Title:
APPARATUS FOR DETECTING GROUNDING FAILURE AND MEASURING POSITION OF GROUNDING FAILURE OF MAGNETIC FIELD WINDING
Document Type and Number:
Japanese Patent JPH02114899
Kind Code:
A
Abstract:
PURPOSE: To detect the position where the ground fault has occurred, by providing a potential divider which has a plurality of separated taps in parallel with a field winding, and providing a galvanometer to detect the current between each tap and the earth. CONSTITUTION: This device is provided with a potential divider 4 which has a plurality of taps in parallel with the field winding 2 isolated from an earth, and each tap is connected to a galvanometer 12 through a resistor 6 and a switch 8. One side of the galvanometer 12 is connected with the earth. A processor 24 closes switches 8 in order through a bus 32, and reads the value of the galvanometer 12 into a register 22 through an A/D converter 20. The farther tap from the earth point, the larger current flows to the galvanometer 12, so the rough position of the earth point can be detected.
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Inventors:
JIYOSEFU DEBITSUDO HAAREI
Application Number:
JP23132189A
Publication Date:
April 26, 1990
Filing Date:
September 06, 1989
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
G01R31/06; G01R31/34; H02P9/00; (IPC1-7): G01R31/34; H02P9/00
Attorney, Agent or Firm:
Koichiro Kato (1 person outside)