KR950002646B1 - Detecting device for root mean square current - Google Patents

Detecting device for root mean square current Download PDF

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Publication number
KR950002646B1
KR950002646B1 KR92014941A KR920014941A KR950002646B1 KR 950002646 B1 KR950002646 B1 KR 950002646B1 KR 92014941 A KR92014941 A KR 92014941A KR 920014941 A KR920014941 A KR 920014941A KR 950002646 B1 KR950002646 B1 KR 950002646B1
Authority
KR
South Korea
Prior art keywords
current
detecting device
mean square
root mean
square current
Prior art date
Application number
KR92014941A
Other languages
Korean (ko)
Other versions
KR940004918A (en
Inventor
Chun-So Ku
Original Assignee
Gold Star Electric Mach
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gold Star Electric Mach filed Critical Gold Star Electric Mach
Priority to KR92014941A priority Critical patent/KR950002646B1/en
Publication of KR940004918A publication Critical patent/KR940004918A/en
Application granted granted Critical
Publication of KR950002646B1 publication Critical patent/KR950002646B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The detector is designed to diagnose the overcurrent and the short condition for the circuit breaker. The detector comprises; the 1st, 2nd, 3rd, 4th current transducers(CT1-CT4) outputting current according to the turn ratio; a rectifying unit to convert the sensed current to the dc value; a control voltage unit outputting the cut off signal for power supply; 1st, 2nd, 3rd amplifiers to amplify the output of 1st, 2nd, 3rd rectifier; 1st, 2nd, 3rd multiplexing units according to the microprocessor selection signal; an A/D converter digitizing the input/output signal.
KR92014941A 1992-08-19 1992-08-19 Detecting device for root mean square current KR950002646B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR92014941A KR950002646B1 (en) 1992-08-19 1992-08-19 Detecting device for root mean square current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR92014941A KR950002646B1 (en) 1992-08-19 1992-08-19 Detecting device for root mean square current

Publications (2)

Publication Number Publication Date
KR940004918A KR940004918A (en) 1994-03-16
KR950002646B1 true KR950002646B1 (en) 1995-03-23

Family

ID=19338204

Family Applications (1)

Application Number Title Priority Date Filing Date
KR92014941A KR950002646B1 (en) 1992-08-19 1992-08-19 Detecting device for root mean square current

Country Status (1)

Country Link
KR (1) KR950002646B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061531A1 (en) * 2000-02-17 2001-08-23 Netzone Co Ltd Method of providing services of handling civil affair report and guarantee on internet
KR100813808B1 (en) * 2006-11-16 2008-03-13 엘에스산전 주식회사 Current measurement circuit with improved resolution and controlling method thereof and digital protection relay of using the same

Also Published As

Publication number Publication date
KR940004918A (en) 1994-03-16

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