Why Rayphen Metal Cable Gland

Rayphen Metal Cable Gland

Rayphen cable gland metal is manufactured with excellent grade raw materials. Its body and cap are made from durable brass-nickel plated. The seal is made from Nitrile Butadiene Rubber  (NBR), polyamide (PA ) for clamp insert, and NBR for O-ring.

The Rayphen metal gland can be found in all types of electric power. You may use Rayphen metal cable gland for instrumentation, control, telecommunications, and data cables.

The following are the features of our cable gland metal:

• Supplied with surface seal mounted
• Flexible blades in locking parts (exert strong pressure on the cable and gives excellent tensile strength)
• Mechanically tightened with Nitrile Butadiene Rubber weatherproof seal for IP68 protection

Rayphen is your best metal cable gland supplier in China. We are capable of manufacturing a wide range of different parts and metal cable glands to satisfy your requirements.

Plus, we offer customized cable gland metal to meet your needs and demands. Rayphen is a leading Chinese supplier of integrated solutions for metal cable gland that meets local and international standards and compliance.

Rayphen offers a complete range of cable glands including brass cable gland, waterproof cable gland, EMC cable gland, compression cable gland, multi-cable gland, flexible cable gland, spiral cable gland, armoured cable gland, etc.

Please get in touch with one of our sales representatives for more details about Rayphen metal cable gland. Send us your inquiry now!

Metal Cable Gland – FAQs Guide

The metal cable glands are utilized at a large level in several electrical and non-electrical installations all around the world. This article will give you a complete understanding of the metal cable glands from their types to the installation procedure. You will also know the specification of each type of metal cable gland, relevant international standards, and the tools required to install them.

Q1.What is Cable Gland?

The cable gland is an electrical component used in electrical fittings. The cable gland allows the entry of electrical cable into the electrical equipment or any related devices.

The cable gland helps in sealing, insulation, grounding, earthing, bonding, retention, and strain relief. This is a useful component to give a strong grip to the electrical cables by providing essential mechanical support.

Q2.What are the main types of Cable Glands?

The cable glands are divided into various types according to their material, shapes, functions, threads, applications, compression, and waterproof degrees.

Types of Cable Gland According to Material

Cable glands are manufactured with different materials like:

• Plastic/nylon Cable Gland
• PVC Cable Gland
• Aluminum Cable Gland
• Brass Cable Gland
• Stainless Steel Cable Gland

                                                     Figure 1 – Types of Cable Gland According to Material

Types of Cable Gland According to Shapes

Cable glands come with two different shapes, which are mentioned as below:

• Straight Cable Gland
• 90 Degree Cable Gland

                                                        Figure 2 – Types of Cable Gland According to Shapes

Types of Cable Gland According to Functions

Different cable glands are manufactured to perform specific functions. Its types according to functions are:

• Explosion Proof Cable Gland
• Waterproof Cable Gland
• EMC Cable Gland
• Spiral Flexible Cable Gland
• Armoured Cable Gland
• Breathable Cable Gland

Types of Cable Gland According to Threads

There are four types of cable glands according to different threads:

• Metric Thread Cable Gland
• PG Thread Cable Gland
• G Thread Cable Gland
• NPT Thread Cable Gland

Types of Cable Gland According to Applications

Cable glands are used at different places and equipment. Its types according to applications are:

• Instruments Cable Gland
• Electrical Cable Gland
• Industrial Cable Gland
• Marine Cable Gland
• Motor Cable Gland

Types of Cable Gland According to Compressions

According to compression type, there are two types of cable glands:

• Single Compression Cable Gland
• Double Compression Cable Gland

                                                    Figure 3 – Types of Cable Gland According to Compressions

Types of Cable Gland According to Waterproof Degrees

The cable glands are protected with an IP rating to survive in wet places. Different waterproof degrees are required at different places and applications. So, you can choose cable glands according to the waterproof degrees, which are:

• IP66 Cable Gland
• IP67 Cable Gland
• IP68 Cable Gland
• IP69 Cable Gland

Q3.   What is a Metal Cable Gland?

