Cable gland意思
"Cable gland" is a term used in the electrical and industrial sectors to describe a type of fitting used to secure and seal the ends of electrical cables or wires. Cable glands are also known as cable fittings, cable connectors, or cable entries.
They are designed to provide a secure and weather-resistant connection between a cable and an electrical device, panel, or enclosure. Cable glands can be made from various materials such as metal, plastic, or composite materials, and they come in different sizes and types to accommodate cables of various diameters and insulation types.
Cable glands typically consist of a body, a gland nut, and sometimes additional components such as washers, seals, and lockwashers. The body is the main part of the gland that the cable passes through, and it may have internal threads for the gland nut or external threads to attach directly to an electrical panel or device. The gland nut is screwed onto the body and tightened to apply pressure to the cable, holding it in place and providing a strain relief.
The purpose of a cable gland is to:
- Secure the cable: It prevents the cable from being pulled out accidentally or due to vibration.
- Seal the cable entry: It provides a barrier against dust, water, and other environmental factors, which is especially important in outdoor or industrial settings.
- Provide strain relief: It helps to absorb mechanical stress and prevent damage to the cable and connected equipment.
- Grounding: Some cable glands are designed to ensure proper grounding of the cable shield or armor.
Cable glands are used in a wide range of applications, including industrial machinery, control panels, lighting systems, and anywhere where electrical cables need to be connected and protected. They are available in standard and non-standard sizes and can be rated for different environmental conditions, such as IP (Ingress Protection) ratings for dust and water protection.