JPS636688Y2 - - Google Patents
Info
- Publication number
- JPS636688Y2 JPS636688Y2 JP3762081U JP3762081U JPS636688Y2 JP S636688 Y2 JPS636688 Y2 JP S636688Y2 JP 3762081 U JP3762081 U JP 3762081U JP 3762081 U JP3762081 U JP 3762081U JP S636688 Y2 JPS636688 Y2 JP S636688Y2
- Authority
- JP
- Japan
- Prior art keywords
- current
- conductor
- current transformer
- diode
- fuse
- 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.)
- Expired
Links
- 239000004020 conductor Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measurement Of Current Or Voltage (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
【考案の詳細な説明】
本考案は、船舶等の振動の大きい設備で使用さ
れる半導体整流装置等に付属する耐振逆電流検出
装置に関する。[Detailed Description of the Invention] The present invention relates to a vibration-proof reverse current detection device attached to a semiconductor rectifier device used in equipment with large vibrations such as a ship.
一般に、半導体整流装置において、直流導体に
逆電流検出器を取付け、前記整流装置に内部故障
が発生した際に、前記直流導体に正常時とは逆方
向の事故電流が流れることに着目した故障検出装
置が知られている。すなわち、この種の故障検出
装置は直流導体に設けられた変流器と、この変流
器の両端子間に設けられた抵抗体と、この抵抗体
と並列に設けられた電流継電器と、この電流継電
器に直列に接続されたダイオードとから構成され
る。半導体整流装置が正常であると、直流導体に
は順電流が流れ、変流器の２次側には変流器が飽
和するまで、順電流に比例した電流が流れる。し
かし、この電流はダイオードにより阻止されて、
電流継電器には流れない。ところが、この整流装
置に故障が発生すると、直流導体に逆電流が流
れ、変流器の２次側には変流器が飽和するまで、
この逆電流に比例した電流が流れる。この電流は
抵抗体と、電流継電器とに分流されて、この電流
継電器を動作させ、故障が検出される。ところ
が、この電流継電器には電磁形とトランジスタ形
との２種類があるが、電磁形継電器は機械的接点
を有するために、耐振性が劣るという欠点があ
る。従つて、船舶等の振動の大きい設備では使用
が不可能であつた。また、トランジスタ形継電器
は耐振性が優れているが、専用の補助電源を付属
する必要があるために、装置が複雑化し、高価格
となるおそれがあつた。 Generally, in a semiconductor rectifier, a fault detection device is known that is based on the fact that, when an internal fault occurs in the rectifier, a fault current flows in the DC conductor in the opposite direction to that in normal operation, by attaching a reverse current detector to the DC conductor. That is, this type of fault detection device is composed of a current transformer attached to the DC conductor, a resistor connected between both terminals of the current transformer, a current relay connected in parallel with the resistor, and a diode connected in series to the current relay. When the semiconductor rectifier is normal, a forward current flows in the DC conductor, and a current proportional to the forward current flows in the secondary side of the current transformer until the current transformer is saturated. However, this current is blocked by the diode,
However, if a fault occurs in this rectifier, a reverse current flows in the DC conductor, and the secondary side of the current transformer is saturated.
A current proportional to this reverse current flows. This current is divided between a resistor and a current relay, which operates the current relay and detects the fault. However, there are two types of current relays: electromagnetic and transistor types. Electromagnetic relays have the disadvantage of being less resistant to vibration because they have mechanical contacts. As a result, they cannot be used in facilities subject to large vibrations, such as ships. Moreover, although transistor relays have excellent vibration resistance, they require a dedicated auxiliary power supply, which can make the device complicated and expensive.
本考案は、上述の点に鑑み、従来技術の欠点を
除き構成が簡単で、耐振性に優れた耐振逆電流検
出装置を提供することを目的とする。 In view of the above-mentioned points, it is an object of the present invention to provide a vibration-resistant reverse current detection device that eliminates the drawbacks of the prior art, has a simple configuration, and has excellent vibration resistance.
