Electric power substations transform network voltage, reducing it from higher to lower voltages. They can be bigger or smaller, depending on the voltage they transform.
Substation equipment is regularly checked by technical personnel authorised by Iberdrola Distribución Eléctrica, who are the only people authorised to access these installations. These installations are fitted with security measures (fences, alarms, presence detectors, surveillance cameras, etc.) to avoid unauthorised access.
If an unauthorised person is detected trying to get into a substation by infringing the security measures, notify Iberdrola Distribución Eléctrica by calling 900 17 11 71. Moreover, it is recommended that, as far as possible, unauthorised persons be prevented from accessing or getting close to any substation element.