What is the Problem?UK Power Networks (UKPN) and all other Distribution Network Operators (DNOs) provide electricity to both domestic and commercial properties through their low voltage underground distribution network. The underground distribution network is made up of cables, joints and link boxes. Link boxes are used throughout the electrical distribution network to maintain a connection between different points of supply. They provide the flexibility to move demand from one substation to another.The underground distribution network is subject to age-related deterioration which causes cable faults, this leads to a disruption in the power supply. Before the power supply can be restored, accurate identification of the fault location is required. Fault Passage Indicators allow operational staff to establish where a fault current is located. This enables them to determine which set of links need to be removed to restore electricity supply for customers. A Fault Passage Indicator is needed which is suitable for use with LV link boxes. Without this, the process by which fault location is identified is challenging and time consuming.Preferred OutputThrough this call for innovation, UKPN wish to identify a Fault Passage Indicator which will be compatible for use within all designs of LV link boxes. It will need to meet the requirements UK Power Networks’ ETS 05-6005 (see specification here). Design SpecificationThe solution must: provide an indication of fault passage in electricity distribution link boxes to assist operational staff with the identification of a likely fault location be simple and safe to install and remove over solid links. It should not restrict removal of the bell cover or present a risk if it is in contact with live equipment detect and indicate the passage of fault current in excess of 1000A for 5ms in link boxes include a local, high visibility indication. The visual indication shall remain visible until the equipment is manually reset or automatically reset after six hours. be suitable for use in link boxes with voltages up to 400V where the maximum rated fault level is 46kA for a short duration. be suitable for operation within the temperature range -10°C to 160°C. The link that the FPI straddles may become very hot >120°C. It must be constructed from a heat-resistant insulating material. be suitable for operation with relative humidity up to 100% at 60°C. be constructed to the minimum degree of protection IP67 in accordance with BS EN 60529. have a minimum rated insulation voltage of 1000V. be under £50 for each unit. The solution should: designed for a minimum 10-year life span. Meet the requirements of UK Power Networks’ ETS 05-6005. About the EIC The EIC (formerly known as Energy Innovation Centre) works in partnership with the UK Electricity, Gas and Water utilities to identify and support businesses in developing and commercialising products for the energy and water sectors. Next Steps The Opportunities process, managed by the EIC, offers innovators the opportunity to submit proposals which could be potential solutions to our Partners specific challenge. This calls process will shortlist submissions that best answer the call brief with the aim of attending a presentation day with our Partners, where it can be discussed in greater detail with a technical panel.If this is of interest to you CONNECT to register or for further information.