How to Use Bs 6121 Part 1 1989 Pdf 18 Effectively and Safely for Your Cable Glands and Accessories
What is Bs 6121 Part 1989 Pdf 18?
If you are looking for a standard that specifies the requirements for mechanical cable glands and accessories for electrical installations, you might have come across Bs 6121 Part 1989 Pdf 18. But what exactly is it and what does it mean? In this article, we will explain everything you need to know about Bs 6121 Part 1989 Pdf 18, including its importance, usage, types, installation, testing, maintenance, and sources. By the end of this article, you will have a clear understanding of what Bs 6121 Part 1989 Pdf 18 is and how to use it effectively.
Bs 6121 Part 1 1989 Pdf 18
Why is Bs 6121 Part 1989 Pdf 18 important?
Bs 6121 Part 1989 Pdf 18 is important because it provides a set of rules and guidelines for the design, construction, performance, testing, marking, and packaging of mechanical cable glands and accessories for electrical installations. Cable glands are devices that attach and secure the end of an electrical cable to an equipment or enclosure. Cable accessories are items that are used in conjunction with cable glands, such as washers, locknuts, shrouds, earth tags, etc. Cable glands and accessories are essential for ensuring the safety, reliability, and efficiency of electrical systems.
By following the standards of Bs 6121 Part 1989 Pdf 18, you can ensure that your cable glands and accessories are compatible with the cables they are intended for, that they can withstand the environmental conditions they are exposed to, that they can prevent ingress of dust, water, or other substances into the equipment or enclosure, that they can provide adequate strain relief and sealing for the cables, that they can prevent electric shock or fire hazards due to loose or damaged connections, and that they can comply with the relevant regulations and codes of practice.
How to use Bs 6121 Part 1989 Pdf 18?
To use Bs 6121 Part 1989 Pdf 18, you need to understand the main requirements and specifications that it lays out for cable glands and accessories. These include:
The dimensions and tolerances of the cable glands and accessories, such as the thread size, pitch, length, diameter, etc.
The materials and finishes of the cable glands and accessories, such as the type, grade, hardness, corrosion resistance, etc.
The performance and testing of the cable glands and accessories, such as the mechanical strength, electrical continuity, ingress protection, temperature resistance, etc.
The marking and packaging of the cable glands and accessories, such as the identification, labeling, instructions, etc.
You can find all these details in the Bs 6121 Part 1989 Pdf 18 document, which is divided into several sections and annexes. You can also refer to the diagrams and tables that illustrate the various types and features of cable glands and accessories.
Types of cable glands and accessories that comply with Bs 6121 Part 1989 Pdf 18
There are many types of cable glands and accessories that comply with Bs 6121 Part 1989 Pdf 18, depending on the type of cable they are designed for, the type of equipment or enclosure they are attached to, and the type of environment they are exposed to. Here is a table that lists and compares some of the common types of cable glands and accessories that meet the standards of Bs 6121 Part 1989 Pdf 18:
Type
Description
Application
Indoor gland
A gland that is suitable for indoor use only, where there is no risk of water or dust ingress.
For use with unarmoured cables in dry and clean indoor locations.
Outdoor gland
A gland that is suitable for outdoor use, where there is a risk of water or dust ingress.
For use with unarmoured cables in wet and dirty outdoor locations.
Armoured gland
A gland that is suitable for armoured cables, where there is a need to provide mechanical protection and electrical continuity for the armour wires.
For use with armoured cables in any location where mechanical protection and electrical continuity are required.
Barrier gland
A gland that is suitable for hazardous areas, where there is a risk of explosive gases or vapours being present. It has a sealing compound that fills the voids between the cable cores and prevents gas migration.
For use with unarmoured or armoured cables in hazardous areas where gas-tight sealing is required.
Washer
An accessory that is used to provide a flat surface for the gland to rest on and to prevent damage to the equipment or enclosure.
For use with any type of gland in any location where a flat surface is needed.
Locknut
An accessory that is used to secure the gland to the equipment or enclosure by tightening it on the thread of the gland.
For use with any type of gland in any location where a secure connection is needed.
Shroud
An accessory that is used to cover the exposed part of the gland and provide additional protection against water or dust ingress.
For use with outdoor or armoured glands in wet or dirty locations where extra protection is needed.
Earth tag
An accessory that is used to provide an earth connection between the armour wires of the cable and the equipment or enclosure.
For use with armoured glands in any location where earthing is required.
How to install cable glands and accessories according to Bs 6121 Part 1989 Pdf 18?
To install cable glands and accessories according to Bs 6121 Part 1989 Pdf 18, you need to follow these steps:
Select the appropriate type and size of cable gland and accessory for your cable, equipment, enclosure, and environment. Refer to the Bs 6121 Part 1989 Pdf 18 document for guidance.
Prepare your cable by stripping off the outer sheath, armour wires (if any), inner sheath, and insulation as required. Leave enough length for termination. Refer to the manufacturer's instructions for details.
clearance for the cable and the gland. Refer to the manufacturer's instructions for details.
Assemble your cable gland and accessory by inserting the washer, locknut, shroud, and earth tag (if any) onto the gland body. Refer to the manufacturer's instructions for details.
Insert your cable through the gland body and tighten the gland nut until the cable is securely clamped and sealed. Refer to the manufacturer's instructions for details.
