Techimp Hq S.r.l.

Stefano Rolli

Stefano Serra

Gian Carlo Montanari

Gianpaolo De Robertis

An apparatus for measuring the loss factor of an insulator for medium or high voltages is equipped with a tap adapter forming a point for picking up an electrical signal, and comprises a reference capacitor having a first electrode connected to the tap adapter and a second electrode; a first voltage detection module is connected to the first electrode of the reference capacitor for detecting a signal representative of the voltage applied to the reference capacitor; an active electronic device is connected to earth and to the second electrode of the reference capacitor for keeping the potential of the second electrode at a predetermined reference value; a second voltage detection module is connected to an output of the active electronic device in order to detect a signal representative of the electric current that flows through the reference capacitor.

Apparatus and method for measuring the dissipation factor of an insulator

An apparatus () for measuring the loss factor of an insulator () for medium or high voltages, equipped with a tap adapter () forming a point for picking up an electrical signal (), comprises a reference capacitor () having a first electrode (), which can be connected to the tap adapter (), and a second electrode (); a first voltage detection module () operatively connected to the first electrode () of the reference capacitor () for detecting a signal representative of the voltage applied to the reference capacitor (); a generator module connected to the first electrode () of the reference capacitor () in order to inject a direct electric current into the insulator.

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Bologna, Italy

Stefano Rolli