JPS59119739U - Differential protection device for power transformers - Google Patents
Differential protection device for power transformersInfo
- Publication number
- JPS59119739U JPS59119739U JP1134583U JP1134583U JPS59119739U JP S59119739 U JPS59119739 U JP S59119739U JP 1134583 U JP1134583 U JP 1134583U JP 1134583 U JP1134583 U JP 1134583U JP S59119739 U JPS59119739 U JP S59119739U
- Authority
- JP
- Japan
- Prior art keywords
- relay
- phase
- protection device
- breaker
- differential protection
- 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
Landscapes
- Protection Of Transformers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の電力用変圧器の差動保護装置の引外し継
電器回路結線図、第２図は本考案による電力用変圧器の
差動保護装置の引外し継電器回路の結線図である。
１、 ２． ３・・・比率差動継電器の各相席開接点、
ｌａ、 ２ａ、 ３ａ・・・比率差動継電器のもう
一つの各相席開接点、５・・・しゃ断器と連動するスイ
ッチ、６・・・限時動作継電器。FIG. 1 is a wiring diagram of a tripping relay circuit of a conventional power transformer differential protection device, and FIG. 2 is a wiring diagram of a tripping relay circuit of a power transformer differential protection device according to the present invention. 1, 2. 3...Each phase opening contact of the ratio differential relay,
la, 2a, 3a...Another opening contact for each phase of the ratio differential relay, 5...Switch interlocked with the circuit breaker, 6...Time-limited operation relay.
Claims (1)
備え、並列に接続した前記各相比率差動継電器接点と前
記しゃ断器を引外す引外し継電器とを直列に接続した電
力用変圧器の差動保護装置において、前記各相比率差動
継電器の接点と直列に他の相の比率差動継電器のもう一
つの接点とをそれぞれ直列に接続するとともに、前記し
ゃ断器に連動するスイッチにより動作し該電力用変圧器
の励磁突入電流が流れている時間だけ遅れる限時動作継
電器を設け、該継電器により前記もう一つの接点を短絡
するよう接続したことを特徴とする電力用変圧器の差動
保護装置。A power transformer comprising a breaker inserted on the power supply side and a ratio differential relay for each phase, and in which the contacts of each phase ratio differential relay connected in parallel and a tripping relay for tripping the breaker are connected in series. In the differential protection device for the device, the contact of each phase ratio differential relay is connected in series with another contact of the ratio differential relay of the other phase, and a switch interlocked with the breaker A differential for a power transformer, characterized in that a time-limited relay is provided which operates and is delayed by the time that the excitation inrush current of the power transformer is flowing, and the relay is connected to short-circuit the other contact. Protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1134583U JPS59119739U (en) | 1983-01-28 | 1983-01-28 | Differential protection device for power transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1134583U JPS59119739U (en) | 1983-01-28 | 1983-01-28 | Differential protection device for power transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59119739U true JPS59119739U (en) | 1984-08-13 |
Family
ID=30142773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1134583U Pending JPS59119739U (en) | 1983-01-28 | 1983-01-28 | Differential protection device for power transformers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59119739U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51126207A (en) * | 1975-03-18 | 1976-11-04 | Macedo Pedro B | Glass composite |
| JPS53102324A (en) * | 1976-12-30 | 1978-09-06 | Macedo Pedro B | Glass compositions and production thereof |
| JPS56145125A (en) * | 1980-04-04 | 1981-11-11 | Sumitomo Electric Ind Ltd | Preparation of glass body having graded refractive index distribution |
-
1983
- 1983-01-28 JP JP1134583U patent/JPS59119739U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51126207A (en) * | 1975-03-18 | 1976-11-04 | Macedo Pedro B | Glass composite |
| JPS53102324A (en) * | 1976-12-30 | 1978-09-06 | Macedo Pedro B | Glass compositions and production thereof |
| JPS56145125A (en) * | 1980-04-04 | 1981-11-11 | Sumitomo Electric Ind Ltd | Preparation of glass body having graded refractive index distribution |
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