Title:
ZERO-PHASE CURRENT TRANSFORMER FOR MEASURING THREE-PHASE FOUR-WIRE LIVE WIRE INSULATION RESISTANCE, AND LIVE WIRE INSULATION RESISTANCE MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/117435
Kind Code:
A1
Abstract:
Disclosed are a zero-phase current transformer for measuring a three-phase four-wire live wire insulation resistance, and a live wire insulation resistance measurement device. The present invention is implemented through a process in which the live wire insulation resistance measurement device calculates a phase angle of each phase-specific voltage and a synthesis leakage current on the basis of each phase-specific voltage measurement value transmitted from the three-phase four-wire zero-phase current transformer and a synthesis leakage current measurement value of each phase-specific zero-phase current transmitted from the three-phase four-wire zero-phase current transformer, and calculates each phase-specific live wire insulation resistance value on the basis of the synthesized leakage current measurement value, the phase angle, and the phase-specific voltage measurement value. According to the present invention, the live wire insulation resistance measurement device can independently measure each phase-specific live wire insulation resistance from each phase-specific zero-phase current.
Inventors:
KIM DONG SUP (KR)
Application Number:
PCT/KR2018/011456
Publication Date:
June 20, 2019
Filing Date:
September 27, 2018
Export Citation:
Assignee:
AD POWER CO LTD (KR)
International Classes:
G01R27/02; G01R15/18; G01R19/165; G01R25/04; G01R27/16; G01R31/02
Foreign References:
| KR20120077742A | 2012-07-10 | |||
| JPS62209371A | 1987-09-14 | |||
| KR101358051B1 | 2014-02-05 | |||
| KR101671638B1 | 2016-11-01 | |||
| JP2006189300A | 2006-07-20 |
Attorney, Agent or Firm:
KIM, Hyun-Ho (KR)
Download PDF:
Previous Patent: FRESNEL LENS PRODUCING MOLD AND MANUFACTURING METHOD THEREFOR
Next Patent: BATTERY PACK
Next Patent: BATTERY PACK