The cable glands made with nickel-plated brass, stainless steel, and aluminum are known as the metal cable glands. These are durable cable glands and provide strong resistance against corrosion.

Metal cable glands help connect cables within the electrical equipment to provide them strong grip and sealing.

Q4.   What are the uses of Metal Cable Gland?

The major uses of metal cable glands are in industrial places. These cable glands are specially made for heavy machinery and harsh usage.

The metal cable glands are utilized in production units of different industries as a cap and stoppage appliance, provide extra grip to the electric cables, and help the workers to run their operations smoothly.

Other than that, metal cable glands are used in other commercial places like elevators, automatic doors, marines, instruments, escalators, etc.

Q5.   What types of Metal Cable Glands are there?

The metal cable glands have different types as per their application and system requirements.

Material:

The metal cable glands are mostly formulated with three 3 materials; stainless steel, nickel-plated brass, and aluminum.

Shapes:

There are two shapes of metal cable glands; straight metal cable gland and 90-degree metal cable gland.

Functions:

Not all metal cable glands perform the same functions. You can choose different metal cable glands from the below-mentioned types to fulfill your system specified requirements:

• Waterproof Metal Cable Glands

You can use the waterproof metal cable glands where it is high moisture or frequent flow of water or rains.

                                                          Figure 4 – Waterproof Metal Cable Gland

• Explosion Proof Metal Cable Glands

You can choose explosion-proof metal cable glands to protect your exploit-proof power cables. These cable glands are produced with stainless steel and brass material and have strong resistance against explosions.

                                                       Figure 5 – Explosion Proof Metal Cable Gland

• EMC Metal Cable Glands

The EMC metal cable glands are made short for electromagnetic compatibility and work in their electromagnetic setting and do not construct any electromagnetic obstruction to any other device.

These cable glands provide EMC protection to the cables and electrical components by compressing the cable seals.

                                                                  Figure 6 – EMC Metal Cable Gland

• Armoured Metal Cable Glands

Armoured metal cable glands are installed over the wire braid cables. They are preferred to install in hazardous regain accompanying ATEX Certificates. These are very durable and solid cable glands that provide strong shielding to the cables and electrical equipment.

                                                        Figure 7 – Armoured Metal Cable Gland

• Spiral Flexible Metal Cable Glands

Spiral flexible metal cable glands help to safeguard the cables from sharp edges. These are flexible cable glands, which supply strain relief to cables and also provide protection against dust.

                                                       Figure 8 – Spiral Flexible Metal Cable Gland

• Breathable Metal Cable Glands

These cable glands are efficient in managing internal and external pressure. They help avoid fogging on equipment that ultimately increases the useful life of the product.

                                                         Figure 9 – Breathable Metal Cable Gland

Compressions:

According to the compression type, two types are available for metal cable glands; single compression metal cable gland and double compression metal cable gland.

• Single Compression Metal Cable Glands

These cable glands are capable to survive in extreme weather conditions. These cable glands come up in various sizes and can be installed on cables up to 1000 square mm and 61 cores.

                                                     Figure 10 – Single Compression Metal Cable Gland

• Double Compression Metal Cable Glands

These cable glands are protected with double sealing. They are used on big armored cables while inserting into the board. They are flameproof and waterproof cable glands that provide high protection to the cables and equipment.

                                                      Figure 11 – Double Compression Metal Cable Gland

Q6.   Which material is used in the Metal Cable Gland?

The metal cable glands can be made with nickel-plated brass, stainless steel, or aluminum material. These are solid materials that provide strong protection, durability, explosion protection, and water protection.

Q7.   What are the benefits of using Metal Cable Gland?

If we compare the metal cable glands with other materials, there are several benefits of using the metal cable glands, which are:

• Durability
• Long life
• Corrosion resistance
• Explosion resistance
• Cost-effective
• Applicable at an extensive range of applications

We do not see these features in the cable glands that are not made with metal.

Q8.   How does the Metal Cable Gland work?

The metal cable glands are installed on the edges of the cable while inserting into the board or other equipment.

There is a neoprene rubber seal within the cable gland. When it is tightened while installation, it compresses the cable and that creates a strong grip and perfect sealing on the cable. That sealing protects the equipment from water and dust.

