JPH05299274A - Current transformer - Google Patents
Current transformerInfo
- Publication number
- JPH05299274A JPH05299274A JP4101372A JP10137292A JPH05299274A JP H05299274 A JPH05299274 A JP H05299274A JP 4101372 A JP4101372 A JP 4101372A JP 10137292 A JP10137292 A JP 10137292A JP H05299274 A JPH05299274 A JP H05299274A
- Authority
- JP
- Japan
- Prior art keywords
- holes
- bobbins
- gap size
- bobbin
- current transformer
- 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
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、回路遮断器等に内蔵
する変流器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current transformer incorporated in a circuit breaker or the like.
【０００２】[0002]
【従来の技術】従来、回路遮断器の過電流を検出する手
段として、バイメタルや瞬時式電磁石を使用せずに、変
流器と引外し装置（釈放リレー）を使用するものがあ
る。これは、各相の変流器を回路遮断器に内蔵して、電
路の電流を電圧に変換しその信号を過電流検出回路に送
り、その出力信号が設定値レベルを超えると引外し装置
を駆動させて電路を遮断するようになっている。この場
合、回路遮断器の定格が変わったときには、設定値レベ
ルを変化させないように、変流器の形状を変えたり、巻
線数を変えたり、あるいは２次側の負担抵抗を変えたり
して対応していた。2. Description of the Related Art Conventionally, as means for detecting an overcurrent in a circuit breaker, there is one that uses a current transformer and a trip device (release relay) without using a bimetal or a momentary electromagnet. This is because the current breaker for each phase is built in the circuit breaker, the current in the circuit is converted to a voltage, and the signal is sent to the overcurrent detection circuit.When the output signal exceeds the set value level, the trip device is activated. It is designed to be driven to cut off the electric circuit. In this case, when the rating of the circuit breaker changes, change the shape of the current transformer, change the number of windings, or change the burden resistance on the secondary side so as not to change the set value level. It corresponded.
【０００３】[0003]
【発明が解決しようとする課題】しかし、引外し装置お
よび引外し回路等の電源回路は、電路の相間電圧を入力
して整流しているため、電路に短絡電流が流れた場合、
相間電圧が低下して電圧が不安定になり引外し装置が動
作しない場合があるという欠点があった。また、大電流
が流れたときに変流器が飽和するため検出できる電流値
に限界があり、また短絡電流が流れた後には残留磁束密
度のために変流器の出力信号の誤差があり大きくなり、
そのため電路情報を正確に検出できないという欠点があ
った。However, since the power supply circuits such as the trip device and the trip circuit are rectified by inputting the interphase voltage of the electric line, when a short-circuit current flows in the electric line,
There is a drawback in that the tripping device may not operate because the interphase voltage decreases and the voltage becomes unstable. In addition, there is a limit to the current value that can be detected because the current transformer is saturated when a large current flows, and there is an error in the output signal of the current transformer due to the residual magnetic flux density after a short-circuit current flows, which is a large error. Becomes
Therefore, there is a drawback that the electric circuit information cannot be accurately detected.
【０００４】また、回路遮断器等の電路の定格によっ
て、変流器の形状や巻線数あるいは２次側の負担抵抗を
変えなければならないため、多種類の製品を必要とし
た。この発明の目的は、飽和や残留磁束密度の影響によ
る出力電圧の誤差を小さくし、短絡時の電源の安定化を
図れるとともに、異なる電路の定格による対応を容易に
行える変流器を提供することである。Further, since the shape of the current transformer, the number of windings, or the burden resistance on the secondary side must be changed depending on the rating of the electric circuit such as a circuit breaker, many kinds of products are required. An object of the present invention is to provide a current transformer that can reduce the error of the output voltage due to the influence of saturation and residual magnetic flux density, stabilize the power supply in the case of a short circuit, and easily cope with the ratings of different electric paths. Is.
