JPS6295433U - - Google Patents
Info
- Publication number
- JPS6295433U JPS6295433U JP18647285U JP18647285U JPS6295433U JP S6295433 U JPS6295433 U JP S6295433U JP 18647285 U JP18647285 U JP 18647285U JP 18647285 U JP18647285 U JP 18647285U JP S6295433 U JPS6295433 U JP S6295433U
- Authority
- JP
- Japan
- Prior art keywords
- current
- relay device
- ground fault
- prevention function
- fault relay
- 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
- 230000007257 malfunction Effects 0.000 claims 8
- 230000002265 prevention Effects 0.000 claims 8
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第1図はこの考案を具体化した実施例の電気ブ
ロツク回路図、第2図は他の実施例の電気ブロツ
ク回路図、第3図は従来例の電気ブロツク回路図
、第4図はZCTの一次側電流と二次側電流の特
性図である。
1……ZCT、2……動作電流整定回路、3…
…過大入力サージ保護回路、4……フイルター回
路、5……増幅回路、7……零相電流レベル判定
スイツチング回路(零相電流レベル判定回路)、
8……レベル判定スイツチング回路温度補償回路
、9……時限回路、10……パワー回路、11…
…駆動部、15……過大入力サージ保護回路、1
6……フイルター回路、17……増幅回路、19
……第一の一次側レベル判定スイツチング回路、
20……第二の一次側電流レベル判定スイツチン
グ回路、21……一次側電流レベル判定スイツチ
ング回路温度補償回路、23……零相電流合成回
路、A……駆動回路、CT1,CT2,CT3…
…変流器、La,Lb,Lc……配電線。
Fig. 1 is an electrical block circuit diagram of an embodiment embodying this invention, Fig. 2 is an electrical block circuit diagram of another embodiment, Fig. 3 is an electrical block circuit diagram of a conventional example, and Fig. 4 is an electrical block circuit diagram of a ZCT. It is a characteristic diagram of primary side current and secondary side current. 1...ZCT, 2...Operating current setting circuit, 3...
...Excessive input surge protection circuit, 4...Filter circuit, 5...Amplification circuit, 7...Zero-sequence current level judgment switching circuit (zero-sequence current level judgment circuit),
8...Level judgment switching circuit temperature compensation circuit, 9...Time limit circuit, 10...Power circuit, 11...
...Drive unit, 15...Excessive input surge protection circuit, 1
6...Filter circuit, 17...Amplification circuit, 19
...first primary side level judgment switching circuit,
20... Second primary side current level judgment switching circuit, 21... Primary side current level judgment switching circuit temperature compensation circuit, 23... Zero-phase current synthesis circuit, A... Drive circuit, CT1, CT2, CT3...
...Current transformer, La, Lb, Lc... Distribution line.
Claims (1)
電流検出器が出力した信号により零相電流を検出
し、その零相電流のレベル判定を行なう零相電流
レベル判定回路と、同零相電流レベル判定回路の
レベル判定結果に基づいて駆動する駆動回路を備
えた地絡継電装置において、 定格電流を一定割合以上越える負荷電流が前記
配電線に流れた場合にこれを検出する電流センサ
と、前記電流センサの検出に基づいて最終的には
前記駆動回路を動作させないロツク回路とを備え
た誤動作防止機能付き地絡継電装置。 2 前記電流検出器は零相変流器である実用新案
登録請求の範囲第1項に記載の誤動作防止機能付
き地絡継電装置。 3 前記電流検出器は各相の配電線に取着した変
流器である実用新案登録請求の範囲第1項に記載
の誤動作防止機能付き地絡継電装置。 4 前記電流検出器は各相の配電線に取着した変
流器である実用新案登録請求の範囲第1項に記載
の誤動作防止機能付き地絡継電装置。 5 前記電流センサは変流器である実用新案登録
請求の範囲第1項に記載の誤動作防止機能付き地
絡継電装置。 6 前記電流センサはポツケルス素子を利用した
電流センサである実用新案登録請求の範囲第1項
に記載の誤動作防止機能付き地絡継電装置。 7 前記電流センサはホール素子を利用した電流
センサである実用新案登録請求の範囲第1項に記
載の誤動作防止機能付き地絡継電装置。 8 前記電流センサは感磁性素子を利用した電流
センサである実用新案登録請求の範囲第1項に記
載の誤動作防止機能付き地絡継電装置。[Claims for Utility Model Registration] 1. A current detector attached to a three-phase distribution line, and a zero-sequence current that detects zero-sequence current based on the signal output from the current detector and determines the level of the zero-sequence current. In a ground fault relay device equipped with a phase current level determination circuit and a drive circuit that is driven based on the level determination result of the zero-phase current level determination circuit, a load current that exceeds the rated current by a certain percentage flows into the distribution line. What is claimed is: 1. A ground fault relay device with a malfunction prevention function, comprising: a current sensor that detects when a fault occurs; and a lock circuit that ultimately does not operate the drive circuit based on the detection by the current sensor. 2. The ground fault relay device with a malfunction prevention function according to claim 1, wherein the current detector is a zero-phase current transformer. 3. The ground fault relay device with a malfunction prevention function according to claim 1, wherein the current detector is a current transformer attached to the distribution line of each phase. 4. The ground fault relay device with a malfunction prevention function according to claim 1, wherein the current detector is a current transformer attached to the distribution line of each phase. 5. The ground fault relay device with a malfunction prevention function according to claim 1, wherein the current sensor is a current transformer. 6. The ground fault relay device with a malfunction prevention function according to claim 1, wherein the current sensor is a current sensor using a Pockels element. 7. The ground fault relay device with a malfunction prevention function according to claim 1, wherein the current sensor is a current sensor using a Hall element. 8. The ground fault relay device with a malfunction prevention function according to claim 1, wherein the current sensor is a current sensor using a magnetically sensitive element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985186472U JPH0510515Y2 (en) | 1985-12-03 | 1985-12-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985186472U JPH0510515Y2 (en) | 1985-12-03 | 1985-12-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6295433U true JPS6295433U (en) | 1987-06-18 |
JPH0510515Y2 JPH0510515Y2 (en) | 1993-03-15 |
Family
ID=31136061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985186472U Expired - Lifetime JPH0510515Y2 (en) | 1985-12-03 | 1985-12-03 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0510515Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008010495A1 (en) * | 2006-07-19 | 2008-01-24 | Nikko Electric Mfg. Co., Ltd. | Separator and overvoltage protection device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51121750A (en) * | 1975-04-18 | 1976-10-25 | Matsushita Electric Works Ltd | Electric leakage detector |
-
1985
- 1985-12-03 JP JP1985186472U patent/JPH0510515Y2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51121750A (en) * | 1975-04-18 | 1976-10-25 | Matsushita Electric Works Ltd | Electric leakage detector |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008010495A1 (en) * | 2006-07-19 | 2008-01-24 | Nikko Electric Mfg. Co., Ltd. | Separator and overvoltage protection device |
JP5172675B2 (en) * | 2006-07-19 | 2013-03-27 | 株式会社日幸電機製作所 | Separator and overvoltage protection device |
Also Published As
Publication number | Publication date |
---|---|
JPH0510515Y2 (en) | 1993-03-15 |
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