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EspañolIn electrical maintenance, equipment installation and other operating scenarios, the risk of electric shock is always there, and the Insulated screwdriver set is the key tool to resist this risk. It is not only an "upgraded version" of an ordinary screwdriver, but also carries the important mission of protecting the life safety of operators. A professional Insulated screwdriver set can form a reliable insulation barrier in a high-voltage environment and reduce the probability of accidental electric shock, so it has become a must-have equipment for professionals such as electricians and electronic engineers.
Insulation performance: a security password from material to certification
The core competitiveness of the Insulated screwdriver set lies in its insulation performance, which is determined by material selection and industry certification. The insulated handle is usually made of polymer materials such as glass fiber reinforced nylon or epoxy resin. These materials not only have excellent insulation resistance (generally required to be ≥10¹⁰Ω), but also can withstand extreme temperatures from -40℃ to 120℃ to meet the needs of different working environments.
International certification standards for insulated tools are extremely strict, of which IEC 60900 and UL 1000 are the two most recognized standards. Screwdrivers that pass IEC 60900 certification must undergo a 10,000V high-voltage test for 1 minute without breakdown, and the leakage current is ≤50μA; UL 1000 focuses more on the North American market and has additional requirements for the mechanical strength and aging resistance of the insulation layer. In the domestic market, products that meet the GB/T 10685 standard also have reliable insulation guarantees, and consumers can quickly identify their safety levels by checking the certification mark on the tool handle.
Set classification: "Professional combination" matched by scene
Insulated screwdriver set is not a "one-size-fits-all" general product, but is subdivided into multiple categories according to different operating scenarios to meet diverse needs.
Household/light industrial sets usually contain 6-8 screwdrivers, covering common specifications such as cross (PH1, PH2) and flat (6mm, 8mm), with an insulation level of 1000V, suitable for low-voltage scenarios such as home circuit maintenance and small appliance installation. The handle design focuses more on grip comfort, and mostly uses anti-slip patterns and ergonomic shapes to reduce fatigue from long-term operation.
Industrial-grade high-voltage sets are aimed at high-voltage environments such as power systems and substations. The insulation level can reach 10000V, including more specifications (such as plum head, hexagon socket, etc.). Some products are also equipped with insulating sleeves and extension rods to meet the operation requirements of deep holes or narrow spaces. The blades of this type of set are mostly made of S2 alloy steel. After quenching, the hardness can reach HRC58-62. It has both wear resistance and impact resistance and can cope with high-intensity operations.
Purchase tips: Avoid the three traps of "pseudo-insulation"
The quality of insulated screwdriver sets on the market varies. When purchasing, you need to be alert to the following misunderstandings to avoid buying "pseudo-insulation" products:
Beware of products with only an insulating layer on the surface. Such tools seem to have insulation functions, but the coating is easy to wear and fall off, exposing the internal conductive material, which poses a great safety hazard. The insulation layer of high-quality products should be integrally molded with the handle and have a uniform thickness (at least 3mm), which can be identified by observing whether there is stratification in the cross section.
Do not ignore the connection strength between the blade and the handle. The connection between the blade and the handle of the insulated screwdriver is a force concentration point. If glue is used for bonding or simple crimping, it may fall off when a high-torque screw is turned. It is recommended to choose products that are fixed by rivets or integral injection molding to ensure that the connection strength meets the standard of "10 times the rated torque without loosening" in IEC 60900.
Check the authenticity of the certification. Regular manufacturers will mark the complete certification number on the product packaging or handle, and consumers can check and verify it through the official website. Products without certification marks, blurred marks or no information can be found, even if the price is low, must not be purchased.
Maintenance and maintenance: "safety rules" to extend life
The maintenance of the insulated screwdriver set is not only related to the service life, but also directly affects the stability of the insulation performance. After use, the oil and metal debris on the blade should be cleaned in time to avoid the adhesion of conductive impurities; if the handle is contaminated with dust or liquid, it can be wiped with a dry cloth, and organic solvents such as alcohol and gasoline should not be used to clean it to prevent corrosion of the insulation layer.
When storing, it should be kept away from high temperature, humidity and strong ultraviolet environments to avoid aging and cracking of the insulation material. It is recommended to put the set in a dedicated insulation tool box and store it separately from other metal tools to prevent accidental collisions from damaging the insulation layer. Insulated tools need to be tested for insulation performance regularly (usually every 12 months) and can only be used after passing the test of a professional organization. Once the handle is cracked, the blade is deformed or the insulation layer is damaged, it should be scrapped and replaced immediately.
The insulated screwdriver set is the "last line of defense" in electrical operations, and its quality and performance are directly related to the safety of operators. Choose a set that meets international standards, is suitable for the working scenario, and performs daily maintenance to ensure that this "invisible shield" always works.