【０００５】[0005]
【課題を解決するための手段】この発明の変流器は、一
端に丸穴と他端に軸方向に長い長穴とを有し中央部にコ
イルを巻いて対向配置した一対のボビンと、一対のボビ
ンの長穴に対応する２個の穴を一片に設け他片を一方の
ボビンに挿入した第１のＬ型コアと、一対のボビンの丸
穴に対応する２個の穴を一片に設け他片を他方のボビン
に挿入した第２のＬ型コアと、第１と第２のＬ型コアの
ギャップ寸法を決める穴を両端に有する４枚のギャップ
寸法規制板とを備えている。そして、ギャップ寸法規制
板を第１，第２のＬ型コアを挟んで各ボビンに挿入し、
各ボビンの長穴，各ギャップ寸法規制板の穴および第１
のＬ型コアの各穴に第１および第２のピンを挿通し、各
ボビンの丸穴，各ギャップ寸法規制板の穴および第２の
Ｌ型コアの各穴に第３および第４のピンを挿通してい
る。A current transformer according to the present invention comprises a pair of bobbins each having a round hole at one end and an elongated hole elongated in the axial direction at the other end, and a coil wound around a central portion of the bobbin. A first L-shaped core with two holes corresponding to the long holes of a pair of bobbins provided in one piece and the other piece inserted into one bobbin, and two holes corresponding to the round holes of a pair of bobbins in one piece It has a second L-shaped core in which the other piece provided is inserted into the other bobbin, and four gap size regulating plates having holes at both ends for determining the gap size of the first and second L-shaped cores. Then, the gap size regulating plate is inserted into each bobbin with the first and second L-shaped cores interposed therebetween,
Oblong hole of each bobbin, hole of each gap size control plate and first
The first and second pins are inserted into the holes of the L-shaped core, and the third and fourth pins are inserted into the round holes of the bobbins, the holes of the gap size regulating plates, and the holes of the second L-shaped core. Is inserted.
【０００６】[0006]
【作用】この発明の構成によれば、ギャップ寸法規制板
を第１，第２のＬ型コアを挟んで各ボビンに挿入し、各
ボビンの長穴，各ギャップ寸法規制板の穴および第１の
Ｌ型コアの各穴に第１および第２のピンを挿通し、各ボ
ビンの丸穴，各ギャップ寸法規制板の穴および第２のＬ
型コアの各穴に第３および第４のピンを挿通しているた
め、ギャップ寸法規制板に設ける両端の穴の間隔の設定
により、正確なギャップ寸法が得られ、飽和や残留磁束
密度の影響による出力電圧の誤差を小さくし、短絡時の
電源を安定化できる。また、電路の定格が変わっても形
状や巻線仕様や回路定数を変えずに、ギャップ寸法を変
えることにより、すなわち間隔の異なる穴を設けたギャ
ップ寸法規制板を用いることにより容易に対応できる。According to the structure of the present invention, the gap size regulating plate is inserted into each bobbin with the first and second L-shaped cores sandwiched therebetween, and the elongated hole of each bobbin, the hole of each gap size regulating plate and the first and second holes are formed. The first and second pins are inserted into the respective holes of the L-shaped core, and the round holes of the bobbins, the holes of the gap size regulating plates, and the second L
Since the 3rd and 4th pins are inserted into each hole of the mold core, an accurate gap size can be obtained by setting the gap between the holes on both ends of the gap size regulation plate, and the influence of saturation and residual magnetic flux density. It is possible to reduce the error in the output voltage due to and stabilize the power supply during a short circuit. Further, even if the rating of the electric path is changed, it can be easily dealt with by changing the gap dimension without changing the shape, the winding specification or the circuit constant, that is, by using the gap dimension regulating plate provided with holes having different intervals.
【０００７】[0007]
【実施例】この発明の一実施例を図面に基づいて説明す
る。図１はこの発明の一実施例の変流器の外観図、図２
は同変流器の分解斜視図、図３は同変流器におけるＬ型
コアとギャップ寸法規制板の斜視図、図４は同変流器に
おけるボビンの斜視図である。図１ないし図４におい
て、１は穴１７，１８を設けた第１のＬ型コア、２は穴
１９，２０を設けた第２のＬ型コア、３は丸穴２１，３
３と長穴２３，３１を有するボビン、４はボビン３と同
様で丸穴２２，３４と長穴２４，３２を有するボビン、
５〜８は鉄板（ギャップ寸法規制板）、９〜１６は鉄板
５〜８の両端に設けた穴、２５，２６は第１，第２のピ
ン、２７，２８は第３，第４のピン、２９はコイル、３
５は隙間である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external view of a current transformer according to an embodiment of the present invention, and FIG.
