Grounding resistance measuring instrument controlled by a microcomputer and a bias magnetic regulator

Author

Li Maotang

Author_Institution

Center for Space Sci. & Appl. Res., Acad. Sinica, Beijing, China

fYear

1996

fDate

17-21 June 1996

Firstpage

18

Lastpage

19

Abstract

The author has successfully developed a grounding resistance measuring instrument controlled by a microcomputer. The instrument can regulate the measuring loop current precisely by the bias magnetic theory of double iron cores and adopt a flexible software to eliminate the error. Tests have shown that the measuring error is less than 0.5%. The instrument thus satisfies precisely the IEC stipulations for measuring grounding resistance of electrical equipment.

Keywords

computerised instrumentation; controllers; earthing; electric current control; electric resistance measurement; magnetic devices; measurement errors; measurement standards; microcomputer applications; IEC stipulations; bias magnetic regulator; bias magnetic theory; double iron cores; electrical equipment; flexible software; grounding resistance measuring instrument; measuring error; measuring loop current; microcomputer; Current measurement; Electrical resistance measurement; Grounding; IEC; Instruments; Iron; Magnetic cores; Microcomputers; Software measurement; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 1996 Conference on

Conference_Location

Braunschweig, Germany

Print_ISBN

0-7803-3376-4

Type

conf

DOI

10.1109/CPEM.1996.546535

Filename

546535