Remotely controlled high potential insulation tester
AssigneeClinton Instrument Company
InventorsHenry H. Clinton, David A. Zeichner
Life of this patent
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Abstract
A remotely controlled high potential dc insulation tester includes a dc power supply and a high voltage electrode mounted within a rotating mechanism and performs insulation tests on conductors which are within the same rotating mechanism. The power supply receives low voltage electrical power from outside of the rotating mechanism, and is monitored and controlled from a remote station in a non-rotating environment. Detecting circuits at the remote station determine the number of faults in a conductor drawn past the electrode and identify large faults such as bare-wire intervals along the conductor.
Claims11
A high potential d.c. insulation tester for testing insulation on a conductor at a first station within a rotating environment for detection at a second remote station in a non-rotating environment comprising:
- a high potential d.c. power supply at the first station having first and second output terminals between which a high potential is produced;
- a testing electrode connected to the first output terminal for applying a high potential from the power supply to the insulation under test;
- current sensitive means also at the first station connected with an output terminal of the power supply and having a low voltage output producing a signal indicative of current flowing between the output terminals of the power supply;
- detection means at the second station responsive to the signal from the current sensitive means for detecting current from the d.c. power supply;
- and
- rotatable electrical coupling means connected between the current sensitive means and the detecting means for receiving the low voltage output signal at the first station within the rotating environment and transmitting the signal to the second station in the non-rotating environment.
Dependencies are inferred from the claim text.