In this type Per base, body, doors and walls made of concrete or sheet metal sandwich panel and all internal components that are assembled in conformity with the relevant standards. These posts protection (IP) in accordance with customer requirements and international standards and environmental conditions, natural ventilation and forced ventilation for emergency situations (using the fan and thermostat) will be considered. Pdmantd Posts: half of all oil bearing Technical specifications: Mantd pad posts due to their very small dimensions suitable for places where installation space is limited posts. Degree of protection IP54 and these posts are designed to be portable 1600KVA. Post Pdmantd all the oil in medium voltage switches with saving and backup fuses and transformers as well as the active part are inside a tank.