The other end of the cable gland is strained from inside the equipment with a lock nut and washer. That provides a strong grip to the cable and the circuit is not damaged by any external force or movement.

Q9.   How to install the Metal Cable Gland?

Before installation the metal cable gland, you must follow the safety precautions and required standards to avoid any injuries and materialistic losses. Installation must be done by the expert installer by using proper safety measures and equipment.

The installation procedure of metal cable glands:

• Identify the appropriate gland size

Use the cable gland selection chart to choose the appropriate gland according to the cable size.

• Prepare the shroud as per cable diameter

Slide the shroud over the cable diameter and mark the link to be cut. Cut the shroud and slide it over the top of the sheath of the cable.

                                                      Figure 12 – Prepare the shroud as per cable diameter

• Cut the outer sheath and remove armor

Indicate the outermost cover of the cable according to your equipment requirement, cut the sheath with a striping tool, and remove it carefully. Now the armour is exposed, bend the armour strands back and forth to break and remove them. Now the insulated conducted will be exposed.

                                                Figure 13 – Cut the outer sheath and remove armor

• Cut the outer sheath further as per gland length

Mark the sheath slightly longer than the cone length of the gland cut it with a striping tool and remove it. Now the armour is exposed again.

                                                      Figure 14 – Cut the outer sheath further as per gland length

• Bend the armour strands

Bend the armour strands a little, so that they can rest over the surface of the gland cone. You can use armour bending tool as well for thicker armour.

                                                           Figure 15 – Bend the armour strands

• Place the main body gland into the panel

Fit the earth tag over the gland body and insert the main body of the gland into the hole of the panel. Use the locknut and spanner to tighten the main body.

                                                     Figure 16 – Place the main body gland into the panel

• Insert the cable within the main body

Firstly pass the armour locking cap over the cable, and then pass that cable through the body of the gland. Make sure the armour strands are spread over the cone of the gland.

                                                     Figure 17 – Pass the cable through the main body

• Tighten the outer armour locking cap

Fix the outer armour locking cap over the body. There must be some armour strands within the armour locking cap. Tighten it carefully by holding the gland body with the spanner.

                                                              Figure 18 – Tighten the outer armour locking cap

• Cover the gland with the shroud

Cover the full gland with the shroud. It will protect the cable gland against dust and water.

                                                            Figure 19 – Cover the gland with the shroud

Q10. What are the different sizes of Metal Cable Gland?

There are various sizes of metal cable glands according to the cable size. You can choose the suitable metal cable gland from the following cable gland size chart:

                                                        Figure 20 – Cable Gland Selection Chart

Q11.What are the international standards for Metal Cable Gland?

Just like other electrical components, metal cable cleats are also manufactured under international quality standards to make sure the best protection, smooth working, and safety.

The following international standards are followed to manufacture the metal cable glands:

• Cable glands for electrical: IEC/EN 62444
• Mechanical cable gland specifications for plastic and elastomer insulated cables: BS 6121
• Cable glands for electrical installations: BS EN 50262

Q12.Are Metal Cable Glands durable?

Yes, metal cable glands are more durable and have a long useful life as compared to non-metallic cable glands.

Q13.Are Metal Cable Glands weather resistant?

Metal cable glands are made to face all kinds of weather. They are used at both indoor and outdoor places. Their solid material of brass, aluminum, or stainless steel provides them strong resistance against harsh weather.

Q14. Are Metal Cable Glands waterproof?

The metal cable glands can and cannot be waterproof. It depends on your application. If the installation of a metal cable gland is required outdoor or indoors where it is a frequent flow of water, humidity, or rain, then you can choose a waterproof metal cable gland.

Otherwise, you can choose without a waterproof metal cable gland if you are confident that there will be no moisture on the gland.

Q15. What is the IP rating of Metal Cable Gland?

IP (Ingress Protection) rating is used to protect the products from humidity or moisture. Different types of metal cable glands are protected with IP rating to use in moisturized and wet places.

