Abstract: A shrinkable cable joint includes a joint insulating layer that surrounds a connection region configured to house two connected cable ends. A joint semiconductive layer surrounds the joint insulating layer. A joint screen layer surrounds the joint semiconductive layer. A joint sheath surrounds the joint screen layer. A capacitive voltage sensor is arranged between the joint screen layer and the joint semiconductive layer. The capacitive voltage sensor includes a sensor insulating layer having a first side and an opposite second side; a sensor electrode and a guard electrode arranged on the second side and directly contacting the joint semiconductive layer; and a sensor conductive layer arranged on the first side. The sensor conductive layer includes a first conductive layer portion in direct contact with the joint screen layer and electrically coupled to the guard electrode and a second conductive layer portion electrically coupled to the sensor electrode.

Abstract: A shrinkable cable joint includes a joint insulating layer that surrounds a connection region configured to house two connected cable ends. A joint semiconductive layer surrounds the joint insulating layer. A joint screen layer surrounds the joint semiconductive layer. A joint sheath surrounds the joint screen layer. A capacitive voltage sensor is arranged between the joint screen layer and the joint semiconductive layer. The capacitive voltage sensor includes a sensor insulating layer having a first side and an opposite second side; a sensor electrode and a guard electrode arranged on the second side and directly contacting the joint semiconductive layer; and a sensor conductive layer arranged on the first side. The sensor conductive layer includes a first conductive layer portion in direct contact with the joint screen layer and electrically coupled to the guard electrode and a second conductive layer portion electrically coupled to the sensor electrode.

Abstract: A boiler has a combustion chamber wherein combustion occurs under high turbulence and wherein the combustion products in the form of smoke are exhausted from the boiler in proximity to the liquid to be heated in a manner whereby the risk of the smoke path being clogged by soot is eliminated so that pollution of the ambient atmosphere is negligible. The burner-operated boiler has a combustion chamber which, at least in front of the burner, is defined by a concave wall section having its concavity facing the burner. In this manner, a recirculation of a portion of the smoke is obtained in the combustion chamber creating a high turbulent condition thereby facilitating complete combustion. The smoke is discharged from the combustion chamber into a smoke sleeve have a substantially annular shape with a vertical axis wherein the only horizontal wall on which deposition of soot may occur is very small.