How do you use Armour cable?

 

Armour Cable

Introduction


Cable Armour, also known as cable sheath or cable protection, plays a crucial role in various industries, ensuring the safety and reliability of electrical and data transmission systems. In this blog, we'll delve into the world of cable armour, exploring its types, applications, and how to effectively use it.


Understanding Cable Armor


Cable armour is a protective layer surrounding electrical or data cables. Its primary function is to safeguard cables from mechanical damage, environmental factors, and electromagnetic interference. Depending on the specific requirements and applications, different types of cable armour are employed.


Types of Cable Armor


1. Steel Wire Armor (SWA): 

SWA is one of the most common cable armors. It consists of galvanised steel wires wound around the cable. SWA provides robust protection against mechanical damage and is often used in outdoor and underground applications.


2.Steel Tape Armor (STA): 

STA comprises a helically wrapped steel tape. It's more flexible than SWA and is suitable for applications where flexibility is required, such as in shipboard cables.


3.Aluminum Wire Armor (AWA):

 AWA is similar to SWA but uses aluminium wires instead of steel. It's lightweight and corrosion-resistant, making it ideal for marine and offshore installations.


4.Non-Metallic Armor (NMA):

 NMA is made of layers of plastic tape or corrugated steel tape. It provides protection against moisture and is commonly used in indoor applications.


Applications of Cable Armor


1. Power Distribution


In the power distribution sector, armoured cables are used to carry electricity safely over long distances. SWA, in particular, is favoured for its ability to withstand external pressures, making it suitable for underground power transmission.


2.Industrial Settings


Industries like manufacturing, mining, and petrochemicals rely on armoured cables to supply power to heavy machinery and equipment. The robust construction of cable armour ensures that cables remain intact in harsh industrial environments.


3.Telecommunications


Data transmission cables, such as fiber optic cables, are armored to protect against physical damage during installation and maintenance. STA is commonly used for this purpose.


4.Marine and Offshore 


In marine and offshore applications, cables are exposed to saltwater and harsh weather conditions. AWA and SWA cables are preferred choices due to their corrosion resistance.


How to Use Cable Armor Effectively


1.Proper Installation

 Ensure that armoured cables are installed correctly, following industry standards and guidelines. This includes appropriate bending radius, securing of armoured components, and grounding if required.


2.Environmental Considerations

 Choose the type of cable armour that suits the environmental conditions. For instance, if the cables will be exposed to moisture, select a corrosion-resistant armour.


3.Regular Inspection

 Perform routine inspections to check for signs of damage or wear on the cable armour. Timely maintenance can prevent costly cable failures.


4.Grounding

 In some cases, especially with SWA and AWA cables, grounding may be necessary to prevent electrical hazards. Follow electrical codes and safety regulations when grounding armoured cables.


5.Flexibility

 Consider the flexibility requirements of your application. STA and NMA are more flexible than SWA and AWA, making them suitable for applications where the cable needs to bend or flex.


Conclusion 

Cable armour is a critical component in ensuring the reliability and safety of electrical and data transmission systems across various industries. Understanding the types of cable armour and their applications, as well as following proper installation and maintenance practices, is essential for harnessing the full potential of this protective technology. Whether it's powering industries, enabling telecommunications, or supporting offshore operations, cable armour plays an indispensable role in keeping our modern world connected.

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