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Lithium battery powered trains are on the way
This BBC news article discusses new developments in battery powered trains, and explores safety and the question of whether they can replace diesel locomotives on Britain’s rail network.
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Launch of the 5th Edition IET Code of Practice for Electric Vehicle Charging Equipment Installation
Graham Kenyon presented a webinar on the 5th Edition of the IET’s Code of Practice for Electric Vehicle Charging Equipment Installation, for which he is the technical author. The webinar included questions and answers session, streamed live from the IET, Futures Place, Stevenage, on Tuesday 31 October 2023.
This Webinar is available on-demand via IET TV:
Draft for public comment for 5th Edition of the IET Code of Practice for EV Charging Equipment Installation
The 5th Edition of the IET’s Code of Practice for Electric Vehicle Charging Equipment Installation is now available for public comment. The Draft for Public Comment period is open until 3rd April 2023.
Our Managing Director, Graham Kenyon, is proud to again author this Edition.
For instructions on how to comment, and access the Draft, please visit the IET’s web-site for the consultation via the following link: https://electrical.theiet.org/get-involved/consultations/draft-for-public-comment-code-of-practice-for-electric-vehicle-charging-equipment-installation-5th-edition/
NOTE May 2023: hyperlink removed, as web-page has been removed from host site
Supplement: Electric vehicle charging installations at filling stations now available
Graham Kenyon, our Principal, has contributed to this important industry publication, which deals with the additional requirements for electric vehicle charging equipment installations at filling stations.
This supplement will be invaluable for those working with EV charging equipment at filling stations, and includes earthing performance requirements for Mode 4 electric vehicle supply equipment with an IT earthing arrangement.
The publication is now available to purchase from the APEA web-site.
IET Wiring Matters Article on the 4th Edition EV Code of Practice
Our Managing Director, Graham Kenyon, has prepared an article for the latest Issue 80 – May 2020 – of the IET’s Wiring Matters industry publication. looking at the the key changes in the 4th Edition of the IET Code of Practice for Electric Vehicle Charging Equipment Installation.
As Graham is the technical author of the publication, the article provides a unique perspective on the technical aspects.
Read the article here
The online course for EV charging equipment installation has also been updated to reflect the 4th Edition of the IET Code of Practice, and Amendment 1 (2020) to BS 7671:2018.
Fourth Edition of the EV Code of Practice now available
The 4th Edition of the IET Code of Practice for Electric Vehicle Charging Equipment Installation is now available. Our Managing Director, who is the lead author of the publication, provides a commentary on the key changes and new information.
The 4th Edition, available from the IET, is updated to BS 7671:2018 + A1:2020, and also includes:
- guidance for on street installations updated to cover a wide range of situations
- new information on load unbalance in three-phase installations
- guidance on the selection and use of new open-PEN detection
- guidance on the dangers associated with TT islands, and safe separation distances below ground for earth electrodes
- Amendment 1 (2020) to BS 7671:2018 in its entirety
Open PEN detection where PME conditions apply
Regulation 722.411.4.1 (iii), (iv) and (v) permit the use of protective devices which detect open-circuit protective earth and neutral (PEN) conductors in the PME supply.
These devices are relatively new, and there are no product-specific standards available at present. The 4th Edition provides the guidance that installers need to select and install these new protective devices.
The device described in 722.411.4.1 (iv) is only suitable for installations with single-phase supplies, and should not be used for single-phase charging equipment in a three-phase installation. An important feature of the wording in 722.411.4.1 (iii) and (iv) is that the devices shall not be capable of re-closing onto the conditions they detect are hazardous. In order to provide equivalent safety, a device described in 722.411.4.1 (v) must also have the same feature.
A new approach to phase unbalance in three-phase systems
Our Managing Director has developed a new approach to determining whether exception (i) to Regulation722.411.4.1 applies in a three-phase system. This method removes the need for calculations using the formulas in Annex 722, A722.1 and A722.2, and relies only on knowledge of the worst-case unbalance conditions, and either use of a lookup table, or application of a rule-of-thumb.
This method is described fully in Annex J of the IET Code of Practice for EV Charging Equipment Installation 4th Edition.
Updated guidance on deriving a TT earthing arrangement from a TN supply
Unsafe installation practices have been observed where a separate TT supply is used for electric vehicle charging equipment. Further, this approach may not offer any benefit at all in small curtilage properties, such as a common semi-detached dwelling.
New and extended guidance is now included, to help designers and installers:
- determine when it is unsafe to employ a TT earthing arrangement in installations with TN supply earthing arrangements
- understand the risks associated with driving electrodes
- ensure adequate separation distances below ground, between exposed-conductive-parts connected to different earthing arrangements
- ensure an adequate separation distance below ground between the TT earth electrode, and buried conductive parts connected to the TN earthing arrangement, and understand that in certain cases, distribution network operators require a greater separation distance
Other new or revised guidance
There is an update to the section on Vehicle as storage, including new material by Dr Andrew Crossland and Mark Collins of Advance Further Energy, and new arrangements for installation of EVSE in prosuming installations by our Managing Director. The section on Integration and smart infrastructure has also been updated to include new material from Cameron Steel of Silver EMS.
The DNO notification process has been updated, and guidance is now included on earthing arrangements for the installation of Mode 4 (DC rapid charging) EVSE, some of which employs isolation between the AC source and the DC vehicle charging supply.
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Graham discusses electric vehicle charging infrastructure challenges
In this interview following the London electric vehicle charging infrastructure strategy launch, at the IET, Savoy Place, London, on Monday 17 June 2019, Graham discusses the challenges that, particularly in UK cities, must be overcome to realise our climate change and pollution commitments.
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Graham supports the Mayor of London’s plan for electric vehicle charging infrastructure
Our Managing Director, Graham Kenyon, was pleased to support London Mayor Sadiq Khan’s launch of the plan for the electric vehicle charging infrastructure in London on Monday 17 June 2019.
Graham, Chair of the IET’s Wiring Regulations Policy Committee, author of the 3rd Edition of the IET’s Code of practice for electric vehicle charging equipment installation, chaired a technical question and answer session as part of the launch event.
Read more about the launch in this IET Member News article.
IET Academy on-line course for EV Charging equipment installation
G Kenyon Technology Ltd, as a content partner with IET Academy, have developed an on-line course for EV charging equipment installation. It has been updated to the latest 4th Edition (2020) and BS 7671:2018+A1:2020.
The IET Academy has now closed, and bookings are no longer possible
G Kenyon Technology Ltd is not responsible for the contents of other sites linked from this page
New on-line course for electric vehicle charging equipment installation
** now updated to BS 7671:2018+A1:2020, and the 4th Edition of the IET Code of practice for electric vehicle charging equipment installation **
G Kenyon Technology Ltd, as a content partner with the IET Academy, has developed an on-line course for designers and installers of Electric Vehicle Charging Equipment Installations.
Course Overview
This course will cover: the design of electrical installations for, and specification of, electric vehicle charging equipment installations; the requirements detailed in Section 722 of BS 7671:2018; and recommendations of the IET Code of Practice for Electric Vehicle Charging Installations, 3rd Edition. It provides an understanding of the key requirements for protection against electric shock, including selection and use of earthing systems, and introduces vehicle-as-storage, wireless power transfer (WPT) and smart infrastructure installations.
The IET Academy has now closed, and bookings are no longer possible