Is an exploded perspective view of the current transformer, FIG. 3 is a perspective view of an L-shaped core and a gap size regulating plate in the current transformer, and FIG. 4 is a perspective view of a bobbin in the current transformer. 1 to 4, 1 is a first L-shaped core provided with holes 17 and 18, 2 is a second L-shaped core provided with holes 19 and 20, 3 is a round hole 21, 3
3 and a bobbin having elongated holes 23 and 31, 4 is a bobbin similar to the bobbin 3 and having round holes 22 and 34 and elongated holes 24 and 32,
5 to 8 are iron plates (gap size regulating plates), 9 to 16 are holes provided at both ends of the iron plates 5 to 8, 25 and 26 are first and second pins, and 27 and 28 are third and fourth pins. , 29 is a coil, 3
5 is a gap.
【０００８】この変流器は、図２に示すように、コイル
２９（図１）を巻いたボビン３，４を対向配置し、ボビ
ン３，４にＬ型コア１，２を挿入し、さらにＬ型コア
１，２を挟んで鉄板５〜８を挿入している。そして、ピ
ン２７，２８をボビンの丸穴２１，２２から鉄板の穴１
３，１５、コアの穴１９，２０、鉄板の穴１４，１６、
ボビンの丸穴３３，３４（図４）を挿通してかしめ等の
手段で固定している。また、ピン２５，２６をボビンの
長穴２３，２４から鉄板の穴９，１１、コアの穴１７，
１８、鉄板の穴１０，１２、ボビンの長穴３１，３２を
挿通してかしめ等の手段で固定している。In this current transformer, as shown in FIG. 2, bobbins 3 and 4 around which a coil 29 (FIG. 1) is wound are arranged to face each other, and L-shaped cores 1 and 2 are inserted into the bobbins 3 and 4, and Iron plates 5 to 8 are inserted with the L-shaped cores 1 and 2 sandwiched therebetween. Then, the pins 27 and 28 are moved from the round holes 21 and 22 of the bobbin to the hole 1 of the iron plate.
3, 15, core holes 19, 20, iron plate holes 14, 16,
The round holes 33 and 34 (FIG. 4) of the bobbin are inserted and fixed by means such as caulking. In addition, the pins 25 and 26 are inserted from the long holes 23 and 24 of the bobbin to the holes 9 and 11 of the iron plate, the holes 17 of the core,
18, the holes 10 and 12 of the iron plate and the elongated holes 31 and 32 of the bobbin are inserted and fixed by means such as caulking.
【０００９】図３に示すように、第１と第２のＬ型コア
１，２のギャップ寸法Ｃは、鉄板６の穴１０と穴１４の
間の寸法ＡからＬ型コア２の鉄板５，６に挟まれた片の
寸法Ｂを引くことにより正確に得ることができる。な
お、第１と第２のＬ型コア１，２は同一形状であり、鉄
板５〜８も同一形状である。したがって、鉄板５〜８に
設ける穴間の寸法Ａによりギャップ寸法Ｃを決定でき
る。なお、図４に示すように、ボビン３，４には、ギャ
ップ寸法Ｃを変えることによる第１のＬ型コア１のスラ
イドに対応させるために、隙間３５を設けている。As shown in FIG. 3, the gap dimension C between the first and second L-shaped cores 1 and 2 is from the dimension A between the holes 10 and 14 of the iron plate 6 to the iron plate 5 of the L-shaped core 2. It can be accurately obtained by drawing the dimension B of the piece sandwiched by 6. The first and second L-shaped cores 1 and 2 have the same shape, and the iron plates 5 to 8 also have the same shape. Therefore, the gap dimension C can be determined by the dimension A between the holes provided in the iron plates 5-8. As shown in FIG. 4, the bobbins 3 and 4 are provided with a gap 35 in order to accommodate sliding of the first L-shaped core 1 by changing the gap dimension C.
