PG Cable Glands: Thread Sizes, Materials, and Selection Tips

Cable glands are devices used to connect and secure the ends of cables to equipment. They are made of various materials, with steel, brass, or aluminum used for industrial applications.

Connectors designed to withstand dripping water or water pressure utilize synthetic rubber or other types of elastomeric seals. Some types of cable glands also prevent flammable gases from entering equipment enclosures, making them particularly suitable for electrical equipment in hazardous areas.

Currently, there are at least three thread standards:

• Panzergewinde (PG standard)
• Metric thread
• Imperial pipe thread (Imperial system)

This article will focus on the types, materials, functional applications, and selection of appropriate cable glands for PG cables.

What is a Panzergewinde cable gland?

A PG cable connector, also known as a PG cable gland, is a mechanical device used to secure, protect, and seal cables as they enter electrical enclosures or equipment. It is designed to provide strain relief while preventing dust, moisture, and other environmental contaminants from entering the enclosure.

A standard PG cable gland consists of a threaded body, a locking nut, and a sealing insert that grips the cable firmly in place. The term “PG” originates from the German standard Panzergewinde, which refers to an armored thread type commonly used in electrical and industrial installations. Although newer metric thread standards are now widely adopted, PG cable glands remain in use across many applications due to their reliability and compatibility with existing systems.

PG Cable Connector User Guide

Types of PG Cable Glands

PG cable connectors come in various types to meet diverse cable configurations and installation requirements:

Standard PG Cable Glands: These are the most common type, designed for general applications to securely seal standard cables.

Double-Crimped PG Cable Glands: Also known as EMC cable glands, these connectors enhance protection against electromagnetic interference. They work by using a double-compression seal, sealing the cable at two points, thus reducing the likelihood of interference from external electromagnetic sources.

Armored PG Cable Glands: Designed specifically for armored cables, these cable glands feature additional clamping and sealing mechanisms to secure and protect the armor sheath.

PG cable gland size chart

PG cable gland sizes are defined by two key factors that determine proper fit and sealing performance:

1. Thread Size

The thread size is identified by the PG number, which specifies the diameter and pitch of the thread. Common PG sizes include PG7, PG9, PG11, PG13.5, PG16, and PG21, among others.

2. Cable Outer Diameter Range

Each PG size is designed to accommodate a specific range of cable outer diameters. Selecting the correct size ensures the gland can securely grip the cable while maintaining a reliable seal against dust and moisture.

Because different PG sizes support different cable diameter ranges, choosing the right combination of thread size and cable diameter is essential for proper installation and long-term performance.

How to classify cable gland  by material？

Common Uses of PG Glands

PG cable connectors are indispensable in numerous applications due to their superior functionality and reliability.

Here are some common uses of PG cable connectors:

Industrial Machinery: Protect cables in manufacturing plants and heavy machinery from environmental stressors.

Control Panels: Ensure safe and reliable cable entry for electrical panels and enclosures.

Outdoor Installations: Provide weatherproof seals for outdoor lighting systems and power distribution equipment.

Telecommunications: Maintain the integrity of cables in communication networks.

Renewable Energy Systems: Provide secure cable management for solar, wind, and other renewable energy installations.

PG cable connectors are highly adaptable and suitable for various industries, from construction to telecommunications, making them an essential and critical component in electrical engineering.

How to choose the right PG cable gland?

Choosing the right PG cable connector requires evaluating several factors to ensure compatibility and efficiency. Here’s a step-by-step guide:

Assess cable diameter: Use the PG cable connector size chart to determine the appropriate size.

Consider environmental conditions: For outdoor or harsh environments, prioritize connectors with higher IP protection ratings.

Matching material requirements: Select PG cable connectors made of brass, plastic, or stainless steel based on durability requirements.

Specific application requirements: Ensure the connector meets project-specific requirements, such as waterproofing or flame retardancy.

Check standard compliance: Select connectors with an IP54 or higher protection rating for reliable protection.

Choose Hoonsun Cable Gland’s high-quality PG cable connectors to ensure superior performance and lasting durability..

conclusion

PG cable glands are widely used in cable connections for distribution cabinets, motors, and industrial control equipment, and are key components ensuring the safe and stable operation of electrical systems. Choosing the right PG cable gland is crucial for ensuring the safety and efficiency of electrical projects.

Understanding the applications, dimensions, and IP protection ratings of PG cable glands will help you make informed decisions. For high-quality PG cable glands and professional guidance, trust Hoonsun cable gland. Contact us today to learn how our products can enhance your electrical projects.

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