JPH01104568U - - Google Patents
Info
- Publication number
- JPH01104568U JPH01104568U JP19881787U JP19881787U JPH01104568U JP H01104568 U JPH01104568 U JP H01104568U JP 19881787 U JP19881787 U JP 19881787U JP 19881787 U JP19881787 U JP 19881787U JP H01104568 U JPH01104568 U JP H01104568U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- time
- partial discharge
- detection device
- continuous monitoring
- 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 Relating To Insulation (AREA)
Description
第１図は本考案による部分放電検出装置の一実
施例を示すブロツク回路図、第２図は部分放電を
検出して警報を出す場合のタイミング図、第３図
は従来例による部分放電検出装置のブロツク回路
図を示す。
第１図乃至第３図に於て同一の記号は同一の部
品または相当部分を示す。１１……受信部、３１
……検波回路、１２，３３……レベル判定回路、
１３……インターバル時間クロツク回路、１４…
…時刻系（パルス発信器）、１５……時刻計数器
（パルスカウンタ）。
Fig. 1 is a block circuit diagram showing an embodiment of the partial discharge detection device according to the present invention, Fig. 2 is a timing diagram when detecting partial discharge and issuing an alarm, and Fig. 3 is a partial discharge detection device according to the conventional example. The block circuit diagram is shown. The same symbols in FIGS. 1 to 3 indicate the same parts or corresponding parts. 11... Receiving section, 31
...Detection circuit, 12,33...Level judgment circuit,
13...Interval time clock circuit, 14...
...Time system (pulse transmitter), 15...Time counter (pulse counter).
Claims (1)
放電を検出する部分放電検出装置に於て、前記部
分放電により生じた信号波を電気信号として取出
し、この信号波のレベル判定を行うレベル判定回
路と、このレベル判定回路からのパルス信号によ
り、前記部分放電により生じる信号周期より長い
時間継続して信号を出力するインターバル時間ク
ロツク回路と、このインターバル時間クロツク回
路からの出力信号を受けて起動し、該出力信号の
消滅によりセツトされる時刻系並にこの時刻系か
らの時刻信号を予め設定された継続監視時間計数
する時刻計数器からなり、前記時刻計数器が前記
時刻系からの時刻信号を前記継続監視時間計数し
たときに前記時刻計数器から出力される信号によ
り警報を発する如くしたことを特徴とする部分放
電検出装置。 In a partial discharge detection device that detects partial discharge generated in an electrical device to which an alternating current voltage is applied, a level determination circuit extracts a signal wave generated by the partial discharge as an electrical signal and determines the level of this signal wave. and an interval time clock circuit which continuously outputs a signal for a period longer than the signal period caused by the partial discharge by the pulse signal from the level determination circuit; It consists of a time system that is set when the output signal disappears, and a time counter that counts the time signal from this time system for a preset continuous monitoring time, and the time counter converts the time signal from the time system into the above-mentioned one. 1. A partial discharge detection device characterized in that an alarm is issued by a signal output from the time counter when a continuous monitoring time is counted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19881787U JPH0622228Y2 (en) | 1987-12-29 | 1987-12-29 | Partial discharge detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19881787U JPH0622228Y2 (en) | 1987-12-29 | 1987-12-29 | Partial discharge detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01104568U true JPH01104568U (en) | 1989-07-14 |
| JPH0622228Y2 JPH0622228Y2 (en) | 1994-06-08 |
Family
ID=31489302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19881787U Expired - Lifetime JPH0622228Y2 (en) | 1987-12-29 | 1987-12-29 | Partial discharge detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622228Y2 (en) |
-
1987
- 1987-12-29 JP JP19881787U patent/JPH0622228Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622228Y2 (en) | 1994-06-08 |
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