【００１０】図５にこの変流器における一次電流と２次
出力電圧の関係を示しておく。図５において、ａ，ｂ，
ｃはそれぞれギャップ寸法を変えて、ａは１．０ｍｍ、
ｂは１．５ｍｍ、ｃは２．０ｍｍとした場合であり、そ
の他の条件（巻線数，２次負担抵抗など）は同じであ
る。以上のようにこの実施例によれば、鉄板（ギャップ
寸法規制板）５〜８を第１，第２のＬ型コア１，２を挟
んで各ボビン３，４に挿入し、各ボビン３，４の長穴２
３，３１，２４，３２，各鉄板の穴９〜１２および第１
のＬ型コア１の各穴１７，１８に第１および第２のピン
２５，２６を挿通し、各ボビン３，４の丸穴２１，３
３，２２，３４，各鉄板の穴１３〜１６および第２のＬ
型コア２の各穴１９，２０に第３および第４のピン２
７，２８を挿通しているため、鉄板５〜８に設ける両端
の穴９〜１６の間隔の設定により、正確なギャップ寸法
が得られ、飽和や残留磁束密度の影響による出力電圧の
誤差を小さくし、短絡時の電源を安定化できる。また、
電路の定格が変わっても形状や巻線仕様や回路定数を変
えずに、ギャップ寸法を変えることにより、すなわち間
隔の異なる穴を設けた鉄板（ギャップ寸法規制板）を用
いることにより容易に対応できる。なお、ギャップ寸法
規制板は鉄板に限られるものではない。FIG. 5 shows the relationship between the primary current and the secondary output voltage in this current transformer. In FIG. 5, a, b,
c has different gap dimensions, a is 1.0 mm,
b is 1.5 mm and c is 2.0 mm, and other conditions (number of windings, secondary burden resistance, etc.) are the same. As described above, according to this embodiment, the iron plates (gap size regulating plates) 5 to 8 are inserted into the bobbins 3 and 4 with the first and second L-shaped cores 1 and 2 interposed therebetween, and the bobbins 3 and 4 are inserted. Long slot 2 of 4
3,31,24,32, holes 9 to 12 of each iron plate and the first
The first and second pins 25 and 26 are inserted into the holes 17 and 18 of the L-shaped core 1 of FIG.
3, 22, 34, holes 13 to 16 of each iron plate and the second L
The third and fourth pins 2 are provided in the holes 19 and 20 of the mold core 2 respectively.
Since 7 and 28 are inserted, an accurate gap size can be obtained by setting the intervals of the holes 9 to 16 at both ends provided in the iron plates 5 to 8, and the error of the output voltage due to the influence of saturation and residual magnetic flux density can be reduced. And the power supply can be stabilized at the time of short circuit. Also,
Even if the rating of the electric circuit changes, it can be easily handled by changing the gap size without changing the shape, winding specifications, or circuit constants, that is, by using an iron plate (gap size control plate) with holes with different intervals. . The gap size regulating plate is not limited to the iron plate.
【００１１】[0011]
【発明の効果】この発明の変流器は、ギャップ寸法規制
板を第１，第２のＬ型コアを挟んで各ボビンに挿入し、
各ボビンの長穴，各ギャップ寸法規制板の穴および第１
のＬ型コアの各穴に第１および第２のピンを挿通し、各
ボビンの丸穴，各ギャップ寸法規制板の穴および第２の
Ｌ型コアの各穴に第３および第４のピンを挿通している
ため、ギャップ寸法規制板に設ける両端の穴の間隔の設
定により、正確なギャップ寸法が得られ、飽和や残留磁
束密度の影響による出力電圧の誤差を小さくし、短絡時
の電源を安定化できる。また、電路の定格が変わっても
形状や巻線仕様や回路定数を変えずに、ギャップ寸法を
変えることにより、すなわち間隔の異なる穴を設けたギ
ャップ寸法規制板を用いることにより容易に対応でき
る。According to the current transformer of the present invention, the gap size regulating plate is inserted into each bobbin with the first and second L-shaped cores interposed therebetween.
