JPS6348334U - - Google Patents
Info
- Publication number
- JPS6348334U JPS6348334U JP14128686U JP14128686U JPS6348334U JP S6348334 U JPS6348334 U JP S6348334U JP 14128686 U JP14128686 U JP 14128686U JP 14128686 U JP14128686 U JP 14128686U JP S6348334 U JPS6348334 U JP S6348334U
- Authority
- JP
- Japan
- Prior art keywords
- ground fault
- disconnector
- transformers
- current
- fault detection
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Description
第１図は本考案による配電系統の地絡保護装置
の一実施例を示す系統図、第２図は本考案に用い
る制御回路を示す図、第３図は従来回路の系統図
、第４図は従来回路の制御回路図である。
１，２……変圧器、３，４……変圧器二次しや
断器、５……母線しや断器、５ａ……補助接点、
６，７……地絡系統選択用地絡検出継電器、８…
…母線用地絡検出継電器、１４，１５……変流器
。
Fig. 1 is a system diagram showing an embodiment of a ground fault protection device for a power distribution system according to the present invention, Fig. 2 is a diagram showing a control circuit used in the present invention, Fig. 3 is a system diagram of a conventional circuit, and Fig. 4 is a control circuit diagram of a conventional circuit. 1, 2...Transformer, 3, 4...Transformer secondary shield breaker, 5...Bus bar shield breaker, 5a...Auxiliary contact,
6, 7...Ground fault detection relay for ground fault system selection, 8...
...Bus bar ground fault detection relay, 14,15...Current transformer.
Claims (1)
毎に二次側しや断器を設け、かつこの二次側しや
断器の負荷側を母線しや断器を介して共通接続し
た配電系統の地絡保護装置において、 前記各変圧器の中性点接地線毎に設けられ２次
回路が互いに和動接続された変流器と、これら変
流器の２次回路毎に設けられ対応する変流器が検
出した地絡電流に応動し前記二次側しや断器の対
応するものを引外す地絡系統選択用の地絡検出継
電器と、前記各変流器の和動接続された２次回路
の共通接続部分に設けられ動作時前記母線しや断
器を引外す母線用地絡検出継電器とを備え、 前記母線しや断器の開閉動作に連動し、このし
や断器と同じ開閉状態となる補助接点を、前記各
地絡系統選択用地絡検出継電器にそれぞれ並列接
続したことを特徴とする配電系統の地絡保護装置
。[Scope of Claim for Utility Model Registration] A secondary windbreaker is provided for each of the two transformers whose secondary neutral points are grounded, and the load side of the secondary windbreaker is connected to the bus bar. In a ground fault protection device for a distribution system that is commonly connected via a disconnector or disconnector, a current transformer is provided for each neutral point grounding wire of each of the transformers, and the secondary circuits are harmonically connected to each other, and these current transformers. a ground fault detection relay for ground fault system selection that is provided for each secondary circuit of the device and trips a corresponding one of the secondary side disconnectors in response to a ground fault current detected by a corresponding current transformer; a bus ground fault detection relay that is provided at a common connection part of the harmonically connected secondary circuits of each of the current transformers and trips the bus line disconnector during operation; An earth fault protection device for a power distribution system, characterized in that auxiliary contacts that are linked to the switch and open and close in the same state as the disconnector are connected in parallel to each of the ground fault detection relays for selecting the fault system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14128686U JPH0323802Y2 (en) | 1986-09-17 | 1986-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14128686U JPH0323802Y2 (en) | 1986-09-17 | 1986-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6348334U true JPS6348334U (en) | 1988-04-01 |
| JPH0323802Y2 JPH0323802Y2 (en) | 1991-05-23 |
Family
ID=31048923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14128686U Expired JPH0323802Y2 (en) | 1986-09-17 | 1986-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323802Y2 (en) |
-
1986
- 1986-09-17 JP JP14128686U patent/JPH0323802Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0323802Y2 (en) | 1991-05-23 |
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