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Selecting Cable Glands for Hazardous Areas: What to Consider

Updated: Feb 20, 2023

Electrical explosion protection includes the properties of cables, wires, and GRP junction boxes located in explosive environments. That is why the selection of appropriate cables and cable gland components, as well as their combination, is critical for your workplace safety. At first glance, selecting this essential ex-proof equipment appears straightforward, yet this is not the case.

Cable glands, also known as cable connectors, seal electrical cables and wires that pass-through walls, floors, and ceilings. They are frequently employed in industrial settings where hazardous material protection is critical.

So, how do you choose a proper explosion-proof cable gland for your hazardous environment and application when there are so many different options available? In this article, we will give you some essential tips on finding high-quality cable glands in Singapore that will meet your safety requirements.

What to Consider When Selecting Ex-Proof Cable Glands in Singapore

Explosion-proof cable glands are required in locations where there is a risk of explosion due to flammable gases, liquids, or dust. They are designed to prevent the entry of these dangerous materials into the enclosure as well as the escape of any sparks or arcs that may occur inside the enclosure.

There are a few factors you must pay attention to when looking to purchase quality explosion-proof cable glands for your industrial applications.

1. The Location of The Cable Gland

The first factor to consider is the environment in which the gland will be used. Cable glands are available in a range of materials, each with its own set of benefits and drawbacks. The material you select should be determined by the environment in which the gland will be placed.

If the environment is wet or dusty, for example, you will need a gland made of a material that can survive those conditions. You will need one that can withstand fluctuating temperatures in marine applications.

2. The Type of Cable Used

The type of cable you will be using is the next thing to consider. Cable glands in Singapore come in a variety of styles to accommodate any type of cable. Make sure you purchase the correct size and type of gland for the job.

3. Level of Protection

Finally, consider the level of protection required.

The most commonly used rating is the Ingress Protection (IP) rating. This rating is based on an equipment’s level of protection against solid and liquid elements. The higher the IP rating, the better the device’s protection.

Cable glands are available in a variety of protection levels, ranging from IP20 to IP68. Select the level of protection that best suits your needs.

Options for Explosion-Proof Cable Glands

The material used to make the cable glands plays an essential role when it comes to the degree of protection they are able to offer. Explosion-proof cable glands made of metals such as stainless steel and brass offer good explosion protection and corrosion resistance.

The seal type used by the cable gland is another important factor to consider. Seals are classified into two types: elastomeric and mechanical. Rubber or silicone elastomeric seals expand when they come into contact with a fluid. This seal is suitable for high temperatures and tough conditions. Mechanical seals are composed of metal and use compression to keep fluid and debris out. This seal is suitable for low temperatures and clean conditions.

Special Considerations for Selecting Industry-Specific Cable Glands

Most hazardous environments carry many external environmental aggressors. Whether you are looking for marine offshore cable glands in Singapore or explosion-proof cable glands for the petrochemical industry, paying attention to the following specifications and seeking the expertise of a reputed cable gland supplier in Singapore will surely make your task easier.

For marine offshore cable glands in Singapore, it is vital that you look for cable gland models that are developed exclusively for saltwater environments. Ideally made with stainless steel, these cable glands are corrosion-resistant and will feature an adjustable compression ring as well as a protective sleeve to keep debris, dust, and moisture out. In other hazardous environments, the cable glands should also be able to provide adequate earthing, bonding, insulation, and strain relief.

Furthermore, take the following factors into account while choosing a compatible explosion-proof cable gland for your application:

  • The type of cable to which the gland will be attached

  • Where the cable glands will be located

Are there any specific space requirements, electromagnetic interference, or other environmental factors?

  • Should the cable gland be water-resistant?

Cable glands are rated IP68 for watertight, dust-proof seals or IP69, where total immersion in water and resistance to direct water jet pressure are needed.

  • Should the cable gland be mud- and oil-resistant?

Hazardous areas, particularly in the offshore sector, such as "shaker rooms" or drilling platforms, are frequently polluted with oil or drilling muck. In such instances, you should ensure that the cable gland can endure harsh environmental conditions.

  • Does the cable gland offer electrical grounding or earthing?

  • Will there be problems with the reaction of dissimilar metals?

  • Is the cable armoured?

If so, special consideration must be given to the cable's inner bedding size, the armour's material, and the armour's short circuit rating.

  • The compatibility of the housing material to which the cable gland will be attached

  • Cable gland thread size and depth (metric or PG)

Lumenex Asia - The Leading Cable Gland Supplier in Singapore

Lumenex Asia is one of the leading cable gland suppliers in Singapore. We are well known for providing high-quality products and excellent customer service. Our cable glands come in a range of sizes and materials, allowing you to find the ideal match every time. Whether it is a brass nickel-plated, stainless-steel cable gland, a polyamide cable gland, or a hexagonal plug you are looking for, we have got you covered.

Lumenex Asia also provides expert advice on selecting the right explosion-proof cable glands for each application, ensuring that you get the best solution for your business. Visit our website to access our full explosion-proof equipment range to find the best that fits your needs. Give us a call at +65 6242 3833, and we will assist you easily locate high-quality cable glands and other ex-proof equipment at unbeatable prices!

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