Oblong hole of each bobbin, hole of each gap size control plate and first
The first and second pins are inserted into the holes of the L-shaped core, and the third and fourth pins are inserted into the round holes of the bobbins, the holes of the gap size regulating plates, and the holes of the second L-shaped core. Since the gap is inserted, an accurate gap size can be obtained by setting the distance between the holes on both ends of the gap size control plate, which reduces the error in the output voltage due to the effects of saturation and residual magnetic flux density, and reduces the power supply during a short circuit. Can be stabilized. Further, even if the rating of the electric path is changed, it can be easily dealt with by changing the gap dimension without changing the shape, the winding specification or the circuit constant, that is, by using the gap dimension regulating plate provided with holes having different intervals.
【図１】この発明の一実施例の変流器の外観図である。FIG. 1 is an external view of a current transformer according to an embodiment of the present invention.
【図２】同実施例の変流器の分解斜視図である。FIG. 2 is an exploded perspective view of the current transformer of the same embodiment.
【図３】同実施例の変流器におけるＬ型コアとギャップ
寸法規制板の斜視図である。FIG. 3 is a perspective view of an L-shaped core and a gap size regulating plate in the current transformer of the same embodiment.
【図４】同実施例の変流器におけるボビンの斜視図であ
る。FIG. 4 is a perspective view of a bobbin in the current transformer of the same embodiment.
【図５】同実施例の変流器における一次電流と２次出力
電圧の関係図である。FIG. 5 is a relationship diagram of a primary current and a secondary output voltage in the current transformer of the same example.
１ 第１のＬ型コア ２ 第２のＬ型コア ３，４ ボビン ５〜８ 鉄板（ギャップ寸法規制板） ９〜１６ 鉄板の穴 １７，１８ 第１のＬ型コアの穴 １９，２０ 第２のＬ型コアの穴 ２１，２２，３３，３４ ボビンの丸穴 ２３，２４，３１，３２ ボビンの長穴 ２５，２６ 第１，第２のピン ２７，２８ 第３，第４のピン ２９ コイル 1 1st L-shaped core 2 2nd L-shaped core 3,4 Bobbin 5-8 Iron plate (gap size control plate) 9-16 Hole of iron plate 17,18 Hole of 1st L-shaped core 19,20 2nd L-shaped core hole 21, 22, 33, 34 Bobbin round hole 23, 24, 31, 32 Bobbin oblong hole 25, 26 1st and 2nd pin 27, 28 3rd and 4th pin 29 Coil
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【手続補正書】[Procedure amendment]
【提出日】平成４年７月６日[Submission date] July 6, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００２[Name of item to be corrected] 0002
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００２】[0002]
【従来の技術】従来、回路遮断器の過電流を検出する手
段として、バイメタルや瞬時式電磁石を使用せずに、変
流器と引外し装置（釈放リレー）を使用するものがあ
る。これは、各相の変流器を回路遮断器に内蔵して、電
路の電流を電圧に変換しその信号を過電流検出回路に送
り、その出力信号が設定値レベルを超えると引外し装置
を駆動させて電路を遮断するようになっている。この場
合、回路遮断器の定格が変わったときには、設定値レベ
ルを変化させないように、変流器の形状を変えたり、巻
線数を変えたり、あるいは変流器の２次側の負担抵抗を
変えたりして対応していた。2. Description of the Related Art Conventionally, as means for detecting an overcurrent in a circuit breaker, there is one that uses a current transformer and a trip device (release relay) without using a bimetal or a momentary electromagnet. This is because the current breaker for each phase is built in the circuit breaker, the current in the circuit is converted to a voltage, and the signal is sent to the overcurrent detection circuit.When the output signal exceeds the set value level, the trip device is activated. It is designed to be driven to cut off the electric circuit. In this case, when the rating of the circuit breaker changes, the shape of the current transformer is changed, the number of windings is changed, or the burden resistance on the secondary side of the current transformer is changed so that the set value level is not changed. I responded by changing it.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００３[Name of item to be corrected] 0003
