Title:
CURRENT WAVEFORM MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JP2015021743
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a current waveform measurement device in a compact and simple configuration capable of simultaneously monitoring, with a contactless sensor, the current and voltage of an electric wire to be measured, and capable of measuring a current waveform synchronized with the voltage.SOLUTION: An electrode 101 and an electrode 102, each coming in a cylindrical shape, are provided so as to enclose electric wires L1, L2. Each of the electric wires L1, L2 is designed to penetrate inside the electrodes 101, 102, each electric wire being arranged so that it matches the central axis of each electrode and that the electrode and the electric wire are not in electrical contact. The electrodes 101, 102 are provided with a voltage measurement device 105 for measuring a voltage between these electrodes. A current measurement transformer 103 installed on the outside of the electric wire L1 and the electrode 101 and a current measurement device 104 are shown, these functions making it possible to measure a value of current I flowing in the electric wire L1.
Inventors:
SUZUKI YASUNAO
KOZAI MASAKI
TAKATANI KAZUHIRO
HATTORI MITSUO
MORI TOSHINORI
SATO TAMOTSU
SATO KAORU
KOZAI MASAKI
TAKATANI KAZUHIRO
HATTORI MITSUO
MORI TOSHINORI
SATO TAMOTSU
SATO KAORU
Application Number:
JP2013147736A
Publication Date:
February 02, 2015
Filing Date:
July 16, 2013
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
NTT ADVANCED TECH KK
NTT ADVANCED TECH KK
International Classes:
G01R25/00; G01R15/06; G01R15/18; G01R19/00
Domestic Patent References:
| JP2012177571A | 2012-09-13 | |||
| JP2013120098A | 2013-06-17 | |||
| JP2010181378A | 2010-08-19 | |||
| JP2011089915A | 2011-05-06 | |||
| JP2008175532A | 2008-07-31 | |||
| JP2012225896A | 2012-11-15 | |||
| JP2012177571A | 2012-09-13 | |||
| JP2013120098A | 2013-06-17 |
Foreign References:
| US6470283B1 | 2002-10-22 | |||
| US6470283B1 | 2002-10-22 |
Attorney, Agent or Firm:
Patent business corporation A valley and Abe patent firm