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JPS5249436A - Circuit for monitoring ground fault of nonngtounding ddc circuit - Google Patents

Circuit for monitoring ground fault of nonngtounding ddc circuit

Info

Publication number
JPS5249436A
JPS5249436A JP12118976A JP12118976A JPS5249436A JP S5249436 A JPS5249436 A JP S5249436A JP 12118976 A JP12118976 A JP 12118976A JP 12118976 A JP12118976 A JP 12118976A JP S5249436 A JPS5249436 A JP S5249436A
Authority
JP
Japan
Prior art keywords
circuit
nonngtounding
ground fault
ddc
monitoring ground
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP12118976A
Other languages
Japanese (ja)
Other versions
JPS598130B2 (en
Inventor
Ruumoruto Geruharuto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of JPS5249436A publication Critical patent/JPS5249436A/en
Publication of JPS598130B2 publication Critical patent/JPS598130B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G01R27/18—Measuring resistance to earth, i.e. line to ground

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Emergency Protection Circuit Devices (AREA)
JP51121189A 1975-10-09 1976-10-08 Circuit device for monitoring ground faults in non-grounded DC circuits Expired JPS598130B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752545315 DE2545315B2 (en) 1975-10-09 1975-10-09 CIRCUIT ARRANGEMENT FOR EARTH FAULT MONITORING OF EARTH-FREE DC CIRCUIT

Publications (2)

Publication Number Publication Date
JPS5249436A true JPS5249436A (en) 1977-04-20
JPS598130B2 JPS598130B2 (en) 1984-02-23

Family

ID=5958784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51121189A Expired JPS598130B2 (en) 1975-10-09 1976-10-08 Circuit device for monitoring ground faults in non-grounded DC circuits

Country Status (2)

Country Link
JP (1) JPS598130B2 (en)
DE (1) DE2545315B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112952C2 (en) * 1981-03-31 1994-05-05 Walther Bender Gmbh & Co Kg Di Method and device for determining the total lead impedance in an ungrounded AC network
US4809123A (en) * 1986-04-14 1989-02-28 Isco, Inc. Ground fault detector for high-voltage DC power supplies
DE4339946A1 (en) * 1993-11-24 1995-06-01 Walther Bender Gmbh & Co Kg Di Method and device for monitoring the insulation of unearthed direct and alternating current networks

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497407A (en) * 1972-05-11 1974-01-23
JPS5012548A (en) * 1973-04-09 1975-02-08
JPS5044449A (en) * 1973-08-24 1975-04-21

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497407A (en) * 1972-05-11 1974-01-23
JPS5012548A (en) * 1973-04-09 1975-02-08
JPS5044449A (en) * 1973-08-24 1975-04-21

Also Published As

Publication number Publication date
DE2545315A1 (en) 1977-04-14
JPS598130B2 (en) 1984-02-23
DE2545315B2 (en) 1977-11-03

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