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How to Download IEC 60439-2 PDF for Free and Boost Your Electrical Engineering Skills




If you are an electrical engineer or a student who wants to learn more about low-voltage switchgear and controlgear assemblies, you might be interested in downloading the IEC 60439-2 PDF for free. This document is a part of the IEC 60439 series, which governs the safety and performance of electrical switchgear and controlgear assemblies.




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IEC 60439-2 is a specific standard that covers the particular requirements for busbar trunking systems (busways), which are used to distribute electrical power in low-voltage installations. Busbar trunking systems consist of prefabricated electrical conductors enclosed in a protective casing, which can be easily installed and modified according to the needs of the application.


By downloading the IEC 60439-2 PDF for free, you can benefit from the following advantages:


  • You can learn about the design, construction, testing and verification of busbar trunking systems, and ensure that they comply with the essential quality and safety standards.



  • You can access the technical specifications and ratings of different types of busbar trunking systems, such as feeder, plug-in, tap-off, riser and distribution units.



  • You can understand the installation and maintenance requirements of busbar trunking systems, such as clearances, supports, connections, earthing and protection.



  • You can compare the advantages and disadvantages of busbar trunking systems with other methods of power distribution, such as cables and wiring.



So how can you download the IEC 60439-2 PDF for free? There are several online sources that offer free access to this document, such as:


  • ABB Library, which provides a comprehensive guide to the new IEC standard series for low-voltage switchgear and controlgear assemblies, including IEC 60439-2.



  • ABB Brochure, which explains the main changes and benefits of the new IEC 61439 standard, which replaces the old IEC 60439 series.



  • GAMBICA Guide, which provides a detailed overview of the BSEN61439-2 standard, which is the UK implementation of the IEC 60439-2 standard.



By downloading the IEC 60439-2 PDF for free from these sources, you can enhance your knowledge and skills in low-voltage switchgear and controlgear assemblies, and become a more competent and confident electrical engineer.


What is IEC 60439-2 and Why It Is Important?




IEC 60439-2 is a part of the IEC 60439 series, which is an international standard for low-voltage switchgear and controlgear assemblies. Switchgear and controlgear assemblies are devices that are used to control, protect and isolate electrical circuits and equipment. They are essential for the safety and reliability of electrical installations, especially in industrial, commercial and public buildings.


IEC 60439-2 specifies the particular requirements for busbar trunking systems, which are a type of switchgear and controlgear assembly that use busbars as conductors. Busbars are solid or hollow metal bars that carry large currents of electricity. Busbar trunking systems are used to distribute electrical power in low-voltage installations, such as lighting, heating, ventilation, air conditioning, motor control and power outlets.


IEC 60439-2 defines the design, construction, testing and verification of busbar trunking systems, and ensures that they comply with the essential quality and safety standards. By following this standard, manufacturers, installers and users of busbar trunking systems can benefit from the following advantages:


  • They can ensure the compatibility and interoperability of different components and accessories of busbar trunking systems.



  • They can reduce the risk of electrical faults, fires, shocks and injuries caused by faulty or inadequate busbar trunking systems.



  • They can improve the efficiency and performance of busbar trunking systems by minimizing power losses, voltage drops and electromagnetic interference.



  • They can optimize the space and cost of busbar trunking systems by using modular and flexible designs that can be easily installed and modified according to the needs of the application.



How to Download IEC 60439-2 PDF for Free?




If you want to download the IEC 60439-2 PDF for free, you have several options to choose from. You can either download it from the official website of the International Electrotechnical Commission (IEC), or from other online sources that offer free access to this document. Here are some steps to follow:


  • Go to the official website of the IEC at https://www.iec.ch/.



  • Click on the "Standards" tab at the top menu bar.



  • Type "IEC 60439-2" in the search box and click on the magnifying glass icon.



  • Select the document "IEC 60439-2:2005" from the list of results.



  • Click on the "Download" button at the right side of the page.



  • You will be asked to register or log in to your IEC account. If you don't have one, you can create one for free by clicking on the "Create an account" link.



  • After logging in or registering, you will be able to download the IEC 60439-2 PDF for free.



Alternatively, you can download the IEC 60439-2 PDF for free from other online sources that offer free access to this document, such as:


  • ABB Library, which provides a comprehensive guide to the new IEC standard series for low-voltage switchgear and controlgear assemblies, including IEC 60439-2.



  • ABB Brochure, which explains the main changes and benefits of the new IEC 61439 standard, which replaces the old IEC 60439 series.



<a href="https://www.gambica.org.uk/static/uploaded/7cce7df9-efb8-42bb-a


What are the Main Changes and Benefits of the New IEC 61439 Standard?




IEC 61439 is the new standard for low-voltage switchgear and controlgear assemblies, which replaces the old IEC 60439 series. The new standard was introduced in 2009 and will be fully implemented by 2014. The new standard aims to harmonize and define all general requirements for low-voltage electrical assemblies, and to provide a clear and consistent framework for the design, verification and testing of different types of assemblies.