このような目的は本考案によれば、直流導体中
の電流の変化を検出する変流器と、該変流器の出
力端子間に接続された抵抗体と、該変流器の出力
端子間にダイオードを介して接続された溶断時に
動作する接点を有するトリガヒユーズとを備え、
前記ダイオードが前記直流導体中の正規の電流と
は逆方向の電流が流れたときにのみ導通する方向
に前記トリガヒユーズと直列接続されることによ
り達成される。 According to the present invention, such purpose is to provide a current transformer that detects changes in current in a DC conductor, a resistor connected between the output terminals of the current transformer, and a resistor connected between the output terminals of the current transformer. and a trigger fuse having a contact that operates when the fuse is blown, connected through a diode to the
This is achieved by connecting the diode in series with the trigger fuse in such a direction that it conducts only when a current flows in a direction opposite to the normal current in the DC conductor.
次に、本考案の一実施例を図面に基づき、詳細
に説明する。 Next, one embodiment of the present invention will be described in detail based on the drawings.
図は本考案の一実施例の概略構成図を示す。図
において耐振逆電流検出装置１は直流導体２に設
けられた変流器３と、この変流器３の端子７，８
間に接続された抵抗体４と、この抵抗体４と並列
に設けられた耐振形検出手段、本実施例ではトリ
ガヒユーズ６およびこのトリガヒユーズ６と直列
に接続されたダイオード５とから構成されてい
る。このトリガヒユーズ６は弾性体９と、ヒユー
ズ線１０と、ヒユーズ線１０の切断によつて弾性
体によつて閉路される警報接点１１とからなり、
常時、弾性体９はヒユーズ線１０により引張られ
ているため、警報接点１１は開放状態にある。従
つて、このヒユーズ線１０が電流により溶断しな
い限り、トリガヒユーズ６は誤動作をすることな
く、確実で、耐振性に優れている。 The figure shows a schematic configuration diagram of an embodiment of the present invention. In the figure, the vibration-resistant reverse current detection device 1 includes a current transformer 3 provided on a DC conductor 2, and terminals 7 and 8 of this current transformer 3.
It consists of a resistor 4 connected between the two, a vibration-resistant detection means provided in parallel with the resistor 4, and in this embodiment, a trigger fuse 6 and a diode 5 connected in series with the trigger fuse 6. There is. This trigger fuse 6 consists of an elastic body 9, a fuse wire 10, and an alarm contact 11 that is closed by the elastic body when the fuse wire 10 is cut.
Since the elastic body 9 is always pulled by the fuse wire 10, the alarm contact 11 is in an open state. Therefore, unless the fuse wire 10 is blown by the current, the trigger fuse 6 does not malfunction, is reliable, and has excellent vibration resistance.
図示されていない半導体整流装置が正常であれ
ば、直流導体２には順電流I1が投入され、変流器
３が直流飽和するまで、順電流I1に比例した電流
I2が抵抗体４に流れる。この際、トリガヒユーズ
６には、逆向きに接続されたダイオード５によ
り、電流が阻止されて流れない。なお、変流器３
はやがて直流飽和するから、抵抗体４を流れる電
流I2も零になる。ところが、この半導体整流装置
に内部故障が発生し、直流導体２に逆電流I1が
発生すると、変流器３が直流飽和するまで、逆電
流I1に比例した逆電流が変流器３の２次側に発
生し、抵抗体４と、トリガヒユーズ６とに分流す
る。従つて、トリガヒユーズ６には、ダイオード
５を介して、逆電流I2が流れる。この逆電流I2
によりヒユーズ線１０が溶断すれば、警報接点１
１が閉鎖され、前記半導体整流装置の内部故障が
警報接点１１に接続された図示しない警報手段に
よつて検出される。 If the semiconductor rectifier (not shown) is normal, a forward current I 1 is applied to the DC conductor 2, and a current proportional to the forward current I 1 is applied to the DC conductor 2 until the current transformer 3 reaches DC saturation.
I 2 flows into the resistor 4. At this time, current does not flow through the trigger fuse 6 because it is blocked by the diode 5 connected in the opposite direction. In addition, current transformer 3
Since the current I 2 eventually reaches DC saturation, the current I 2 flowing through the resistor 4 also becomes zero. However, when an internal failure occurs in this semiconductor rectifier and a reverse current I1 is generated in the DC conductor 2, a reverse current proportional to the reverse current I1 flows through the current transformer 3 until the current transformer 3 reaches DC saturation. This occurs on the secondary side, and the current is divided into the resistor 4 and the trigger fuse 6. Therefore, a reverse current I 2 flows through the trigger fuse 6 via the diode 5. This reverse current I 2
If the fuse wire 10 is blown, the alarm contact 1
1 is closed, and an internal failure of the semiconductor rectifier is detected by an alarm means (not shown) connected to the alarm contact 11.