Metal cable glands are protected with IP66, IP67, IP68, and IP69. You can see the following IP rating chart to see the protection level against each IP rating:

                                                       Figure 21 – IP Rating Chart of Metal Cable Glands

Q16. What is the temperature rating of Metal Cable Gland?

The metal cable glands have high resistance against temperature. They can survive against high temperatures.

The metal cable glands made with stainless steel have a temperature rating between -40ºC to +100ºC.

The nickel-plated brass cable glands have also a temperature rating between -40ºC to +100ºC. However, some brass cable glands have temperature ratings between -20ºC to 220ºC.

Q17. What is the clamping capacity of Metal Cable Gland?

Clamping capacity is different for each metal cable gland according to its type, rating, and size.

The minimum clamping capacity of a metal cable gland is 4 mm and a maximum of 48 mm.

Q18. What is the weight of Metal Cable Gland?

The weight of the metal cable gland differs according to its size, dimensions, and other specifications. Its weight ranges from 10.30 grams to 165 grams. You can see the complete details about weight in the following chart:

                                                           Figure 22 – Weight Chart of Metal Cable Glands

Q19. Are Metal Cable Glands dust-proof?

The metal cable glands provide an airtight seal to the cable and the equipment to provide full protection against dust and other particles. The dust-proof feature is provided in all kinds of metallic and non-metallic cable glands.

Q20.What is the IK rating of Metal Cable Gland?

The IK (Impact Protection) is an international standard that protects electrical equipment and gadgets. Different IK ratings provide the levels of resistance against mechanical impact.

However, the metal cable glands are not protected with the IK ratings.

Q21. How do you differentiate between BW and CW Cable Glands?

The BW and CW cable glands are made with brass material. They both come up with earth tags, shrouds, and locknuts. Both of these glands come up in LSNH (Low Smoke Non-Halogen) and normal PVC versions as well.

Some features of both of these cable glands are as follows:

BW Cable Gland:

• Used with steel armoured cables
• Provides clamping armour cables that make sure the mechanical retention and electrical continuity
• They are not provided with a waterproof seal
• Used indoor

CW Cable Gland:

• Used with steel armoured cables
• Provides clamping armour cables that make sure the mechanical retention and electrical continuity
• Protected with IP rating to resist against water and humidity
• Used outdoor

Q22. What is strain relief Metal Cable Gland?

The strain relief metal cable glands are used with the unarmoured braided cables in industrial areas. They come up with both nickel-plated brass and stainless steel materials.

They are protected with IP ratings (IP68 and IP69) and have a temperature rating of +105°C to -60°C.

Q23.How to calculate the correct size of the Metal Cable Gland?

The size of the metal cable gland is equivalent to the cable bundle diameter size. For instance, if the diameter of the cable bundle is 70 mm, then only a 70 mm cable gland will be used for that cable.

If you want to avoid these calculations, you can use the cable gland size chart that is given below. This size chart gives complete detail about metal cable gland size against each core.

                                                               Figure 23 – Cable Gland Size Chart

Q24.What is the difference between single compression and double compression Cable Glands?

The metal cable glands are available with both single compression and double compression. But there are some differences between them.

Single Compression Cable Gland:

• Used on lightly armoured cables
• While tightening, it provides single compression on the armour only. That may not provide much protection against moisture
• There is no cone and cone ring in it

Double Compression Cable Gland:

• Used on heavy armoured cables
• It provides two compressions; on the armour and inner sheath, which increase the protection
• It has a cone and cone ring

Q25.What are the parts of Metal Cable Glands?

The parts of metal cable glands are different for single and double compression glands.

Parts of Single Compression Cable Gland:

• Sealing Nut
• O-Ring
• Gland Body
• Spring
• Neoprene Rubber Seal
• Claw
• Lock Nut

                                                        Figure 24 – Parts of Single Compression Cable Gland

Parts of Double Compression Cable Gland:

• Check Nut
• Entry Seal Ring
• Nipple Entry Part
• Inner Seal Ring
• Armour Clamping Cone
• Amour Clamping Ring
• Main Gland Body
• Outer Seal Ring
• Compression Nut

                                                         Figure 25 – Parts of Double Compression Cable Gland

Q26.What is 90 degree Metal Cable Gland?

