JPS6145842B2 - - Google Patents
Info
- Publication number
- JPS6145842B2 JPS6145842B2 JP53062908A JP6290878A JPS6145842B2 JP S6145842 B2 JPS6145842 B2 JP S6145842B2 JP 53062908 A JP53062908 A JP 53062908A JP 6290878 A JP6290878 A JP 6290878A JP S6145842 B2 JPS6145842 B2 JP S6145842B2
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- earth leakage
- leakage
- detection coil
- leakage detection
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 239000010955 niobium Substances 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 claims 1
- 229910000889 permalloy Inorganic materials 0.000 description 9
- 239000011162 core material Substances 0.000 description 8
- 229910001004 magnetic alloy Inorganic materials 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000009610 hypersensitivity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000002821 niobium Chemical class 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229910000815 supermalloy Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Soft Magnetic Materials (AREA)
Description
本発明は漏電しや断器における漏電検出コイル
に用いる鉄心に関する。
漏電しや断器は、平衡状態にある回路が漏電に
より不平状態になつた時に、その平衡のずれを漏
電成分として検出コイルが検出し、回路のしや断
動作を行なうものである。この漏洩しや断器にお
ける漏電検出コイルは鉄心に巻線したものである
が、平衡のずれによる漏電成分は微少なものであ
り、僅かな漏電でも感知するためには、鉄心の材
料として透磁率の高いパーマロイを使用する必要
がある。
従来、この鉄心に用いられていたパーマロイ
は、スーパーマロイと呼ばれるニツケル79％―モ
リブデン５％系パーマロイ、またはモリブデン―
銅系（例えばニツケル77％―銅５％―モリブデン
４％）パーマロイである。しかし、近時漏電しや
断器では高感度化且つ安定化の傾向にあり、より
高感度で安定した漏電検出動作が行なえる漏電検
出コイル用鉄心が要求されている。
本発明はこのような要求に充分応え得る漏電検
出コイル用鉄心を提供するものである。
すなわち、本発明の漏電検出コイル用鉄心はニ
オブを含有した高透磁率パーマロイを材料として
形成したものである。このニオブ系パーマロイで
ある磁性合金は、高透磁率で残留磁速密が低く保
磁力の小さいという優れた磁気特性を有してお
り、この磁性合金を鉄心材料とすることにより、
漏電しや断器において高感度で安定した漏電検出
動作を行なえる漏電検出コイル用鉄心を得ること
ができる。
すなわち、前記磁性合金が有する高透磁率とい
う特性は漏電検出コイル用鉄心の高過感度化に寄
与するものであり、且つ磁性合金が有する低残留
磁速密度および低保磁力とい特性は鉄心の安定化
に寄与するものである。
漏電検出コイル用鉄心は環状のもので、検出コ
イルを巻回して、平衡のずれに応じて鉄心が検出
コイルに電流を誘起させ、この検出コイルに誘起
した電流を漏電成分として検出するものである
が、本発明の鉄心によれば微少なずれ（電流）で
あつても確実に検出コイルに漏電成分として電流
を誘起させて取出すことができ、高感度で安定し
た漏電検出動作を行なえる。
本発明の鉄心を形成する磁性合金はニオブ系パ
ーマロイであつて、重量比でニツケル70〜85％
と、ニオブ１〜15％と、モリブデン、タングステ
ン、クロム、タンタル、シリコン、マンガンを単
独または複合で0.1〜10％と、残部実質的に鉄と
からなる合金である。
ニツケル等の上記成分は透磁率をコイル用鉄心
として好ましい値にするために上記範囲が適当で
ある。
また、アルミニウム、チタン、ジルコニウムの
単独または複合で0.01〜３％の添加は、鉄心の磁
気特性を得るために必要な雰囲気、例えば露点―
40℃の水素中でも酸化し表面に酸化膜をつけるの
で、鉄心形成時に板材を重ね合わせた時に層間絶
縁が不要となるという効果が得られて好ましい。
〔実施例〕
下記の表に示すように所定成分を有する試料１
〜10を実施に際して採用した。そして、これら各
試料１〜10の成分で溶解して得たインゴツトを通
常の方法により熱間および冷間加工を施して0.5
mm厚の板を形成し、この板から外径2Cmm×内経
12mmのリングを打ち抜き、これを温度1150℃で加
熱、徐冷した後５枚を重ねて１つの鉄心を製作し
た。この鉄心に１次側コイル巻数１回、２次側コ
イル巻数750回をもつて１次側および２次側コイ
ルを各々巻回し、１次側コイルに試験電流を流し
て２次側コイルの２次出力および２次出力の漏電
特性を計測した、２次出力は１次側コイルに50
Hz、20mAの電流を流し、２次側の負荷抵抗を5K
Ωとした時の２次電圧を測り、また渦漏電特性は
１次側コイルに１度5Aの直流電流を流した後に
同じ方法で２次電圧を測つたものである。この測
定結果を下記の表に示す。なお、試料１〜８は本
発明例、試料９，10は従来例である。
The present invention relates to an iron core used in a leakage detection coil for leakage or disconnection. A current leakage or disconnection occurs when a balanced circuit becomes unbalanced due to current leakage, and a detection coil detects the imbalance as a current leakage component and performs a circuit disconnection operation. The leakage detection coil for this leakage and disconnection is wound around an iron core, but the leakage component due to imbalance is minute, and in order to detect even the slightest leakage, it is necessary to use a material with magnetic permeability as the material of the iron core. It is necessary to use permalloy with a high Conventionally, the permalloy used for this iron core is 79% nickel-5% molybdenum permalloy called supermalloy, or molybdenum-based permalloy.
