Title:
DC GROUND FAULT DETECTOR AND INTERCONNECTED SYSTEM POWER GENERATING APPARATUS
Document Type and Number:
Japanese Patent JP2003018740
Kind Code:
A
Abstract:
To conduct DC ground fault detection at low cost and secure a high level of safety.
The DC ground fault detector 40 detects a DC ground fault occurring in a DC line by means of a current sensor 41, which is installed on two DC lines 39 in which direct current flows, and which measures the difference in current flowing through the DC lines; the detecting core 44 of the current sensor comprises a zero-phase current transformer(ZCT).
More Like This:
Inventors:
MADENOKOJI MASAKI
ONIZUKA KEIGO
MAKINO YASUHIRO
ONIZUKA KEIGO
MAKINO YASUHIRO
Application Number:
JP2001197947A
Publication Date:
January 17, 2003
Filing Date:
June 29, 2001
Export Citation:
Assignee:
SANYO ELECTRIC CO
SANYO ELECTRIC AIR CONDITION
SANYO ELECTRIC AIR CONDITION
International Classes:
G01R31/02; G05F1/67; H01L31/04; H02H3/33; H02J3/38; H02M7/48; (IPC1-7): H02H3/33; G01R31/02; H01L31/04; H02J3/38; H02M7/48
Attorney, Agent or Firm:
Masayuki Kushibuchi (1 person outside)
Previous Patent: PROTECTIVE RELAY, AND TEST METHOD AND TEST CABLE THEREFOR
Next Patent: CURRENT DIFFERENTIAL RELAY
Next Patent: CURRENT DIFFERENTIAL RELAY