JPS5622971A - Disconnection detector for potential transformer circuit - Google Patents
Disconnection detector for potential transformer circuitInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0537701Y2 (en) * | 1987-06-25 | 1993-09-24 |
-
1979
- 1979-08-02 JP JP9884479A patent/JPS5622971A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6321150B2 (en) | 1988-05-02 |
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