PG cable glands, also known as Panzergewinde (German for armored thread) cable glands, are widely used in electrical and electronic installations to secure and seal cables entering equipment or enclosures. These cable glands provide a reliable and watertight connection, protecting the cables from dust, moisture, and other environmental factors. The term "PG" stands for the metric screw thread used in these glands.
The PG cable gland consists of several components designed to ensure a secure and efficient cable entry point. The main parts of a typical PG cable gland include:
Gland Body: It is the main body of the cable gland, typically made of brass, stainless steel, or plastic. The gland body has a threaded end that allows it to be screwed into a pre-drilled hole in the equipment or enclosure.
Locknut: This component is used to secure the cable gland to the equipment or enclosure. It is tightened against the gland body to create a firm connection and prevent the gland from loosening over time.
Sealing Washer/O-Ring: The sealing washer or O-ring is placed between the gland body and the equipment or enclosure. It provides a watertight seal, preventing the ingress of liquids or particles.
Clamping Insert: The clamping insert is placed inside the gland body and provides a secure grip on the cable. It typically consists of several individual fingers or serrations that hold the cable in place and prevent it from being pulled out.
Gland Nut: The gland nut is screwed onto the threaded end of the gland body and compresses the clamping insert, securing the cable in position. It is usually hexagonal in shape to allow for easy tightening with a wrench or spanner.
PG cable glands are available in various sizes to accommodate different cable diameters. Each size is designated by a specific PG number, such as PG7, PG9, PG11, and so on. The corresponding PG number indicates the outer diameter of the cable gland and the cable range it can accommodate.
These cable glands are commonly used in industrial applications, including machinery, automation systems, control panels, and electrical enclosures. They are known for their robustness, reliability, and resistance to environmental conditions. PG cable glands are particularly suitable for applications where a high degree of protection against moisture and dust is required.
In summary, PG cable glands are a type of cable management solution that provides secure cable entry points while maintaining a watertight seal. Their robust design and effectiveness in protecting cables make them a popular choice in various industrial settings.