Sensored insulation plug with temperature sensor

Sensored insulation plug for being inserted into a rear cavity of a medium voltage or high-voltage separable connector in a power distribution network of a national grid, and operable to insulate a connection element of the separable connector on an elevated voltage and to sense the elevated voltage, wherein the sensored insulation plug comprises:

• a) a plug body formed by a first electrically insulating material and rotationally symmetric about a plug axis defining axial directions and radial directions orthogonal to the axial directions;
• b) an integrated sensing capacitor, operable as a high-voltage capacitor in a sensing voltage divider for sensing the elevated voltage, the sensing capacitor comprising
• i) a high-voltage electrode, electrically connected to the connection element when the sensored insulation plug is inserted into the rear cavity of the separable connector;
• ii) a sensing electrode, embedded in the first insulating material,
• iii) a dielectric arranged between the high-voltage electrode and the sensing electrode and comprising a portion of the first insulating material,
• c) a circuit board comprising a signal contact, electrically conductively connected to the sensing electrode,
• d) a temperature sensor, arranged on the circuit board and comprising a sensor probe, operable to sense a temperature in the vicinity of the sensor probe, in surface contact with, or thermally coupled to, the first insulating material, for sensing a temperature of the first insulating material.