It is a copper-based (for example, 77% nickel - 5% copper - 4% molybdenum) permalloy. However, in recent years, there has been a trend toward higher sensitivity and stabilization in earth leakage and disconnection, and there is a demand for an iron core for earth leakage detection coils that can perform earth leakage detection operations with higher sensitivity and stability. The present invention provides an iron core for an earth leakage detection coil that can fully meet such demands. That is, the earth leakage detection coil iron core of the present invention is made of high permeability permalloy containing niobium. This niobium-based permalloy magnetic alloy has excellent magnetic properties such as high magnetic permeability, low residual magnetic density, and small coercive force. By using this magnetic alloy as the iron core material,
It is possible to obtain an iron core for an earth leakage detection coil that can perform a highly sensitive and stable earth leakage detection operation in the event of an earth leakage or disconnection. In other words, the high magnetic permeability characteristic of the magnetic alloy contributes to high hypersensitivity of the leakage detection coil core, and the low residual magnetic velocity density and low coercive force characteristics of the magnetic alloy contribute to the stability of the core. This contributes to the The iron core for earth leakage detection coil is annular and is wound around the detection coil so that the iron core induces a current in the detection coil according to the imbalance, and the current induced in this detection coil is detected as a leakage component. However, according to the iron core of the present invention, even if there is a slight deviation (current), current can be reliably induced and extracted as a leakage component in the detection coil, and a highly sensitive and stable leakage detection operation can be performed. The magnetic alloy forming the iron core of the present invention is a niobium-based permalloy, with a weight ratio of 70 to 85% nickel.
It is an alloy consisting of 1 to 15% of niobium, 0.1 to 10% of molybdenum, tungsten, chromium, tantalum, silicon, and manganese alone or in combination, and the remainder substantially iron. The above-mentioned range of the above-mentioned components such as nickel is suitable in order to make the magnetic permeability a preferable value for a coil core. Additionally, the addition of 0.01 to 3% of aluminum, titanium, and zirconium singly or in combination can improve the atmosphere required to obtain the magnetic properties of the core, such as dew point
Since it oxidizes even in hydrogen at 40°C and forms an oxide film on the surface, it is preferable because it eliminates the need for interlayer insulation when the plates are stacked on top of each other when forming the iron core. [Example] Sample 1 having specified components as shown in the table below
~10 were adopted in the implementation. Then, the ingots obtained by melting the components of each sample 1 to 10 were subjected to hot and cold working in the usual manner to obtain 0.5 ingots.
Form a plate with a thickness of mm, and from this plate an outer diameter of 2 cm x inner diameter.
