Patent ID: 6696925
Filing Date: 2004-02-24
Classification: G01R,H01F

Abstract:
A portable monitoring apparatus for being transported to a location in a electrical power transmission or distribution network and for use in monitoring signals that are carried over a line in the power distribution network, comprising:a platform for being transported to the location in the electrical power transmission or distribution network; an instrument transformer mounted to the platform and having a primary side and a secondary side, with the primary side having a greater number of windings than the secondary side and having an input terminal and an output terminal; a source side bushing, mounted on and insulated from the platform, for connecting a source side of the line to the input terminal of the primary side of the instrument transformer; and a load side bushing, mounted on and insulated from the platform, for connecting a load side of the line to the output terminal of the primary side of the instrument transformer; the secondary side of the instrument transformer reducing a magnitude of the parameter of the signals on the line and outputting monitoring signals; the secondary side of the instrument transformer providing the monitoring signals to a monitoring apparatus; wherein the monitoring apparatus is for monitoring the parameter of the signals that are carried on the line.