Title:
POWER MEASUREMENT DEVICE, AND POWER MEASUREMENT SYSTEM
Document Type and Number:
Japanese Patent JP2015135319
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a power measurement device easy to be mounted, which is a non-contact measurement device and does not require power source equipment.SOLUTION: A power measurement device comprises clamp type detectors each comprising: a magnetic core disposed so as to surround an outer periphery of a power line; a current detection coil wound around the magnetic core; and electrodes for detecting voltage, which is attached to an inner periphery of the magnetic core, for detecting a current and a voltage of the power line and calculating a power. The power measurement device comprises: two clamp type detectors respectively being attached to a voltage line and a ground line of a single phase two line type; and a power measurement circuit for multiplying a difference voltage between the voltage detected by the voltage line side clamp type detector and the voltage detected by the ground line side clamp type detector by the current detected by the voltage line side clamp type detector, to calculate the power.
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Inventors:
ABE RIKIYA
TAMOTO SADAJI
MISAIZU HIROYUKI
TAMOTO SADAJI
MISAIZU HIROYUKI
Application Number:
JP2014226470A
Publication Date:
July 27, 2015
Filing Date:
November 06, 2014
Export Citation:
Assignee:
UNIV TOKYO
International Classes:
G01R21/06; G01R11/00; G01R15/18; G01R21/00; G01R21/133; G01R22/00
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office