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００３】[0003]
【発明が解決しようとする課題】しかし、引外し装置お
よび引外し回路等の電源回路は、電路の相間電圧を入力
して整流しているため、電路に短絡電流が流れた場合、
相間電圧が低下して電圧が不安定になり引外し装置が動
作しない場合があるという欠点があった。また、大電流
が流れたときに変流器が飽和するため検出できる電流値
に限界があり、また短絡電流が流れた後には残留磁束密
度のために変流器の出力信号の誤差が大きくなり、その
ため電路情報を正確に検出できないという欠点があっ
た。However, since the power supply circuits such as the trip device and the trip circuit are rectified by inputting the interphase voltage of the electric line, when a short-circuit current flows in the electric line,
There is a drawback in that the tripping device may not operate because the interphase voltage decreases and the voltage becomes unstable. Further, there is a limit on the current value can be detected because the current transformer is saturated when a large current flows, also the error of the current transformer of the output signal is greatly due to the residual magnetic flux density after the short-circuit current flows Therefore, there is a drawback that the electric circuit information cannot be accurately detected.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００４】また、回路遮断器等の電路の定格によっ
て、変流器の形状や巻線数あるいは変流器の２次側の負
担抵抗を変えなければならないため、多種類の製品を必
要とした。この発明の目的は、飽和や残留磁束密度の影
響による出力電圧の誤差を小さくし、短絡時の電源の安
定化を図れるとともに、異なる回路遮断器の定格による
対応を容易に行える変流器を提供することである。In addition, since the shape of the current transformer, the number of windings, or the burden resistance on the secondary side of the current transformer must be changed depending on the rating of the electric circuit such as the circuit breaker, many types of products are required. .. An object of the present invention is to provide a current transformer which can reduce the error of the output voltage due to the influence of saturation and residual magnetic flux density, stabilize the power supply in the case of a short circuit, and easily cope with the ratings of different circuit breakers. It is to be.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００６】[0006]
【作用】この発明の構成によれば、ギャップ寸法規制板
を第１，第２のＬ型コアを挟んで各ボビンに挿入し、各
ボビンの長穴，各ギャップ寸法規制板の穴および第１の
Ｌ型コアの各穴に第１および第２のピンを挿通し、各ボ
ビンの丸穴，各ギャップ寸法規制板の穴および第２のＬ
型コアの各穴に第３および第４のピンを挿通しているた
め、ギャップ寸法規制板に設ける両端の穴の間隔の設定
により、正確なギャップ寸法が得られ、飽和や残留磁束
密度の影響による出力電圧の誤差を小さくし、短絡時の
電源を安定化できる。また、回路遮断器の定格が変わっ
ても形状や巻線仕様や回路定数を変えずに、ギャップ寸
法を変えることにより、すなわち間隔の異なる穴を設け
たギャップ寸法規制板を用いることにより容易に対応で
きる。According to the structure of the present invention, the gap size regulating plate is inserted into each bobbin with the first and second L-shaped cores sandwiched therebetween, and the elongated hole of each bobbin, the hole of each gap size regulating plate and the first and second holes are formed. The first and second pins are inserted into the respective holes of the L-shaped core, and the round holes of the bobbins, the holes of the gap size regulating plates, and the second L
