JPS5622971A - Disconnection detector for potential transformer circuit - Google Patents

Disconnection detector for potential transformer circuit

Info

Publication number
JPS5622971A
JPS5622971A JP9884479A JP9884479A JPS5622971A JP S5622971 A JPS5622971 A JP S5622971A JP 9884479 A JP9884479 A JP 9884479A JP 9884479 A JP9884479 A JP 9884479A JP S5622971 A JPS5622971 A JP S5622971A
Authority
JP
Japan
Prior art keywords
disconnection
potential transformer
case
potential
undervoltage
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
JP9884479A
Other languages
Japanese (ja)
Other versions
JPS6321150B2 (en
Inventor
Hide Kato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9884479A priority Critical patent/JPS5622971A/en
Publication of JPS5622971A publication Critical patent/JPS5622971A/en
Publication of JPS6321150B2 publication Critical patent/JPS6321150B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE: To ensure an automatic detection for the disconnection of the potential transformer circuit, by combining the state signals of the undervoltage detecting means and the switch such as the breader, the disconnecting switch and the like of a system in the receiving and distributing system incorporating plural numbers of potential transformers.
CONSTITUTION: When the received voltage is supplied to the receiving and distributing system, the connecting point of each of potential transformers PT1 and PT2 are set under the hot-line state. And undervoltage relay units R1 and R2 become inactive in case no disconnection arises. In these conditions, if the fusion occurs to fuse F2-1 of the primary side of potential transformer PT2, undervoltage relays R2-1 and R2-3 relating to the insertion phase of fuse F2-1 work. And timer 2 works in case the working of the relays continues longer than the set time. Then the alarm is given to inform the disconnection of the circuit of PT2. In this case, contacts R-1aWR1-3a contribute to deciding that the installment point of PT2 is under the hot-line state. In such constitution, the disconnection of the potential transformer circuit can be detected automatically.
COPYRIGHT: (C)1981,JPO&Japio
JP9884479A 1979-08-02 1979-08-02 Disconnection detector for potential transformer circuit Granted JPS5622971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9884479A JPS5622971A (en) 1979-08-02 1979-08-02 Disconnection detector for potential transformer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9884479A JPS5622971A (en) 1979-08-02 1979-08-02 Disconnection detector for potential transformer circuit

Publications (2)

Publication Number Publication Date
JPS5622971A true JPS5622971A (en) 1981-03-04
JPS6321150B2 JPS6321150B2 (en) 1988-05-02

Family

ID=14230550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9884479A Granted JPS5622971A (en) 1979-08-02 1979-08-02 Disconnection detector for potential transformer circuit

Country Status (1)

Country Link
JP (1) JPS5622971A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0537701Y2 (en) * 1987-06-25 1993-09-24

Also Published As

Publication number Publication date
JPS6321150B2 (en) 1988-05-02

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