The main changes and benefits of the new IEC 61439 standard are as follows:


  • The new standard introduces the concept of design verification, which replaces the type tests of the old standard. Design verification can be carried out by three equivalent and alternative methods: testing, calculation/measurement or application of design rules. This allows more flexibility and efficiency for manufacturers and users of assemblies.



  • The new standard eliminates the categories of type-tested assemblies (TTA) and partially type-tested assemblies (PTTA), and defines only one type of assembly: design verified assembly (DVA). This simplifies the classification and specification of assemblies, and ensures that all assemblies meet the same quality and safety standards.



  • The new standard provides more detailed and comprehensive requirements for different aspects of assemblies, such as temperature rise, short-circuit withstand, electromagnetic compatibility, mechanical operation, protection against electric shock, fire resistance, environmental conditions and marking. This improves the performance and reliability of assemblies, and reduces the risk of failures and accidents.



  • The new standard aligns with other related standards, such as IEC 60947 series for low-voltage switchgear and controlgear devices, IEC 60364 series for low-voltage electrical installations, IEC 60529 for degrees of protection provided by enclosures, IEC 60695 series for fire hazard testing, etc. This facilitates the compatibility and interoperability of different components and systems.



How to Choose the Right Busbar Trunking System for Your Application?




Busbar trunking systems are a type of low-voltage switchgear and controlgear assembly that use busbars as conductors to distribute electrical power in low-voltage installations. They offer several advantages over other methods of power distribution, such as cables and wiring, such as:


  • They are more compact and space-saving, as they eliminate the need for cable trays, ducts and conduits.



  • They are more flexible and adaptable, as they can be easily installed and modified according to the needs of the application.



  • They are more efficient and economical, as they minimize power losses, voltage drops and electromagnetic interference.



  • They are more safe and reliable, as they reduce the risk of fire, shock and short-circuit caused by faulty or inadequate cables and wiring.



However, not all busbar trunking systems are suitable for every application. There are different types of busbar trunking systems that have different characteristics and ratings, such as:


  • Feeder busbar trunking systems, which are used to transport large currents of electricity from the main distribution board to sub-distribution boards or large loads.



  • Plug-in busbar trunking systems, which are used to supply power to small or medium loads through tap-off units that can be plugged into the busbars at any point.



  • Tap-off busbar trunking systems, which are used to supply power to small or medium loads through fixed tap-off units that are connected to the busbars at predetermined points.



  • Riser busbar trunking systems, which are used to transport electricity vertically between different floors or levels of a building.



  • Distribution busbar trunking systems, which are used to distribute electricity horizontally within a floor or level of a building.



To choose the right busbar trunking system for your application, you need to consider several factors, such as:


  • The load current and voltage requirements of your application.



  • The length and layout of your installation.



  • The environmental conditions and protection degree of your installation.



  • The installation and maintenance costs and requirements of your installation.



You also need to consult the manufacturer's specifications and ratings of different types of busbar trunking systems, such as:


  • The rated current (In) and rated insulation voltage (Ui) of the busbars.



The rated short-time withstand current (Icw) and rated peak withstand current (Ipk) of the busbars.</li


Conclusion




IEC 60439-2 is an important standard for low-voltage switchgear and controlgear assemblies, especially for busbar trunking systems. By downloading the IEC 60439-2 PDF for free, you can learn about the design, construction, testing and verification of busbar trunking systems, and ensure that they comply with the essential quality and safety standards. You can also benefit from the advantages of busbar trunking systems over other methods of power distribution, such as compactness, flexibility, efficiency and reliability.


However, you also need to be aware of the main changes and benefits of the new IEC 61439 standard, which replaces the old IEC 60439 series. The new standard introduces the concept of design verification, which replaces the type tests of the old standard. The new standard also eliminates the categories of type-tested assemblies and partially type-tested assemblies, and defines only one type of assembly: design verified assembly. The new standard also provides more detailed and comprehensive requirements for different aspects of assemblies, such as temperature rise, short-circuit withstand, electromagnetic compatibility, mechanical operation, protection against electric shock, fire resistance, environmental conditions and marking. The new standard also aligns with other related standards, such as IEC 60947 series for low-voltage switchgear and controlgear devices, IEC 60364 series for low-voltage electrical installations, IEC 60529 for degrees of protection provided by enclosures, IEC 60695 series for fire hazard testing, etc.


Finally, you also need to choose the right busbar trunking system for your application, according to the load current and voltage requirements, the length and layout of your installation, the environmental conditions and protection degree of your installation, and the installation and maintenance costs and requirements of your installation. You also need to consult the manufacturer's specifications and ratings of different types of busbar trunking systems, such as the rated current and rated insulation voltage of the busbars, the rated short-time withstand current and rated peak withstand current of the busbars, the resistance, reactance and impedance values of the system, etc.


By following these steps, you can download the IEC 60439-2 PDF for free and boost your electrical engineering skills. b99f773239


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