Wednesday, June 25, 2008

what are Cable Glands ?

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Cable glands are typically single-cable bulkhead modules that allow barrier penetration while providing sealing and strain relief. They are sometime configurable to work with any cable within a specified size range. Important specifications to consider when searching for cable glands include cable diameter, mounting hole diameter, and adjustable diameter. The cable diameter specifies the diameter of the cable that can be fed through the cable gland. The mounting hole diameter refers to the diameter of the barrier or bulkhead hole into which the gland is to be installed. The adjustable diameter is the cable gland can be adjusted to fit various sizes of cable.

Common applications for cable glands include aerospace, cleanroom, fire protection, industrial, marine, panel or enclosure, power or utility, railway, and telecommunications. Aerospace cable glands are designed and rated for use on aircraft or space vehicles and/or equipment; may include applicable approvals for military and/or aircraft use.

Cleanroom cable glands are suitable for use in a cleanroom environment with the associated properties of maintaining positive pressure, prevention of dust and fluid ingress, etc. Fire protection glands are designed and rated for prevention of fire propagation across the bulkhead or barrier. Industrial glands are used in industrial environments such as factories, process plants, mills, etc.

Marine glands are designed for application on ships, offshore mining and drilling settings, or other marine applications.

Panel or enclosure cable glands are specifically designed and rated for penetration into electrical panels and/or electromechanical assembly enclosures.

Power and utility glands are designed for use with public utility equipment such as power transmission, distribution, and high voltage equipment.

Railway glands are designed for use on trains and associated installations.

Telecommunications glands are designed for used with communications cable or conduit. Choices for gland mounting include adhesive or compound, flanged or bolted, threaded or nut mount, welded, and cast. Materials of construction available for glands include aluminum, steel, stainless steel, and plastic.
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Cable glands are typically single-cable bulkhead modules that allow barrier penetration while providing sealing and strain relief. They are sometime configurable to work with any cable within a specified size range. Important specifications to consider when searching for cable glands include cable diameter, mounting hole diameter, and adjustable diameter. The cable diameter specifies the diameter of the cable that can be fed through the cable gland. The mounting hole diameter refers to the diameter of the barrier or bulkhead hole into which the gland is to be installed. The adjustable diameter is the cable gland can be adjusted to fit various sizes of cable.


Common applications for cable glands include aerospace, cleanroom, fire protection, industrial, marine, panel or enclosure, power or utility, railway, and telecommunications. Aerospace cable glands are designed and rated for use on aircraft or space vehicles and/or equipment; may include applicable approvals for military and/or aircraft use. Cleanroom cable glands are suitable for use in a cleanroom environment with the associated properties of maintaining positive pressure, prevention of dust and fluid ingress, etc. Fire protection glands are designed and rated for prevention of fire propagation across the bulkhead or barrier. Industrial glands are used in industrial environments such as factories, process plants, mills, etc. Marine glands are designed for application on ships, offshore mining and drilling settings, or other marine applications. Panel or enclosure cable glands are specifically designed and rated for penetration into electrical panels and/or electromechanical assembly enclosures. Power and utility glands are designed for use with public utility equipment such as power transmission, distribution, and high voltage equipment. Railway glands are designed for use on trains and associated installations. Telecommunications glands are designed for used with communications cable or conduit. Choices for gland mounting include adhesive or compound, flanged or bolted, threaded or nut mount, welded, and cast. Materials of construction available for glands include aluminum, steel, stainless steel, and plastic.


Common features for cable glands include firestop, explosion proof, EMI or RFI shielding, and pre-terminated cable accommodation. Firestop cable glands are designed to withstand fire propagation through barrier. Explosion proof cable glands are designed for some level of explosion safety. EMI and RFI shielding and associated grounding features are used minimize or eliminate electromagnetic (EMI) and radio frequency interference (RFI). Transits configured to accommodate cables with end connectors or terminations already installed; transit can typically be opened up to allow termination pass through and enable subsequent resealing.

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1 comment:

Thina said...

Good for people to know.