以上に説明するように本考案によれば、直流導
体に設けられた変流器と、この変流器に接続され
逆電流を検出するトリガヒユーズとを備えること
により、補助電源を設けることなくその構成が簡
単で、耐振性に優れてその動作が確実であるとい
う効果を有する。 As explained above, according to the present invention, by including a current transformer provided on a DC conductor and a trigger fuse connected to this current transformer to detect reverse current, the present invention can be used without providing an auxiliary power source. The structure is simple, the vibration resistance is excellent, and the operation is reliable.
なお、抵抗体としてリアクタを使用するも本考
案の一実施態様である。 Note that using a reactor as the resistor is also an embodiment of the present invention.
図は本考案の一実施例の概略構成図である。
１……耐振逆電流検出装置、２……直流導体、
３……変流器、５……ダイオード、６……トリガ
ヒユーズ、９……弾性体、１０……ヒユーズ線、
１１……警報接点。
The figure is a schematic configuration diagram of an embodiment of the present invention. 1... Vibration proof reverse current detection device, 2... DC conductor,
3... Current transformer, 5... Diode, 6... Trigger fuse, 9... Elastic body, 10... Fuse wire,
11...Alarm contact.
Claims (1)
該変流器の出力端子間に接続された抵抗体と、該
変流器の出力端子間にダイオードを介して接続さ
れ溶断時に動作する接点を有するトリガヒユーズ
とを備え、前記ダイオードが前記直流導体中に正
規の電流とは逆方向の電流が流れたときにのみ導
通する方向に前記トリガヒユーズと直列接続され
たことを特徴とする耐振逆電流検出装置。 a current transformer that detects changes in current in a DC conductor;
a resistor connected between the output terminals of the current transformer; and a trigger fuse having a contact connected through a diode between the output terminals of the current transformer and activated when blown, the diode being connected to the DC conductor. A vibration-resistant reverse current detection device, characterized in that the device is connected in series with the trigger fuse in a direction that conducts only when a current in a direction opposite to the normal current flows through the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3762081U JPS636688Y2 (en) | 1981-03-19 | 1981-03-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3762081U JPS636688Y2 (en) | 1981-03-19 | 1981-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57151575U JPS57151575U (en) | 1982-09-22 |
| JPS636688Y2 true JPS636688Y2 (en) | 1988-02-25 |
Family
ID=29834808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3762081U Expired JPS636688Y2 (en) | 1981-03-19 | 1981-03-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS636688Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010197172A (en) * | 2009-02-24 | 2010-09-09 | Toshiba Mitsubishi-Electric Industrial System Corp | Current detector |
-
1981
- 1981-03-19 JP JP3762081U patent/JPS636688Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57151575U (en) | 1982-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3857069A (en) | Ground fault circuit interrupter and module therefor | |
| JPS636688Y2 (en) | ||
| KR950025443A (en) | Current sensor | |
| JPS603992Y2 (en) | Preheating plug abnormality detection device for diesel power generation equipment | |
| JPS5556495A (en) | A.c. motor controller | |
| JPH0735282Y2 (en) | Leakage relay test circuit | |
| JPS623638Y2 (en) | ||
| JPS592631Y2 (en) | emergency alarm device | |
| JPH0222705Y2 (en) | ||
| JP2781866B2 (en) | Abnormality detection device in hoist operation circuit | |
| JPH074719Y2 (en) | Gas leak alarm device | |
| JPS6029039Y2 (en) | Smoke detectors | |
| JPS636690Y2 (en) | ||
| JPH0363086U (en) | ||
| JPS643971Y2 (en) | ||
| SU635534A1 (en) | Arrangement for checking cutout operability in ac circuits | |
| JPH02110322U (en) | ||
| KR840002083Y1 (en) | Emergency circuit | |
| JPH01179281U (en) | ||
| SU148843A1 (en) | The sensor opens the contacts that turn off the mechanical rectifier at a given moment on the low current step | |
| SU1056239A1 (en) | Fire-alarm device | |
| JP2586560Y2 (en) | Malfunction detection circuit of protection relay | |
| JPS6217852Y2 (en) | ||
| JPH0582131B2 (en) | ||
| JPS59173564A (en) | Automatic stopper for engine |