JPS5546181A - Measuring method of dielectric loss tangent for power cable - Google Patents
Measuring method of dielectric loss tangent for power cableInfo
- Publication number
- JPS5546181A JPS5546181A JP12058278A JP12058278A JPS5546181A JP S5546181 A JPS5546181 A JP S5546181A JP 12058278 A JP12058278 A JP 12058278A JP 12058278 A JP12058278 A JP 12058278A JP S5546181 A JPS5546181 A JP S5546181A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric loss
- loss tangent
- measuring unit
- measuring method
- power cable
- 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
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
PURPOSE: To enable the dielectric loss tangent measurement with high accuracy for measuring personnel with safe condition, by performing the dial operation of inverse Shearing bridge from the point isolated to the measuring unit.
CONSTITUTION: The operation side 1 and the measuring unit 2 are sectioned in isolation, and the electric coupling with these is made by the light guide 3a such as optical fiber. When the switch S1 is depressed at the operation side 1, LED 4a illuminates and emitted on the guide 3a. The photo transistor 5a of the measuring unit 2 is operated to activate the relay A. Thus, the unit 6a driving and controlling the step motors M1, M2,...,Mn for dial operation is activated. As a result, the dielectric loss tangent with high accuracy can be measured safely.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12058278A JPS5546181A (en) | 1978-09-29 | 1978-09-29 | Measuring method of dielectric loss tangent for power cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12058278A JPS5546181A (en) | 1978-09-29 | 1978-09-29 | Measuring method of dielectric loss tangent for power cable |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5546181A true JPS5546181A (en) | 1980-03-31 |
Family
ID=14789838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12058278A Pending JPS5546181A (en) | 1978-09-29 | 1978-09-29 | Measuring method of dielectric loss tangent for power cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5546181A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127180A (en) * | 1982-01-25 | 1983-07-28 | Nippon Telegr & Teleph Corp <Ntt> | Electron tube life tester |
JPS58142266A (en) * | 1982-02-19 | 1983-08-24 | Nippon Telegr & Teleph Corp <Ntt> | Power source unit for measuring electron tube |
JPS6136621U (en) * | 1984-08-10 | 1986-03-06 | 木村寝台工業株式会社 | Drive mechanism for raising and lowering the floor in a supine table |
JPH0624312U (en) * | 1992-08-28 | 1994-03-29 | 古河電気工業株式会社 | Prefabricated overhead wire for drum winding |
-
1978
- 1978-09-29 JP JP12058278A patent/JPS5546181A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127180A (en) * | 1982-01-25 | 1983-07-28 | Nippon Telegr & Teleph Corp <Ntt> | Electron tube life tester |
JPS58142266A (en) * | 1982-02-19 | 1983-08-24 | Nippon Telegr & Teleph Corp <Ntt> | Power source unit for measuring electron tube |
JPS6136621U (en) * | 1984-08-10 | 1986-03-06 | 木村寝台工業株式会社 | Drive mechanism for raising and lowering the floor in a supine table |
JPH0624312U (en) * | 1992-08-28 | 1994-03-29 | 古河電気工業株式会社 | Prefabricated overhead wire for drum winding |
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