes, the leather shoes should be kept clean, dry, well polished, and placed flat naturally. After a period of storage, the leather shoes should be ventilated, cool and dry frequently, and the shoe polish should be re-wiped to prevent mildew.

Insulated safety shoes are important protective equipment for workers to ensure safety and health during production and labor. They play an important role in preventing and mitigating work-related injuries and occupational hazards. In order to avoid accidents caused by hidden dangers and for the safe production of enterprises, workers must use insulating safety shoes in accordance with national requirements.

So how to detect insulated safety shoes?

6.How to detect insulating safety shoes:

1.The product should undergo a preventive test after being worn for 6 months. Products that fail due to puncture by sharp objects should no longer be used as insulating safety shoes.

2.For preventive testing, for 6KV leather insulated safety shoes, 5KV voltage testing should be used. 5KV cloth-covered rubber shoes are tested using 3.5KV.

3.Corrosion degree. According to different operations, the wear and tear of insulated labor protection shoes can be divided into heavy corrosion, medium corrosion and light corrosion. Its corrosion degree can reflect the environment where the operation is located and the user’s usage.

4.Durable performance. Electrically insulated labor protection shoes include four categories: electrically insulated leather shoes, plastic shoes, rubber-covered rubber shoes, and cloth-covered rubber shoes. According to its service life, it is divided into non-durable, medium-durable and durable. Durability can reflect the quality of the material of the insulated labor protection shoes.

5.According to the degree of reduction of the protective function of insulated labor protection shoes, it can be divided into vulnerable loss, moderate loss and scrap. Loss can reflect the protective performance of insulated labor protection shoes.

7.The difference between anti-static shoes and insulating shoes

Differences in materials:

Anti-static shoes are made of anti-static materials, while insulating shoes are made of insulating materials that cannot conduct electricity.

Differences in application fields:

Anti-static shoes are generally used in electronic equipment, semiconductors, integrated electronics, laboratories, pharmaceutical factories and other fields.

Electrically insulating leather shoes and cloth-covered electrically insulating shoes with a withstand voltage of less than 15KV are used in operating environments with a power frequency (50-60F) below 1000V, while electrically insulating rubber shoes with a withstand voltage of more than 15KV are suitable for operating environments with a power frequency of more than 1000V.

The difference in resistor size:

The resistance range of anti-static shoes is generally between 106Ω and 1012Ω, while the resistance range of insulating shoes is generally above 1012Ω.

Differences in functions:

Anti-static safety shoes mainly use the anti-static material on the soles to conduct the excess charge of the human body to the earth to avoid electrostatic discharge due to charge accumulation, thereby eliminating the static electricity of the human body.

Insulated safety shoes use soles made of non-conductive insulating materials to isolate the human body from the earth, so that even if the human body comes into contact with a conductive body, there will be no accidents due to current flowing into the ground through the body.

Generally speaking, anti-static shoes are a kind of conductive shoes, although the conductive function is relatively weak. Insulating shoes reduce the risk of electric shock to workers by isolating the human body from conductors.

Insulating safety boots play a vital role in industries such as power and electrical engineering, effectively protecting workers from risks such as electric shock and static electricity. When choosing insulated safety boots, you should consider its insulation performance, comfort, protection, anti-slip performance, wear resistance and durability, and choose the right one based on the needs of the working environment and personal preferences, taking into account price and brand. Insulated safety boots. Through the correct selection and use of insulated safety boots, the safety and health of workers can be protected to the greatest extent.