Cable glands are essential components used in electrical installations to secure and protect cables as they pass through equipment enclosures, bulkheads, or machinery. They are designed to ensure a safe connection by providing strain relief, environmental sealing, and, in some cases, electrical grounding or bonding.
Key Functions of Cable Glands
Cable Retention: Prevents cables from being pulled out of their connection points.
Environmental Protection: Provides a seal to prevent ingress of water, dust, or other contaminants.
Electrical Bonding: Ensures proper grounding or earthing, particularly for armored cables.
Fire and Explosion Protection: In hazardous environments, certain types of cable glands can prevent the passage of flames or sparks.
Types of Cable Glands
Material Types:
Plastic: Lightweight, corrosion-resistant, and cost-effective.
Metal (e.g., Brass, Stainless Steel): Durable, robust, and ideal for harsh environments.
Cable Types:
Unarmored: For standard cables.
Armored: Designed for cables with mechanical protection layers.
Ingress Protection (IP) Ratings:
IP68 or IP69-rated glands for waterproof and dustproof applications.
Explosive Atmospheres:
ATEX/IECEx-approved glands for use in hazardous zones.
Applications
Industrial automation
Renewable energy (solar panels, wind turbines)
Marine and offshore
Oil and gas industries
Telecommunications
Building management systems
Selection Criteria
When choosing a cable gland, consider:
Cable diameter and type
Ingress Protection (IP) rating
Material compatibility with the environment
Certification requirements for hazardous areas
Operating temperature range
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