90-degree metal cable gland, also known as elbow cable gland, is very useful in placing the cables into equipment in a right angle direction.

This cable gland is bent at 90 degrees and mostly installed at congested places or where the cable direction comes from the 90 degrees of the equipment.

                                                           Figure 26 – 90 Degree Metal Cable Gland

Q27.What are the disadvantages of using Metal Cable Glands?

Although there are lots of benefits and user preferences of metal cable glands, it has some disadvantages.

• Higher weight than non-metallic cable glands
• Poor area efficiency
• Limited flexibility while handling variations in cable thickness

Q28. Are the Metal Cable Glands free of corrosion?

Yes, this is the benefit of metal cable glands that they have strong resistance against corrosion. An extra coating of grease on it for corrosion protection is not required to apply.

Q29.What are PG Thread Metal Cable Glands?

PG thread is another category of metal cable glands. PG thread is a technical term that was made in Germany. But now it is mostly utilized in other countries as well.

The purpose of the utilization of this thread is to combine pieces of electrical conduit and cable glands.

Q30.How to increase the useful life of Metal Cable Glands?

Although the metal cable glands are durable and have a long useful life. But still, you can increase its working life and efficiency by keeping it clean, avoiding unnecessary load on it, unnecessary movement of the cable, or by avoiding any other mechanical load on it.

Adopting these measures will help the metal cable glands run smoothly and increase their useful life.

Q31. What kinds of tests are performed for Metal Cable Glands?

Testing of metal cable glands is performed according to the international standards IEC/EN 62444, BS 6121, and BS EN 50262.

Under the above-mentioned standards, the following tests are performed:

• Cable retention test
• Cable anchorage test
• Cable anchorage twist test
• Impact test
• Torque test
• Ingress protection test
• Electrical continuity test
• Insulation resistance test

Q32. How to perform the cable retention test for Metal Cable Gland?

Cable retention is crucial for electrical safety. A simple pull-out can shut down the running operations. To test the retention level of the cable in the metal cable gland, a retention test is performed.

See the arrangement of the cable retention test in below figure:

                                                           Figure 27 – Arrangement of Cable retention Test

1. Lock Nut
2. Cable Gland
3. Mandrel
4. Load
5. Support

Special arrangements are made to pull the cable from the gland at limited force. If the cable provides enough resistance against the external pull force, it passes the retention test successfully.

You can see the below table to understand the cable retention level against each cable diameter:

Q33. How to perform cable anchorage test of Metal Cable Gland?

Cable glands that are announced with cable anchorage type A and type B should soothe the conductors from strain. You can check the compliance by performing the following tests:

• The cable glands with a single-orifice sealing system, the test mandrel that is equal to the lowest value of the range of anchorage of the cable gland that is provided by the supplier, fixed to the sample.
• The cable glands with a double-orifice sealing system, the test mandrel that is equal to the lowest value of the range of anchorage of the more modest slot of the linked organ are fixed into the littlest slot of a specimen, and each remarkable slot is stopped with an attachment equivalent to the most reduced benefit of sealing range it.
• When the test mandrel is unloaded, it is checked so that any supplanted comparative with the cable gland is able to be recognized without any problem.
• The test mandrel is jerked out fifty times (with the relevant force given in the below figure) for 1 second in its axis direction without giving any jerks.

                                                Figure 28 – Pull Forces for Cable Anchorage & Cable Retention

• After this procedure, the displacement should not be exceeded 2 mm. Complete this assessment subsequent to discharging the force from the test mandrel.

A particular exhibition for the cable anchorage pull test appears in the underneath figure:

                                         Figure 29 – Particular Exhibition for Cable Anchorage Pull Test

• Crank arm
• Off-center pulley
• Pivot point
• Mandrel
• Cable gland
• Locknut
• Load retaining device
• Fulcrum point
• Load in N

Q.34 How to perform cable anchorage twist test of Metal Cable Gland?

The above example with the test mandrel was then scaled on the test setup for the cable anchorage twist test.

After uploading, the mandrel is checked so that any shift can be recognized without any problem. Then torque is applied for one minute.

The test mandrel should not be turned more than 45° throughout the test.

