JPH0339342U - - Google Patents
Info
- Publication number
- JPH0339342U JPH0339342U JP9625389U JP9625389U JPH0339342U JP H0339342 U JPH0339342 U JP H0339342U JP 9625389 U JP9625389 U JP 9625389U JP 9625389 U JP9625389 U JP 9625389U JP H0339342 U JPH0339342 U JP H0339342U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- motor
- protection circuit
- shield
- breaker
- 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
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Protection Of Generators And Motors (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来のサージ保護回路の一例を示す回路図、
第３図は従来のサージ保護回路の他の例を示す回
路図、第４図はサージ波頭峻度低減を考慮したサ
ージ保護回路の一例を示す回路図、第５図はサー
ジ波頭峻度低減に効果のあるＬ−Ｃの関係を示す
Ｌ−Ｃ特性図である。
１……高圧電源母線、２……真空しや断器、４
……高圧電動機、５……非直線抵抗素子形サージ
アブソーバー、７……直列リアクトル、１３……
高圧ケーブル、１６……Ｃ−Ｒ形サージアブソー
バー。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing an example of a conventional surge protection circuit.
Figure 3 is a circuit diagram showing another example of a conventional surge protection circuit, Figure 4 is a circuit diagram showing an example of a surge protection circuit that considers surge wave front steepness reduction, and Figure 5 is a circuit diagram showing an example of a surge protection circuit that takes into account surge wave front steepness reduction. FIG. 3 is an LC characteristic diagram showing an effective LC relationship. 1... High voltage power supply bus bar, 2... Vacuum shield disconnector, 4
...High voltage motor, 5...Non-linear resistance element type surge absorber, 7...Series reactor, 13...
High voltage cable, 16...C-R type surge absorber.
Claims (1)
圧電動機を保護する電動機保護回路において、 高圧電源母線に、しや断器および所定長さの高
圧ケーブルを順次直列に介して高圧電動機を接続
し、前記高圧ケーブルと高圧電動機の共通接続点
と接地間に、所定値に設定されたコンデンサおよ
び抵抗を直列接続して成るＣ−Ｒ形サージアブソ
ーバーを接続したことを特徴とする電動機保護回
路。[Claim for Utility Model Registration] In a motor protection circuit that protects a high-voltage motor from switching surges caused by opening and closing of a shield breaker, a shield breaker and a high-voltage cable of a predetermined length are serially connected to a high-voltage power supply bus. A high-voltage motor is connected to the high-voltage motor, and a C-R type surge absorber comprising a capacitor and a resistor set to a predetermined value are connected in series between the common connection point of the high-voltage cable and the high-voltage motor and ground. motor protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9625389U JPH0339342U (en) | 1989-08-17 | 1989-08-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9625389U JPH0339342U (en) | 1989-08-17 | 1989-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0339342U true JPH0339342U (en) | 1991-04-16 |
Family
ID=31645472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9625389U Pending JPH0339342U (en) | 1989-08-17 | 1989-08-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339342U (en) |
-
1989
- 1989-08-17 JP JP9625389U patent/JPH0339342U/ja active Pending
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