BS EN 62475:2010

What is BS EN 62475 - High-current test techniques about? 

BS EN 62475 is an international standard that covers high-current test techniques, ensuring effective communication and understanding of the terms and methods involved in the tests. 

BS EN 62475 is applicable to high-current testing and measurements on both high-voltage and low-voltage equipment. 

BS EN 62475 deals with steady-state and short-time direct current (as e.g. encountered in high-power d.c. testing), steady-state and short-time alternating current (as e.g. encountered in high-power a.c. testing), and impulse-current. 

In general, currents above 100 A are considered in BS EN 62475, although currents less than this can occur in tests. 

Note: BS EN 62475 also covers fault detection during, for example, lightning impulse testing. 

Who is BS EN 62475 - High-current test techniques for? 

BS EN 62475 on high-current test techniques applies to: 

• High current testing labs 
• Immunity testing services 
• High power testing services 
• Electrical testing labs 

Why should you use BS EN 62475 - High-current test techniques? 

A measuring system is a complete set of devices suitable for performing measurements of a quantity to be measured (measurand). Software used to obtain or calculate measurement results also forms a part of the measuring system. 

BS EN 62475 provides users: 

• Definitions of the terms used
• Definitions of parameters and their tolerances 
• Methods to estimate uncertainties of high-current measurements 
• The requirements that a complete measuring system shall meet 
• The methods for approving a measuring system and checking its components 
• The procedure by which the user shall show that a measuring system meets the requirements of this standard, including limits set for the uncertainty of measurement 

BS EN 62475 provides users guidance on procedures for qualification and use of measuring system, test requirements for an approved measuring system, steady-state direct current, steady-state alternating current, short-time direct current, short-time alternating current, ensuring the operability and performance of the high-current test techniques. 

By adopting BS EN 62475, users can standardize the definitions and requirements for test currents and measuring systems, enabling monitoring, development and safety of electrical and electronic systems.