Attach your cable gland and accessory to your equipment or enclosure by screwing the gland body onto the hole and tightening the locknut. Refer to the manufacturer's instructions for details.
Terminate your cable by connecting the cores to the terminals of your equipment or enclosure. Refer to the manufacturer's instructions for details.
Test your cable gland and accessory by checking for any loose or damaged parts, any signs of water or dust ingress, any electrical continuity or resistance issues, etc. Refer to the manufacturer's instructions for details.
How to test and maintain cable glands and accessories according to Bs 6121 Part 1989 Pdf 18?
To test and maintain cable glands and accessories according to Bs 6121 Part 1989 Pdf 18, you need to follow these procedures and methods:
Perform a visual inspection of your cable glands and accessories at regular intervals or whenever there is a change in the operating conditions. Look for any signs of wear and tear, corrosion, cracking, loosening, deformation, etc. Replace any faulty or damaged parts as soon as possible.
Perform a mechanical test of your cable glands and accessories at least once a year or whenever there is a change in the operating conditions. Apply a tensile force to your cable and check if the gland can withstand it without slipping or breaking. Refer to the Bs 6121 Part 1989 Pdf 18 document for guidance on the test method and force value.
Perform an electrical test of your cable glands and accessories at least once a year or whenever there is a change in the operating conditions. Measure the electrical continuity and resistance of your cable gland and accessory using a multimeter or an ohmmeter. Refer to the Bs 6121 Part 1989 Pdf 18 document for guidance on the test method and resistance value.
Perform an ingress protection test of your cable glands and accessories at least once a year or whenever there is a change in the operating conditions. Expose your cable gland and accessory to water or dust as per the IP rating of your equipment or enclosure. Check if there is any leakage or ingress of water or dust into your equipment or enclosure. Refer to the Bs 6121 Part 1989 Pdf 18 document for guidance on the test method and IP rating.
Perform a temperature resistance test of your cable glands and accessories at least once a year or whenever there is a change in the operating conditions. Expose your cable gland and accessory to high or low temperatures as per the temperature rating of your equipment or enclosure. Check if there is any deterioration or deformation of your cable gland and accessory due to thermal expansion or contraction. Refer to the Bs 6121 Part 1989 Pdf 18 document for guidance on the test method and temperature rating.
Where to find and download Bs 6121 Part 1 1989 Pdf 18?
If you are interested in finding and downloading Bs 6121 Part 1 1989 Pdf 18, you have several options:
You can purchase a hard copy or a PDF version of Bs 6121 Part 1 1989 from the official website of BSI (British Standards Institution), which is https://shop.bsigroup.com/. You will need to register an account and pay a fee to access the document.
You can access a free preview of Bs 6121 Part 1 1989 from the official website of ISO (International Organization for Standardization), which is https://www.iso.org/standard/16532.html. You will be able to view some of the pages and sections of the document, but not download it.
You can search for a free download of Bs 6121 Part 1 1989 Pdf 18 from various online sources, such as https://www.pdfdrive.com/, https://www.academia.edu/, https://www.scribd.com/, etc. However, you should be careful about the quality, accuracy, legality, and security of these sources, as they may not be authorized, updated, or safe.
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Conclusion
18, such as from the official websites of BSI and ISO, or from other online sources that may offer free downloads. However, you should always be careful about the quality, accuracy, legality, and security of these sources, and use a reliable and secure PDF reader to view and edit Bs 6121 Part 1 1989 Pdf 18.
FAQs
Here are some of the frequently asked questions and answers about Bs 6121 Part 1 1989 Pdf 18:
What is the difference between Bs 6121 Part 1 1989 and Bs EN 50262:1999?
Bs 6121 Part 1 1989 is a British standard that specifies the requirements for mechanical cable glands and accessories for electrical installations. Bs EN 50262:1999 is a European standard that specifies the general requirements for cable glands for electrical installations. Bs EN 50262:1999 supersedes Bs 6121 Part 1 1989, but Bs 6121 Part 1 1989 is still widely used and accepted in the UK and other countries.
What is the difference between IP ratings and IP codes?
IP ratings and IP codes are both ways of expressing the ingress protection level of an equipment or enclosure against water or dust. IP ratings are numerical values that indicate the degree of protection against water or dust, such as IP54 or IP68. IP codes are alphanumeric values that indicate the type and level of protection against water or dust, such as IPX4 or IP6X.
What are the advantages of using barrier glands over standard glands?
Barrier glands are cable glands that have a sealing compound that fills the voids between the cable cores and prevents gas migration. They are used in hazardous areas where there is a risk of explosive gases or vapours being present. The advantages of using barrier glands over standard glands are that they provide a higher level of ingress protection, gas-tight sealing, fire resistance, and explosion prevention.
How to choose the right size of cable gland and accessory for your cable?
To choose the right size of cable gland and accessory for your cable, you need to measure the diameter and length of your cable, and compare it with the dimensions and tolerances of the cable gland and accessory that you want to use. You can find these details in the Bs 6121 Part 1989 Pdf 18 document or in the manufacturer's instructions. You should also consider the type of cable, equipment, enclosure, and environment that you are using.
How to dispose of old or damaged cable glands and accessories?
To dispose of old or damaged cable glands and accessories, you should follow the local regulations and guidelines for waste management and recycling. You should also ensure that you remove any hazardous materials or substances from the cable glands and accessories before disposing of them. You should also avoid mixing different types of metals or plastics in the same disposal bin.
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