Since the 3rd and 4th pins are inserted into each hole of the mold core, an accurate gap size can be obtained by setting the gap between the holes on both ends of the gap size regulation plate, and the influence of saturation and residual magnetic flux density. It is possible to reduce the error in the output voltage due to and stabilize the power supply during a short circuit. In addition, even if the rating of the circuit breaker changes, it can be easily handled by changing the gap size without changing the shape, winding specifications, or circuit constants, that is, by using the gap size control plate with holes with different intervals. it can.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】図５にこの変流器における１次電流と２次
出力電圧の関係を示しておく。図５において、ａ，ｂ，
ｃはそれぞれギャップ寸法を変えて、ａは１．０ｍｍ、
ｂは１．５ｍｍ、ｃは２．０ｍｍとした場合であり、そ
の他の条件（巻線数，２次負担抵抗など）は同じであ
る。以上のようにこの実施例によれば、鉄板（ギャップ
寸法規制板）５〜８を第１，第２のＬ型コア１，２を挟
んで各ボビン３，４に挿入し、各ボビン３，４の長穴２
３，３１，２４，３２，各鉄板の穴９〜１２および第１
のＬ型コア１の各穴１７，１８に第１および第２のピン
２５，２６を挿通し、各ボビン３，４の丸穴２１，３
３，２２，３４，各鉄板の穴１３〜１６および第２のＬ
型コア２の各穴１９，２０に第３および第４のピン２
７，２８を挿通しているため、鉄板５〜８に設ける両端
の穴９〜１６の間隔の設定により、正確なギャップ寸法
が得られ、飽和や残留磁束密度の影響による出力電圧の
誤差を小さくし、短絡時の電源を安定化できる。また、
回路遮断器の定格が変わっても形状や巻線仕様や回路定
数を変えずに、ギャップ寸法を変えることにより、すな
わち間隔の異なる穴を設けた鉄板（ギャップ寸法規制
板）を用いることにより容易に対応できる。なお、ギャ
ップ寸法規制板は鉄板に限られるものではない。[0010] should show the relationship between the primary current and secondary output voltage in the current transformer in FIG. In FIG. 5, a, b,
c has different gap dimensions, a is 1.0 mm,
b is 1.5 mm and c is 2.0 mm, and other conditions (number of windings, secondary burden resistance, etc.) are the same. As described above, according to this embodiment, the iron plates (gap size regulating plates) 5 to 8 are inserted into the bobbins 3 and 4 with the first and second L-shaped cores 1 and 2 interposed therebetween, and the bobbins 3 and 4 are inserted. Long slot 2 of 4
3,31,24,32, holes 9 to 12 of each iron plate and the first
The first and second pins 25 and 26 are inserted into the holes 17 and 18 of the L-shaped core 1 of FIG.
3, 22, 34, holes 13 to 16 of each iron plate and the second L
The third and fourth pins 2 are provided in the holes 19 and 20 of the mold core 2 respectively.
Since 7 and 28 are inserted, an accurate gap size can be obtained by setting the intervals of the holes 9 to 16 at both ends provided in the iron plates 5 to 8, and the error of the output voltage due to the influence of saturation and residual magnetic flux density can be reduced. And the power supply can be stabilized at the time of short circuit. Also,
Even if the rating of the circuit breaker changes, it is easy to change the gap dimensions without changing the shape, winding specifications, or circuit constants, that is, by using the iron plate (gap size regulation plate) with holes with different intervals. Can handle. The gap size regulating plate is not limited to the iron plate.
【手続補正６】[Procedure Amendment 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１１[Correction target item name] 0011
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１１】[0011]
【発明の効果】この発明の変流器は、ギャップ寸法規制
板を第１，第２のＬ型コアを挟んで各ボビンに挿入し、
各ボビンの長穴，各ギャップ寸法規制板の穴および第１
のＬ型コアの各穴に第１および第２のピンを挿通し、各
ボビンの丸穴，各ギャップ寸法規制板の穴および第２の
Ｌ型コアの各穴に第３および第４のピンを挿通している
ため、ギャップ寸法規制板に設ける両端の穴の間隔の設
定により、正確なギャップ寸法が得られ、飽和や残留磁
束密度の影響による出力電圧の誤差を小さくし、短絡時
の電源を安定化できる。また、回路遮断器の定格が変わ
っても形状や巻線仕様や回路定数を変えずに、ギャップ
寸法を変えることにより、すなわち間隔の異なる穴を設
けたギャップ寸法規制板を用いることにより容易に対応
できる。According to the current transformer of the present invention, the gap size regulating plate is inserted into each bobbin with the first and second L-shaped cores interposed therebetween.
