JPH027740U - - Google Patents
Info
- Publication number
- JPH027740U JPH027740U JP8219288U JP8219288U JPH027740U JP H027740 U JPH027740 U JP H027740U JP 8219288 U JP8219288 U JP 8219288U JP 8219288 U JP8219288 U JP 8219288U JP H027740 U JPH027740 U JP H027740U
- Authority
- JP
- Japan
- Prior art keywords
- current transformer
- transformer
- banks
- bus bar
- parallel
- 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
- 230000007935 neutral effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の実施例を示す単相回路図、第
２図は同実施例の要部を示す３相回路図、第３図
は同実施例の作用を示す回路図、第４図は従来例
を示す単相回路図である。
ＮＴ…ネツトワークトランス、１…第１の変流
器、２…第２の変流器、３…差動継電器、４…補
償変流器。
Fig. 1 is a single-phase circuit diagram showing an embodiment of the present invention, Fig. 2 is a three-phase circuit diagram showing the main parts of the embodiment, Fig. 3 is a circuit diagram showing the operation of the embodiment, and Fig. 4. is a single-phase circuit diagram showing a conventional example. NT...Network transformer, 1...First current transformer, 2...Second current transformer, 3...Differential relay, 4...Compensation current transformer.
Claims (1)
スを備えたバンクを複数並列に接続してなる受変
電設備を地絡から保護する装置において、 各トランスの２次側の中性相ラインに第１の変
流器を設置し、前記各トランスの中性点から分岐
ラインを引き出して、それらを共通に接地すると
共に、各分岐ラインには第２の変流器を接地し、 各バンク毎に、正常時における第１の変流器及
び第２の変流器の検出電流の差を補償するための
、第１の変流器及び第２の変流器の一方及び他方
に夫々１次側及び２次側を接続した補償変流器と
、この補償変流器の２次側に設けられた差動継電
器とを設けたことを特徴とする地絡保護装置。[Claims for Utility Model Registration] In a device for protecting power receiving and substation equipment from ground faults, which comprises a plurality of banks each having a transformer connected in parallel between a high voltage side bus bar and a low voltage side bus bar, two banks of each transformer are connected in parallel. A first current transformer is installed on the neutral phase line on the next side, branch lines are drawn out from the neutral point of each transformer, and they are commonly grounded, and a second current transformer is installed in each branch line. a first current transformer and a second current transformer for each bank to compensate for the difference in detected current between the first current transformer and the second current transformer during normal operation; A compensation current transformer having a primary side and a secondary side connected to one and the other side of the compensation current transformer, respectively, and a differential relay provided on the secondary side of the compensation current transformer are provided. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8219288U JPH027740U (en) | 1988-06-21 | 1988-06-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8219288U JPH027740U (en) | 1988-06-21 | 1988-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH027740U true JPH027740U (en) | 1990-01-18 |
Family
ID=31306956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8219288U Pending JPH027740U (en) | 1988-06-21 | 1988-06-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH027740U (en) |
-
1988
- 1988-06-21 JP JP8219288U patent/JPH027740U/ja active Pending
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