We now offer UKAS accredited testing to the pulsed magnetic immunity test, EN 61000-4-9: 1993 + A1: 2001 and the damped oscillatory magnetic field immunity test, EN 61000-4-10: 1993 + A1: 2001.


Equipment installed in electrical plants can be a prime target for pulsed magnetic fields, of which are generated through lightning strikes to a building or  the switching of High Voltage lines by circuit breakers or bus-bars. The EN 61000-4-9 test simulates such types of disturbances and can help highlight an issue relating to a the reliable operation of a piece of equipment. Similarly, EN 61000-4-10 testing simulates damped oscillatory magnetic fields, which are often generated from High Voltage bus-bars through the operation of isolators within a sub-station environment. If you are a manufacturer of equipment and systems located in such locations then these types of tests should be considered if not already part of a mandatory testing requirements such as National Grid Test Specifications (NGTS).    


Please click here to view the latest Cranage UKAS scope of accreditation.


If you require more information relating to our UKAS scope of accreditation please contact Mark Richens +44 (0) 1630 658568 (102)



CRANAGE can help with all your testing needs. For further details please contact the testing team on

+44 (0) 1630 658568 or email info@cranage.co.uk