Cable glands are one of the most helpful parts of electronic systems that must operate in demanding industrial conditions. Businesses may ensure that their essential electrical equipment and cable fittings are appropriately protected against the weather by investing in a cable gland and cable protection solution. Although not every industrial application will require them, having a plastic or metal cable gland in place can significantly improve performance when systems are often subjected to extreme stress.
These safeguards are consequently priceless since they can prevent expenses and lost productivity brought on by malfunctions and system downtime. Here, they will examine the most typical industrial uses for the different types of cable glands, as well as some of the essential advantages they can offer for these industries, which are mentioned below:
What is Cable Glands?
When used to attach electrical wires to equipment securely, cable glands are referred to as mechanical cable entrance modules. Cable glands are not designed for quick disconnects, unlike household plugs and other conducting electrical connections. They instead offer a durable and secure connection to a device. There are numerous names for cable glands, including:
• Connection for cables
• Fitting cables
• Alleviation from cable strain
• Cord hold
Cable glands are functional in practically every sector of the economy that makes use of electrical equipment. Power, data, and telecommunications wires can all be used with cord grips in various electrical, instrumentation, control, and automation systems.
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What Purpose Do Cable Glands Serve?
Why they use cable glands is the first thing that needs an answer. For electrical systems, cable fittings are regarded as essential safety components. They serve primarily as sealing and terminating members between a cable and the electrical apparatus to which it is attached. In this capacity, cord grips have the following main functions:
• To protect outside electrical wires that need to be shielded from weather conditions like rain and snow.
• To safeguard the cables and electrical equipment used in offshore applications, they will frequently be submerged in water.
• Under hazardous industrial circumstances where there is a possibility of an explosive situation.
• In industrial environments where electrical equipment must be protected from vast amounts of dust
• Whenever there is a chance that unprotected or unarmed wires could be exposed to harmful or corrosive chemicals
• For putting cables through bulkheads and plating.
Consider the numerous cable gland kinds and choose a solution that offers the proper security and protection if your application involves any of these dangers or needs. For instance, you can need industrial cable glands made of brass, aluminum, or steel to provide a sturdy performance or watertight cable glands to prevent water infiltration. The specific conditions under which your company conducts business will determine the type of cable gland you require to seal cables securely.
5 Different Types of Cable Glands:
There are numerous varieties of USA strong cable ties, each having unique requirements. Metals have been nickel-plated, as well as thermoplastics, and can be used as manufacturing materials. Each form of cable gland is appropriate for a particular function and has limitations. An instrument called the Cable Gland has a rubber structure inside of it. In addition to making it possible to mount electrical wiring, this prevents the entry of solid and liquid particles like water and dust. Both thicker and thinner cables may be utilized with it. There are several models of cable glands, including:
#1 With voltage relief on the cable gland:
It is designed to reduce excessive bending by increasing resistance at the cable’s termination with IP 68 and UV protection.
#2 Cable gland for several tracks:
It permits multiple cables to flow through a single hole. In order to create the numerous track sockets, you must dimension the thread and the properties of the line.
#3 Threaded cable gland:
Due to the short thread wire depth, the PG Thread is advised for low-vibration situations. As a result, they go by the prefix PG.
#4 Threaded cable gland in metric:
Due to the depth of the employed wires, which offers higher safety against pressure and vibration, the Metric Thread or Metric ISO is recommended for connections that need to be more durable. Due to the actual exterior diameter of this similar thread type, it has been given this moniker. It is the C diameter in the case of Cable glands. There are three varieties of Metric Threads: thick, multi, and thin. They are all designated by a capital M, and the thread passage is 1.5mm.
#5 Cable gland for NPT:
The NPT thread operates at the base of the insertion point between the Cable gland and the perforation in the box or equipment. It is indicated to provide impermeability, and its use is independent of the employment of a mounting bolt. This model is an American standard conic thread measured in inches, and its abbreviation stands for National Pipe Thread. The cooking gas valve is an illustration of its sealing ability.
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How to Fit an Armoured Cable Gland?
You will need two appropriately sized spanners, two good wire cutters or a hacksaw, and an armored cable to install a gland. The fitting procedure goes like this:
- Remove the cable gland first, and slide the individual components onto the cable in the proper order.
- Peel back a section of the inner and armoring layers and the outer insulating layer. The kind of cable and gland determines the arrangement and lengths of the peeling sections.
- Construct the cable gland cone with the inner insulation and armor on top. The core wires need to be spread out for this. To prevent damage to the cone’s internal insulation, be sure that these are laid over the cone rather than inside it.
- Slide the ring that grips the armor up.
- The armor-grasping ring will be forced up the cone and caught in place by screwing the armor-locking nut back into the cone.
Utilizing your spanners, tighten each gland component. - Applying the sealing nut will seal the gland’s rear. These squeeze the internal sealing against the exterior insulation to make the gland waterproof.
Cable glands may be metallic, non-metallic, or a combination of both materials. They may or may not be corrosion resistant, as decided by selection following a standard or by corrosion resistance tests. Cable glands must be approved for the chosen type of cable and maintain the level of protection of the equipment they are attached to while utilized, particularly in explosive environments.
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