A 12 mm ring was punched out, heated at a temperature of 1,150°C, slowly cooled, and then stacked to form one iron core. The primary and secondary coils are each wound around this iron core with 1 turn of the primary coil and 750 turns of the secondary coil, and a test current is passed through the primary coil to The leakage characteristics of the secondary output and the secondary output were measured, and the secondary output was
Hz, 20mA current is applied, and the load resistance on the secondary side is 5K.
The secondary voltage was measured when set to Ω, and the eddy current leakage characteristics were measured using the same method after passing a 5A DC current through the primary coil. The measurement results are shown in the table below. Note that Samples 1 to 8 are examples of the present invention, and Samples 9 and 10 are conventional examples.
【表】
なお、E2は２次出力（２次電圧mV）を示し、
E′2は過漏電特性（mV）を表わしている。
この表によれば本発明による鉄心は、従来の鉄
心と比較して２次出力が数mV程向上しており、
また過漏電特性も良好であることが明白であり、
高感度で安定した漏電検出動作を行なう漏電検出
コイル用鉄心として最適な特性を有している。
また、この実施例では板材をリング状に打ち抜
いて重ね合せて鉄心を構成したが、帯状板を巻し
て構成した鉄心を用いることもできる。
本発明の漏電検出コイル用鉄心は以上説明した
ように、ニオブ系パーマロイで形成することによ
り、高感度で安定した漏電検出動作を行なえ、漏
電しや断器の性能向上に投立たせることができ
る。[Table] In addition, E 2 indicates the secondary output (secondary voltage mV),
E′ 2 represents the overcurrent leakage characteristic (mV). According to this table, the core according to the present invention has improved secondary output by several mV compared to the conventional core.
It is also clear that the leakage characteristics are good.
It has the optimum characteristics as an iron core for earth leakage detection coils that performs highly sensitive and stable earth leakage detection operations. Further, in this embodiment, the core was constructed by punching out plate materials into ring shapes and stacking them on top of each other, but it is also possible to use an iron core constructed by winding band-shaped plates. As explained above, the iron core for earth leakage detection coil of the present invention is made of niobium-based permalloy, so that it can perform highly sensitive and stable earth leakage detection operation, and can be used to improve the performance of earth leakage and disconnection. .
Claims (1)
％と、モリブデン、タングステン、クロム、タン
タル、シリコン、マンガンを単独または複合で、
0.1％〜10％と、残部実質的に鉄とからなる合金
で形成することにより過漏電特性が良好であるこ
とを特徴とする漏電検出コイル用鉄心。 ２ 鉄の一部をアルミニウム、チタンおよびジル
コニウムの１種または２種以上、合計で0.01％〜
３％の範囲で置換したことを特徴とする特許請求
の範囲第１項に記載のコイル用鉄心。[Claims] 1. 70 to 85% nickel and 1 to 15% niobium by weight
%, molybdenum, tungsten, chromium, tantalum, silicon, manganese alone or in combination,
An iron core for an earth leakage detection coil, characterized in that it has good over-earth leakage characteristics by being made of an alloy consisting of 0.1% to 10% and the remainder substantially iron. 2. Part of the iron is one or more of aluminum, titanium, and zirconium, totaling 0.01% or more.
The coil core according to claim 1, characterized in that the substitution range is 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6290878A JPS54154100A (en) | 1978-05-26 | 1978-05-26 | Iron core for leakage detecting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6290878A JPS54154100A (en) | 1978-05-26 | 1978-05-26 | Iron core for leakage detecting coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54154100A JPS54154100A (en) | 1979-12-04 |
| JPS6145842B2 true JPS6145842B2 (en) | 1986-10-09 |
Family
ID=13213814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6290878A Granted JPS54154100A (en) | 1978-05-26 | 1978-05-26 | Iron core for leakage detecting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54154100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0394148U (en) * | 1990-01-16 | 1991-09-25 |
-
1978
- 1978-05-26 JP JP6290878A patent/JPS54154100A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0394148U (en) * | 1990-01-16 | 1991-09-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54154100A (en) | 1979-12-04 |
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