Repeat the pull and twist test (according to the relevant diameter value given in the below figure) with the use of a test mandrel equal to the maximum anchoring range value of the cable gland that is provided by the supplier.

                                                       Figure 30 – Torque Value for Cable Anchorage Twist Test

                                                        Figure 31 – Particular Exhibition for Cable Anchorage Twist Test

1. Bearings enabling easy rotation
2. Device for securing test mandrel
3. Test mandrel
4. Sample
5. Sample securing plate
6. Rotating indicator
7. Direction of rotation
8. Fixed rotating indicator
9. Radius
10. Load in N

Q.35 How to perform impact test of Metal Cable Gland?

The impact test is performed to ensure sufficient resistance against impact. The following procedure can be adapted to perform the test:

• The cable glands with a single-orifice sealing system, a test mandrel identical to the most negligible worth of the mooring extent of the cable gland, which is pronounced by the provider, fixed to the specimen.
• The cable glands with a double-orifice sealing system, a test mandrel parallel to the least worthy of the anchorage scope of the most more modest slot of the cable gland are fixed into the littlest slot of a sample, and each exceptional slot is stopped with an attachment equivalent to the most minimal worth of its sealing range.
• Perform the test according to the temperature provided by the supplier.
• Place the samples in the refrigerator for 8 hours before the test. Test temperature tolerance is ± 2 °C.
• You can perform the test inside the refrigerator.
• The impact point place should be considered the weakest place.
• Mount the sample on a steel base.
• The mass should be fitted with an effective head of hard steel as half of the globe of 25 mm in diameter.
• The base ought to have a mass of at any rate twenty kg or be unyieldingly inserted or fixed within the floor.

The impact energy is applied according to the following impact values chart:

                                                                              Figure 32 – Impact Values

There should be no cracks or signs of disintegration after performing the test.

                                                      Figure 33 – Particular Exhibition for Impact Test

1. Lifting line
2. Guide tube
3. Guide tube support
4. Height scale
5. Impact column support
6. Test mandrel
7. Cable gland
8. Base
9. Cable gland support
10. Mass with the impact head
11. Height H

Q.36 How to perform ingress protection test of Metal Cable Gland?

Water-tightness is crucial for electrical equipment safety. Humidity can easily cause downtime and risk.

The water is splashed with a nozzle on the installed metal cable gland. The water flow rate during the test is a water jet of 100 liters in one minute.

The water jets are applied as per the IP rating of the cable gland. The test vessels along with seals can also be deluge into a dunking water tank for the testing purpose of IPx7.

The result will be successful if the water does not enter into the cable gland and does not create any problem with that.

Q.37 How to tighten the torque for Metal Cable Glands according to the standard?

To tighten the torque for the metal cable gland according to the standard, you can follow the below chart:

                                                        Figure 34 – Tightening Torque for Cable Glands Chart

Q.38 What tools are required to install Metal Cable Gland?

A typical range of tools is required to install the metal cable glands. The list of the required tools is:

• PPE
• Digital Measuring Device
• Dedicated Spanners
• Armour Forming Tool
• Hacksaw
• Outer Seal Tightening Guide
• Safety Knife
• Electrical Scissors

                                                         Figure 35 – Cable Gland Installation Tools

Q.39 What is the quality check procedure of your company for Metal Cable Glands?

The quality check procedure of electrical components is strict. Any manufacturing fault can lead to severe injuries or materialistic losses.

All the manufactured products are checked under the relevant international standards.

The inspection team performs multiple tests following the standards. If any product fails any of the test or quality check procedures, that product is rejected and sent back to the manufacturing unit.

The product is disposed-off if there was a major manufacturing fault. Otherwise, it is reprocessed by correcting the minor fault.

All the safety checks are performed carefully to ensure 100% safety for the end-users.

Q.40 Can we relocate the installed Metal Cable Clamp?

Yes, the metal cable glands can be uninstalled anytime if relocation is required. You can simply use the relevant tools to uninstall and install it at any other place.

If the same wire is required to attach with any other equipment, then you may not require removing the cable gland from the cable if the armoured are fixed with the cone.