Title:
ALTERNATING CURRENT MEASURING APPARATUS
Document Type and Number:
WIPO Patent Application WO2001020345
Kind Code:
A3
Abstract:
An alternating current measuring apparatus according to the present invention comprises: a centrally hollowed pipe which accommodates time-variant magnetic flux building up in a circular fashion around a conductor live with an alternating current to be measured; a coil which is supported by said centrally hollowed pipe, and inside which is generated an induced electromotive voltage caused by time-variant magnetic flux accommodated inside said centrally hollowed pipe; a cover which wraps up the outer surface of said coil to shield said coil and shuts off electromagnetic disturbance externally originating from the outside; a detachable fixing means for fastening each end of said cover; and a calculator for integrating the value of the induced electromotive voltage generated inside the coil so as to compute the alternating current running through the conductor to be measured.
Inventors:
CHOI WI YENG (KR)
YOON YEO YONG (KR)
YOON YEO YONG (KR)
Application Number:
PCT/KR2000/001027
Publication Date:
June 20, 2002
Filing Date:
September 08, 2000
Export Citation:
Assignee:
CHOI WI YENG (KR)
YOON YEO YONG (KR)
YOON YEO YONG (KR)
International Classes:
G01R15/18; (IPC1-7): G01R15/18; H01F38/30
Foreign References:
| DE1791011A1 | 1971-10-14 | |||
| DE3544508A1 | 1987-06-19 |
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