AU5211473A - Improvements in electrical protective circuits - Google Patents

Improvements in electrical protective circuits

Info

Publication number
AU5211473A
AU5211473A AU52114/73A AU5211473A AU5211473A AU 5211473 A AU5211473 A AU 5211473A AU 52114/73 A AU52114/73 A AU 52114/73A AU 5211473 A AU5211473 A AU 5211473A AU 5211473 A AU5211473 A AU 5211473A
Authority
AU
Australia
Prior art keywords
protective circuits
electrical protective
electrical
circuits
protective
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.)
Expired
Application number
AU52114/73A
Other versions
AU455440B2 (en
Inventor
Ernest James Moorey
Dirk Jan Vermeulen
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.)
Western Industries Pty Ltd
Original Assignee
Western Industries Pty 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
Priority claimed from ZA720969A external-priority patent/ZA72969B/en
Application filed by Western Industries Pty Ltd filed Critical Western Industries Pty Ltd
Application granted granted Critical
Publication of AU5211473A publication Critical patent/AU5211473A/en
Publication of AU455440B2 publication Critical patent/AU455440B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Escalators And Moving Walkways (AREA)
AU52114/73A 1972-02-15 1973-02-13 Improvements in electrical protective circuits Expired AU455440B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ZAZA72/0969 1972-02-15
ZA720969A ZA72969B (en) 1972-02-15 1972-02-15 Improvements in electrical protective circuits
ZAZA72/7329 1972-10-13
ZA727329 1972-10-13

Publications (2)

Publication Number Publication Date
AU5211473A true AU5211473A (en) 1974-08-15
AU455440B2 AU455440B2 (en) 1974-08-15

Family

ID=

Also Published As

Publication number Publication date
DE2307475A1 (en) 1973-08-23
CA973630A (en) 1975-08-26
IT977355B (en) 1974-09-10
GB1404878A (en) 1975-09-10
FR2172312B3 (en) 1976-02-13
FR2172312A1 (en) 1973-09-28

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