JPH0336968U - - Google Patents
Info
- Publication number
- JPH0336968U JPH0336968U JP9806089U JP9806089U JPH0336968U JP H0336968 U JPH0336968 U JP H0336968U JP 9806089 U JP9806089 U JP 9806089U JP 9806089 U JP9806089 U JP 9806089U JP H0336968 U JPH0336968 U JP H0336968U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- dielectric loss
- loss tangent
- specimen
- optical
- 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
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000013307 optical fiber Substances 0.000 claims 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Measuring Phase Differences (AREA)
Description
第１図は本考案による誘電正接測定用の電圧位
相検出器の一実施例を示すブロツク構成図、第２
図は本考案による誘電正接測定用の電圧位相検出
器の一実施例を示すブロツク構成図、第３図はコ
ンデンサ分圧方式の電圧位相検出器の従来構成を
示す回路図、第４図は抵抗分圧方式の電圧位相検
出器の従来構成を示す回路図である。
１……電力ケーブル、１０……導体、２０，５
０……電圧位相検出器、２１……電極、２２……
コンデンサ、２３……電気−光変換器、２４……
光ケーブル、２５……光−電気変換器、２６……
送信機、２７……受信機、３０……誘電正接測定
器、４０……電流位相検出器。
Fig. 1 is a block diagram showing an embodiment of a voltage phase detector for measuring dielectric loss tangent according to the present invention;
The figure is a block configuration diagram showing an embodiment of the voltage phase detector for measuring dielectric loss tangent according to the present invention, Figure 3 is a circuit diagram showing the conventional configuration of a voltage phase detector using a capacitor voltage division method, and Figure 4 is a resistor. 1 is a circuit diagram showing a conventional configuration of a voltage phase detector of a voltage division type. 1...Power cable, 10...Conductor, 20,5
0... Voltage phase detector, 21... Electrode, 22...
Capacitor, 23... Electric-optical converter, 24...
Optical cable, 25... Optical-electrical converter, 26...
Transmitter, 27... Receiver, 30... Dielectric loss tangent measuring device, 40... Current phase detector.
Claims (1)
等の供試体において印加電圧の位相と供試体に流
れる電流の位相との差を求めることによつて供試
体の誘電正接を測定する誘電正接測定器用の電圧
位相検出器において、 対地間に所定の浮遊容量を有する電極と、この
電極と前記供試体の間に接続されるコンデンサと
、このコンデンサの両端の電圧信号を光信号に変
換する電気−光変換器と、この電気−光変換器か
ら出力される光信号を伝達する光フアイバと、こ
の光フアイバによつて伝送された光信号を電圧信
号に変換する光−電気変換器とから成り、この光
−電気変換器から出力される電圧信号を供試体の
誘電正接測定用に出力することを特徴とする誘電
正接測定器用の電圧位相検出器。 (2) 所定の電圧が印加されている電力ケーブル
等の供試体において印加電圧の位相と供試体に流
れる電流の位相との差を求めることによつて供試
体の誘電正接を測定する誘電正接測定器用の電圧
位相検出器において、 対地間に所定の浮遊容量を有する電極と、この
電極と前記供試体の間に接続されるコンデンサと
、このコンデンサの両端の電圧信号を電波に変換
して送信する送信機と、この送信機から受信した
電波を電圧信号に変換する受信機とから成り、こ
の受信機から出力される電圧信号を供試体の誘電
正接測定用に出力することを特徴とする誘電正接
測定器用の電圧位相検出器。[Claims for Utility Model Registration] (1) In a test object such as a power cable to which a predetermined voltage is applied, the difference between the phase of the applied voltage and the phase of the current flowing through the test object is determined. A voltage phase detector for a dielectric loss tangent measuring device that measures dielectric loss tangent includes an electrode having a predetermined stray capacitance to ground, a capacitor connected between this electrode and the specimen, and a voltage signal across the capacitor. an electrical-to-optical converter that converts the optical signal into an optical signal; an optical fiber that transmits the optical signal output from the electrical-optical converter; and an optical fiber that converts the optical signal transmitted by the optical fiber into a voltage signal. A voltage phase detector for a dielectric loss tangent measuring device, comprising: - an electric converter, and outputting a voltage signal output from the opto-electric converter for measuring the dielectric loss tangent of a specimen. (2) Dissipation tangent measurement that measures the dielectric loss tangent of a specimen such as a power cable to which a predetermined voltage is applied by determining the difference between the phase of the applied voltage and the phase of the current flowing through the specimen. A dexterous voltage phase detector consists of an electrode with a predetermined stray capacitance to ground, a capacitor connected between this electrode and the specimen, and a voltage signal across the capacitor that is converted into radio waves and transmitted. A dielectric loss tangent comprising a transmitter and a receiver that converts the radio waves received from the transmitter into a voltage signal, and outputs the voltage signal output from the receiver for measuring the dielectric loss tangent of the specimen. Voltage phase detector for measuring instruments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9806089U JPH0336968U (en) | 1989-08-23 | 1989-08-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9806089U JPH0336968U (en) | 1989-08-23 | 1989-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0336968U true JPH0336968U (en) | 1991-04-10 |
Family
ID=31647177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9806089U Pending JPH0336968U (en) | 1989-08-23 | 1989-08-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0336968U (en) |
-
1989
- 1989-08-23 JP JP9806089U patent/JPH0336968U/ja active Pending
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