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Island mode earthing arrangements: New Guidance in the Second Edition of the IET Code of Practice on Electrical Energy Storage Systems
Graham Kenyon, our Managing Director, has co-authored an article with Dr Andrew Crossland, Director of Advance Further Energy Ltd, for the latest Issue 84 of the IET’s Wiring Matters industry magazine.
The article looks at earthing arrangements for electrical installations that can operate in island mode (when the mains supply is lost) when they have a battery storage system connected. Importantly, it highlights changes in the earthing requirements introduced in the 2nd Edition of the IET’ Code of Practice for Electrical Energy Storage Systems, of which Graham is co-author along with fellow industry expert Martin Cotterell.
Many electrical installations now incorporate new technologies, including embedded generation and home or building automation systems. As use of these technologies becomes more widespread, we need to be ever mindful that control of power to a circuit no longer relies on simple human switching operations. Electrical energy storage technologies that are capable of operating in island mode, continue to provide power when the grid is isolated.
Some incidents that have occurred recently when implementing energy storage systems outside the UK prompted Dr Andrew Crossland and myself to write an article for IET’s Wiring Matters. The article highlights the risks, and discusses safe isolation.
Further guidance on electrical energy storage systems can be found in the IET Code of Practice for Electrical Energy Storage Systems.
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