BR6804450D0 - Detector de corrente em arco - Google Patents

Detector de corrente em arco

Info

Publication number
BR6804450D0
BR6804450D0 BR204450/68A BR20445068A BR6804450D0 BR 6804450 D0 BR6804450 D0 BR 6804450D0 BR 204450/68 A BR204450/68 A BR 204450/68A BR 20445068 A BR20445068 A BR 20445068A BR 6804450 D0 BR6804450 D0 BR 6804450D0
Authority
BR
Brazil
Prior art keywords
current detector
arc current
arc
detector
current
Prior art date
Application number
BR204450/68A
Other languages
English (en)
Inventor
Sel
Original Assignee
Sel
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 Sel filed Critical Sel
Publication of BR6804450D0 publication Critical patent/BR6804450D0/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Control Of Direct Current Motors (AREA)
  • Measurement Of Current Or Voltage (AREA)
BR204450/68A 1967-11-30 1968-11-29 Detector de corrente em arco BR6804450D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54588/67A GB1200909A (en) 1967-11-30 1967-11-30 Loop current detector

Publications (1)

Publication Number Publication Date
BR6804450D0 true BR6804450D0 (pt) 1973-03-08

Family

ID=10471497

Family Applications (1)

Application Number Title Priority Date Filing Date
BR204450/68A BR6804450D0 (pt) 1967-11-30 1968-11-29 Detector de corrente em arco

Country Status (9)

Country Link
US (1) US3579106A (pt)
BE (1) BE724752A (pt)
BR (1) BR6804450D0 (pt)
CH (1) CH483765A (pt)
DE (1) DE1811645A1 (pt)
ES (1) ES360942A1 (pt)
FR (1) FR1599099A (pt)
GB (1) GB1200909A (pt)
NL (1) NL6817093A (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2360375C3 (de) * 1973-12-04 1978-05-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Bewertung eines Stromes nach Größe und Richtung
JPS5637793A (en) * 1979-09-05 1981-04-11 Hitachi Ltd Loop detecting circuit
JPS6022571B2 (ja) * 1979-12-05 1985-06-03 株式会社日立製作所 地絡保護方式
US10648324B2 (en) * 2013-09-30 2020-05-12 Welladv Oil Service Limited Auxiliary system for use in drilling

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047804A (en) * 1962-07-31 Apparatus for removing spurious signals
US2851638A (en) * 1957-07-03 1958-09-09 Reeves Instrument Corp Voltage magnitude comparison circuit

Also Published As

Publication number Publication date
CH483765A (de) 1969-12-31
BE724752A (pt) 1969-06-02
FR1599099A (pt) 1970-07-15
DE1811645A1 (de) 1969-07-24
NL6817093A (pt) 1969-06-03
GB1200909A (en) 1970-08-05
ES360942A1 (es) 1970-08-01
US3579106A (en) 1971-05-18

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