Cowhide Gloves These are commonly used safety devices and important insulating protective equipment in power operation, maintenance, and maintenance testing. With the development of the power industry and the popularization of power operation technology, more stringent requirements have been put forward for the safety performance of cowhide gloves.

What should be noted when using cowhide gloves?

1. Wear cowhide gloves in a dry state

Wearing them in a dry state is a matter that users need to pay attention to. This is because if the glove contains a certain amount of moisture, the volume resistance and surface resistance of the insulator will drop significantly. Water is a conductor, and due to the presence of water, the insulation performance of the insulator will be significantly reduced or destroyed. In addition, there are many impurities in the water, and under certain conditions (such as heat, light, electricity, etc.), chemical changes will occur, forming a conductor, damaging the insulation performance. Therefore, keeping the cowhide gloves dry can greatly improve safety performance.

2. What is the most important indicator determining the quality of cowhide gloves?

The purpose of wearing insulating gloves is to prevent electric shock injury, mainly because the human body conducts current. Therefore, the quality of the insulating glove's protection mainly depends on the magnitude of the leakage current passing through under a certain voltage. Leakage current within the safe current value is safe; otherwise, it is unsafe. Applying a certain voltage will not cause penetration, but excessive leakage current will cause harm to the human body.

3. Preventive tests should be conducted on cowhide gloves

Preventive testing is a strict regulation in the power industry to ensure personal safety. Insulating gloves have a relatively long service life, and changes caused by aging or storage conditions over a long period of time. From the perspective of safety first, it is necessary for users to conduct preventive tests before use. Cowhide gloves that have exceeded their shelf life must pass preventive tests before use.

4. Wearing cowhide gloves What should be noted during outdoor operations in rainy weather?

During electrical work, sometimes the labor intensity will increase or the weather temperature will increase, and sometimes the limbs may accidentally touch walls or grounded equipment. Leakage current will cause electric shock, so even when wearing insulating boots, it is necessary to prevent other parts of the limbs from grounding during work. During the rainy season, wear insulating boots or cowhide gloves, but necessary rain gear should be available to prevent electric shock to the limbs due to the conduction of moisture in the insulation protection area.

5. What is the difference between electric work cowhide gloves and rubber high-voltage cowhide gloves?

Electric work cowhide gloves are allowed for electrical work within different types of operating voltage ranges. High-voltage and low-voltage cowhide gloves are auxiliary safety devices and are not allowed for electrical work. After purchasing electric work cowhide gloves, users can conduct regular experimental inspections according to different models. Whether it is qualified or not, whether the leakage current is below 16mA (410mm length specification).

7. How is the minimum withstand voltage of cowhide gloves defined?

Minimum withstand voltage, that is, after rising to 30kV at the same voltage rise rate, the voltage is immediately reduced and the power is cut off. General testing (factory testing requirements) is tested for 1 minute under the verification voltage of various models (no need for 16 hours of soaking). Brand cowhide glove factories test for 3 minutes, high and low voltage cowhide gloves, no pre-soaking is required, and there is no test of the minimum withstand voltage that is much higher than the test voltage.

8. Why are cracks found in some cowhide gloves during testing?

When conducting high-voltage tests on electric work insulating gloves, if the water injection height is not standard or the glove cuffs are not dry, an arc will be generated between the two levels under high voltage, and discharge will occur in the air, producing a crackling sound. At the same time, ionization will occur in the air, transferring the oxygen in the air to ozone. The increase in ozone concentration will cause great oxidative damage to the rubber, destroying the rubber cracks, and the high-voltage test will damage the rubber. To learn more Nanyang Gloves, Industrial Gloves For more information, please follow us.

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