JPS54137647A - Current transformer protection device - Google Patents
Current transformer protection deviceInfo
- Publication number
- JPS54137647A JPS54137647A JP4616578A JP4616578A JPS54137647A JP S54137647 A JPS54137647 A JP S54137647A JP 4616578 A JP4616578 A JP 4616578A JP 4616578 A JP4616578 A JP 4616578A JP S54137647 A JPS54137647 A JP S54137647A
- Authority
- JP
- Japan
- Prior art keywords
- current transformer
- terminals
- elements
- resistance
- abnormal voltage
- 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
Links
Landscapes
- Thermistors And Varistors (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
PURPOSE: To ensure protection against abnormal voltage by using a non-linear resistance and breaking the resistance on the opening of the secondary side of a current transformer to provide a low impedance.
CONSTITUTION: A non-linear resistance comprises fitting terminals 22 and 23 connected between secondary terminals of a current transformer; non-linear resistance elements 15 and 16 placed between the fitting terminals; a conductive spring 17 connecting the elements with one of the fitting terminals; a container 18 containing the elements and the spring; and an insulating material 26 serving as a spacer between the container and the elements. The resistance is connected between the secondary terminals of the current transformer, and is broken on the opening of the secondary side of the current transformer so as to provide a low impedance and short-circuit between the secondary terminals. When a short-circuit current is flowing due to a system accident and an incoming surge is added to develop an abnormal voltage, the secondary circuit of the current transformer is protected against the abnormal voltage. The dynamic current developed on absorption of the surge is cut off rapidly.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4616578A JPS54137647A (en) | 1978-04-18 | 1978-04-18 | Current transformer protection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4616578A JPS54137647A (en) | 1978-04-18 | 1978-04-18 | Current transformer protection device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54137647A true JPS54137647A (en) | 1979-10-25 |
Family
ID=12739393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4616578A Pending JPS54137647A (en) | 1978-04-18 | 1978-04-18 | Current transformer protection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54137647A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5706161A (en) * | 1993-09-29 | 1998-01-06 | Adam; Russell William | Open circuit protection device |
-
1978
- 1978-04-18 JP JP4616578A patent/JPS54137647A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5706161A (en) * | 1993-09-29 | 1998-01-06 | Adam; Russell William | Open circuit protection device |
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