Siemens Aktiengesellschaft

Robert Huettinger

Jean-Mary Martel

Adolf Schmid

Christian Rohrwild

Thomas Hochmuth

Volker Seefeld

A fuse includes an integrated measuring function. In an embodiment, the fuse includes a fuse housing including a first receiving space delimited by a pressure body and a second receiving space spatially separated from the first receiving space. A fusible conductor is mounted in the first receiving space and a measuring device is accommodated and mounted in the second receiving space. The measuring device has a current transformer and an electronic assembly, electrically conductively connected to the current transformer. Viewed in a direction of longitudinal extent, a height of the current transformer essentially corresponds to a height of the second receiving space. With the aid of the measuring device, it is possible to determine the electric current flowing through the fuse in the immediate vicinity of the fuse. Energy required is generated from the primary current of the fuse by electromagnetic induction, meaning no external power source is required.

Fuse having an integrated measuring function, and fuse body

A fuse element for a fuse with an integrated measurement function, includes a first receiving area in an embodiment, for receiving a melting conductor of the fuse, delimited in the length direction of the fuse by a closure element and in a direction orthogonal to the length direction by the fuse element. Further, in an embodiment, the fuse element has a second receiving area, physically separated from the first receiving area, for receiving a measuring device of the fuse. The second receiving area is designed to receive the measuring device in a wall section of the fuse element. The second receiving area formed in the fuse element protects the measuring device arranged therein against interfering environmental influences. The measuring device is used to ascertain the electric current flowing through the fuse directly on the fuse.

Fuse element and fuse

A fuse includes an integrated measuring function. In an embodiment, the fuse includes a fuse housing which in turn has a first receiving space delimited by a pressure body and a second receiving space which is spatially separated from the first receiving space and is delimited by a protective body, the first and second receiving spaces being arranged one behind the other in a direction of longitudinal extent. A fusible conductor is accommodated and mounted in the first receiving space and a measuring device is accommodated and mounted in the second receiving space. The measuring device has a current transformer and an electronic assembly which is electrically conductively connected to the current transformer. The current transformer and the electronic assembly are arranged one behind the other in the direction of longitudinal extent.

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Schoefweg, Germany

Robert Huettinger