G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 33/02 (2006.01) G01R 1/44 (2006.01) H02J 11/00 (2006.01)
Patent
CA 2203748
There is disclosed a device for measuring the magnetic field strengths associated with a.c. electrical currents over a protracted period of time and, as required, in hostile environments. A preferable application calls for the determination of the field strengths associated with electrical currents flowing in the a.c. power distribution lines of.utilities. The device includes a monitoring instrument positioned in relation to the power lines to be monitored, typically at the base of a pole immediately adjacent the pole of the power line or on a power line supporting pole itself. In order to provide for long term, powering of the monitoring device, d.c. power is developed utilizing the a.c. power that is present. The conversion from a.c. to d.c. is effected at a distance sufficiently far from the monitoring instrument so as not to have any consequence on the readings that are being taken. Readings during the protracted period are typically stored and then accessable at pre-determined periods. A device for checking the operability of the instrument is disclosed. A device for determining the lateral profile of magnetic field strengths for transverse distances from the location site of the monitoring instrument is also disclosed.
Dimock Stratton Llp
Public Service Electric And Gas Company
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