JPS55166350A - Signal transmitter/receiver using low-voltage distribution line - Google Patents

Signal transmitter/receiver using low-voltage distribution line

Info

Publication number
JPS55166350A
JPS55166350A JP7497779A JP7497779A JPS55166350A JP S55166350 A JPS55166350 A JP S55166350A JP 7497779 A JP7497779 A JP 7497779A JP 7497779 A JP7497779 A JP 7497779A JP S55166350 A JPS55166350 A JP S55166350A
Authority
JP
Japan
Prior art keywords
load
distribution line
signal
transformer zct
power source
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.)
Pending
Application number
JP7497779A
Other languages
Japanese (ja)
Inventor
Shigeru Maeda
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.)
Kyokuto Electric Co Ltd
Original Assignee
Kyokuto Electric Co Ltd
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 Kyokuto Electric Co Ltd filed Critical Kyokuto Electric Co Ltd
Priority to JP7497779A priority Critical patent/JPS55166350A/en
Publication of JPS55166350A publication Critical patent/JPS55166350A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To ensure the assured signal transmission and at the same time omit the specific engineering work, by utilizing the space between the distribution line and the ground as the signal transmission means. CONSTITUTION:Zero-phase current transformer ZCT is provided between the power source side and the load side, and the signal emerges in the form of potential error ev at the area between the power source side and the load side of each distribution line which piercing through transformer ZCT when the AC signal current is supplied to the secondary winding. Then the load current is detected by transformer ZCT when the load current exceeds the allowance level and in case the specific load is cut off from the distribution line. And the transmitter sends the AC signal through transformer ZCT and in the form of the potential error between the load side and the power source side of the distribution line. Thus the potential is received at point A of the load side, and then relay X of receiver Re actuates to cut off specified load L3.
JP7497779A 1979-06-13 1979-06-13 Signal transmitter/receiver using low-voltage distribution line Pending JPS55166350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7497779A JPS55166350A (en) 1979-06-13 1979-06-13 Signal transmitter/receiver using low-voltage distribution line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7497779A JPS55166350A (en) 1979-06-13 1979-06-13 Signal transmitter/receiver using low-voltage distribution line

Publications (1)

Publication Number Publication Date
JPS55166350A true JPS55166350A (en) 1980-12-25

Family

ID=13562849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7497779A Pending JPS55166350A (en) 1979-06-13 1979-06-13 Signal transmitter/receiver using low-voltage distribution line

Country Status (1)

Country Link
JP (1) JPS55166350A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6331346A (en) * 1986-07-25 1988-02-10 Toyo Commun Equip Co Ltd Data transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6331346A (en) * 1986-07-25 1988-02-10 Toyo Commun Equip Co Ltd Data transmission system

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