The "LV Historic Faults" dataset provides all unplanned occurrences / interruptions of 3 minutes or longer on the SPEN network from 1st April 2014. Any occurrence on the SPEN network which: a) affects the distribution system or other connected electricity supply system, which involves a physical break in the circuit upstream of the customers interrupted (or circuit affected), for three minutes or longer, due to automatic or manual operation of switchgear or fusegear, or due to any other open circuit condition, which: results in an interruption of supply to customer(s) for three minutes or longer; orprevents a circuit or item of equipment from carrying normal load current or being able to withstand “through fault-current” for three minutes or longer.b) causes the un-programmed isolation of any circuit or item of equipment, energised at power system voltage, which has not been classified as a pre-arranged incident;c) causes failures of non-system equipment (e.g. pilot cables, oil and gas alarms, voltage control equipment etc.) which result in the disconnection of equipment energised at power system voltage; incorrect operations of protection equipment which result in the interruption of a circuit energised at power system voltage;d) causes failures by protection equipment to operate. This includes incidents where the main protection fails to operate and a fault clearance is initiated by back-up protection or protection at another point on the network;e) causes any interruption to supply to customers caused by incidents on other connected systems owned by the National Grid/Transmission Companies (in Scotland), other distribution businesses, embedded generators, that arises from loss of supply to these systems.Disclaimer: Data for previous reporting years has been submitted and will not change. Data within the current reporting year is subject to change.If you wish to provide feedback at a dataset or row level, please click on the “Feedback” tab above.Data TriageAs part of our commitment to enhancing the transparency, and accessibility of the data we share, we publish the results of our Data Triage process.Our Data Triage documentation includes our Risk Assessments; detailing any controls we have implemented to prevent exposure of sensitive information. Click here to access the Data Triage documentation for the Historic Faults dataset. To access our full suite of Data Triage documentation, visit the SP Energy Networks Data & Information.Download dataset metadata (JSON)