Copper flexible connectors play an important role in explosion-proof electrical appliances, and their applications and advantages are mainly reflected in the following aspects:
1、 Application scenarios
1). Electrical connections and conductive circuits
-Flexible connection of conductive components inside explosion-proof electrical appliances (such as explosion-proof switches, explosion-proof motors, explosion-proof lamps, etc.), replacing traditional rigid wires or bolted connections, suitable for vibration, thermal expansion and contraction and other working conditions.
-As a transitional connection between busbars and equipment in explosion-proof distribution boxes and explosion-proof junction boxes, it reduces mechanical stress.
2). Grounding and anti-static measures
-As a grounding soft connector, ensure reliable grounding of explosion-proof electrical enclosures to avoid the risk of explosion caused by static electricity accumulation (especially in flammable and explosive environments such as petroleum, chemical, mining, etc.).
3). Compensation displacement and shock absorption
-During the installation or operation of explosion-proof electrical appliances, displacement may occur due to vibration and impact. The flexibility of copper flexible connections can effectively absorb displacement and avoid loose or broken connection points.
2、 Core advantages
1). Excellent conductivity and low resistance
-Copper's conductivity is second only to silver, ensuring low heat generation during high current transmission and reducing the risk of local overheating (in line with the strict requirements of explosion-proof electrical appliances for temperature rise).
2). Flexibility and fatigue resistance
-The multi strand thin copper wire weaving or laminated structure endows it with high flexibility and can be frequently bent without breaking, making it suitable for dynamic environments such as mobile explosion-proof equipment.
3). Corrosion resistance and explosion-proof compatibility
-The surface can be plated with tin or nickel to enhance oxidation and corrosion resistance, and adapt to humid and corrosive environments.
-Non sparking design to avoid arcing when connections become loose, in compliance with explosion-proof standards such as IECEx and ATEX.
4). Mechanical strength and reliability
-To withstand high tension and vibration, avoid connection failure caused by mechanical stress, and reduce the risk of explosion caused by electrical faults in explosion-proof electrical appliances.
5). Easy installation and simple maintenance
-Flexible design facilitates wiring in narrow spaces, with both ends fixed by bolts, welding, or crimping, simplifying the installation process.
3、 Typical Example of Explosion proof Electrical Appliances
-Explosion proof motor: The soft connection between the stator and terminals reduces vibration conduction.
-Explosion proof junction box: Flexible connection of busbar compensates for installation errors.
-Explosion proof lighting fixtures: Soft grounding connection between internal circuit and shell.
4、 Material selection and standards
-Material: T2 copper or tin plated copper is usually used, and copper alloys (such as beryllium copper for enhanced elasticity) can be selected for high demand scenarios.
-Standard: It must comply with explosion-proof electrical specifications such as GB 3836 (China) and ATEX (EU) to ensure insulation, voltage resistance, and mechanical performance.