Oblong hole of each bobbin, hole of each gap size control plate and first
The first and second pins are inserted into the holes of the L-shaped core, and the third and fourth pins are inserted into the round holes of the bobbins, the holes of the gap size regulating plates, and the holes of the second L-shaped core. Since the gap is inserted, an accurate gap size can be obtained by setting the distance between the holes on both ends of the gap size control plate, which reduces the error in the output voltage due to the effects of saturation and residual magnetic flux density, and reduces the power supply during a short circuit. Can be stabilized. In addition, even if the rating of the circuit breaker changes, it can be easily handled by changing the gap size without changing the shape, winding specifications, or circuit constants, that is, by using the gap size control plate with holes with different intervals. it can.
Claims (1)
を有し中央部にコイルを巻いて対向配置した一対のボビ
ンと、 前記一対のボビンの長穴に対応する２個の穴を一片に設
け他片を一方のボビンに挿入した第１のＬ型コアと、 前記一対のボビンの丸穴に対応する２個の穴を一片に設
け他片を他方のボビンに挿入した第２のＬ型コアと、 前記第１と第２のＬ型コアのギャップ寸法を決める穴を
両端に有する４枚のギャップ寸法規制板とを備え、 前記ギャップ寸法規制板を前記第１，第２のＬ型コアを
挟んで前記各ボビンに挿入し、前記各ボビンの長穴，各
ギャップ寸法規制板の穴および第１のＬ型コアの各穴に
第１および第２のピンを挿通し、前記各ボビンの丸穴，
各ギャップ寸法規制板の穴および第２のＬ型コアの各穴
に第３および第４のピンを挿通した変流器。1. A pair of bobbins each having a round hole at one end and an elongated hole elongated in the axial direction at the other end and having a coil wound around a central portion and facing each other, and two bobbins corresponding to the elongated holes of the pair of bobbins. No. 1 hole provided in one piece and the other piece inserted into one bobbin, and two holes corresponding to the round holes of the pair of bobbins provided in one piece and the other piece inserted into the other bobbin A second L-shaped core; and four gap size regulating plates having holes for determining the gap dimensions of the first and second L-shaped cores at both ends, wherein the gap size regulating plates are the first and the first. 2 L-shaped cores are inserted and inserted into each bobbin, and the first and second pins are inserted into the elongated holes of each bobbin, the holes of each gap size regulating plate and each hole of the first L-shaped core. , The round hole of each bobbin,
A current transformer in which the third and fourth pins are inserted into the holes of each gap size regulating plate and the holes of the second L-shaped core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4101372A JPH05299274A (en) | 1992-04-21 | 1992-04-21 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4101372A JPH05299274A (en) | 1992-04-21 | 1992-04-21 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05299274A true JPH05299274A (en) | 1993-11-12 |
Family
ID=14298989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4101372A Pending JPH05299274A (en) | 1992-04-21 | 1992-04-21 | Current transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05299274A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6269531B1 (en) * | 1998-08-10 | 2001-08-07 | Electro Componentes Mexicana S.A. De C.V. | Method of making high-current coils |
| JP2010056422A (en) * | 2008-08-29 | 2010-03-11 | Midori Anzen Co Ltd | Current transformer |
| JPWO2013005286A1 (en) * | 2011-07-04 | 2015-02-23 | 三菱電機株式会社 | Temperature monitoring apparatus and temperature monitoring method |
-
1992
- 1992-04-21 JP JP4101372A patent/JPH05299274A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6269531B1 (en) * | 1998-08-10 | 2001-08-07 | Electro Componentes Mexicana S.A. De C.V. | Method of making high-current coils |
| JP2010056422A (en) * | 2008-08-29 | 2010-03-11 | Midori Anzen Co Ltd | Current transformer |
| JPWO2013005286A1 (en) * | 2011-07-04 | 2015-02-23 | 三菱電機株式会社 | Temperature monitoring apparatus and temperature monitoring method |
| JP5674935B2 (en) * | 2011-07-04 | 2015-02-25 | 三菱電機株式会社 | Temperature monitoring apparatus and temperature monitoring method |
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