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Professional registration recognises your competence, commitment, skills and experience.
The IET provides guidance and support to enable members to undertake planned and structured Initial Professional Development (IPD) and Continuing Professional Development (CPD).
Professional development courses designed to help individuals and organisations reach and stay at the leading edge of engineering and technology.
The IET Awards reward and celebrate individual excellence, innovation and ambition (engineering scholarships).
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Search today for your next engineering role on Engineering & Technology Jobs, the job board hosted by the IET.
Standards
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IET Standards publishes authoritative standards, codes of practice and guidance materials for professional engineers and other key stakeholders, using its expertise to achieve consensus on best practice in emerging and established technology fields. ISL also works with expert partners to deliver training based on its publications.
Publications
Buses, Bankers and the Beer of Revenge
From Greek computers to aircraft carriers made of ice - a collection of 50 of the best stories from Justin Pollard’s Eccentric Engineer column in E&T magazine.
Engineering & Technology magazine
E&T is the leading monthly magazine for all engineering professionals. Its award winning content is available in print, online and on iPad.
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Get Involved
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MyCommunity
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Volunteering can enhance your career development, is a personally rewarding experience and also benefits your Community.
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Events
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Highlighted events
20 May 2013 | IET London: Savoy Place, UK
11 - 14 June 2013 | Wyboston Lakes Hotel, Bedfordshire, UK
14 June 2013 | IET London: Savoy Place, UK
8 - 10 April 2014 | Midland Hotel, Manchester, UK
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Policy & Media
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Media centre
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We can provide independent experts to talk to the media on a range of engineering and technology related subjects.
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Policy
Key topics offer summaries of the IET’s positions on many of the most important policy topics.
The IET represents the views of its members on a wide range of professional and technological issues.
Offering unbiased, independent, evidence based policy advice.
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Topic Title: Lightning Protection Topic Summary: Guideliness Created On: 13 September 2012 11:43 AM Status: Post and Reply |
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 13 September 2012 11:43 AM
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Hi all engineers,
I would like to ask lightning protection for substation, normally you guys design this protection using "fixed angle" method or using "EMG - Rolling Sphere" method ? If any engineers here practice the method of Rolling Sphere, may I know how you guys find the surge impedance in the section of transformer bay where as there is no conductor installed on it. or I may still not understand clearly the term conductor in the formula. All I mentioned above from IEEE Std 996-1996. Regards, Linspire Edited: 13 September 2012 at 02:03 PM by Linspire |
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21 September 2012 01:38 PM
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Is there engineer can consult regard on this question ?
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Lightning Protection
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