JPS5943511A - Current transformer - Google Patents

Current transformer

Info

Publication number
JPS5943511A
JPS5943511A JP57152651A JP15265182A JPS5943511A JP S5943511 A JPS5943511 A JP S5943511A JP 57152651 A JP57152651 A JP 57152651A JP 15265182 A JP15265182 A JP 15265182A JP S5943511 A JPS5943511 A JP S5943511A
Authority
JP
Japan
Prior art keywords
core
winding
shield
current
secondary winding
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.)
Granted
Application number
JP57152651A
Other languages
Japanese (ja)
Other versions
JPH0556009B2 (en
Inventor
Fumio Iwasaki
文雄 岩崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midori Anzen Co Ltd
Original Assignee
Midori Anzen Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Midori Anzen Co Ltd filed Critical Midori Anzen Co Ltd
Priority to JP57152651A priority Critical patent/JPS5943511A/en
Publication of JPS5943511A publication Critical patent/JPS5943511A/en
Publication of JPH0556009B2 publication Critical patent/JPH0556009B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20Instruments transformers
    • H01F38/22Instruments transformers for single phase ac
    • H01F38/28Current transformers
    • H01F38/30Constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

PURPOSE:To check a residual current from becoming large by means of the primary inrush current and eliminate the malfunctioning of a relay, by providing wiring to the shield cladding the wiring wound around a core. CONSTITUTION:A buffer material 7 provided around the periphery of a permalloy core 6 may be substituted by a spong or other materials, or can be made void. A core protecting case 8 provided around the periphery of a buffer material 7 is formed phenol resin or the like, so that strain resulting from winding will not be directly applied to the core 6. A cotton tape 10 provided around the periphery of the secondary winding 9 provided around the core protecting case 8 is impregnated with varnish, paraffin, or the like. A winding 12 wound around an external shield 11 provided on the outside of the secondary winding 9, a side shield 13 provided on both side parts of the secondary winding 9, and a wiring 14 wound around the side shield 13. These windings 12 and 14 are short- circuited. If three current transformers having the aforementioned configuration are placed on each phase of three-phase circuits 1 in the inside of a switch 2, and then, the flux density of each part of a current transformer core is examined, it is found that the core flux is not saturated.

Description

【発明の詳細な説明】 本発明は、変流器に関するものである。[Detailed description of the invention] The present invention relates to a current transformer.

3佃、1の変流器C’l’ ; 第1図示のようにY接
続の三相(申1路(1)の各相に設置し、 3CTとし
て零相電流ち・検出する方法は従来より行われている。
The current transformer C'l' of 3 CT and 1 is installed in each phase of the Y-connected three-phase circuit (1 path (1) as shown in the first figure), and the method of detecting the zero-sequence current as 3CT is conventional. This is being done more than ever.

3CTにおいて残留電流のメカニズムは、各々のC’l
I’のHh fa電流のベクトル和であることが知られ
ている。1次掛、流が増加すると励6μ市流も比例して
大きくなり、励磁電流は磁束密度が100+、I G 
(ガウス)以上になると第3.廓5.第9fiA!]波
の増加が著しくなる。励磁電流の3つのベクトル和は記
:う高想4波×3倍が多くなるので残留坐゛流は大きく
なる。その為定格71;流が大きい11S1は、そのl
l’、’iの7iil奉においてup東密度が小さくな
るようにS′↓心の大きさ2巻線1巻糾1の線径な考慮
して設u1されている。
The mechanism of residual current in 3CT is that each C'l
It is known that I' is the vector sum of Hh fa currents. As the primary current increases, the excitation 6μ current increases proportionally, and the excitation current has a magnetic flux density of 100+, I G
(Gauss) or higher, it becomes 3rd. 5. 9th FIA! ] The increase in waves becomes significant. The sum of the three vectors of excitation current is as follows: As the number of waves increases by a factor of 3, the residual current increases. Therefore, the rating is 71; 11S1, which has a large flow, is
U1 is set taking into account the wire diameter of S'↓2 windings, 1 winding, and 1 wire so that the up east density is small in the 7iil cases of l' and 'i.

しかし、このように設計された3CT O?JL 3図
示のように気中Bト1閉器等、鉄板製#:11+i+1
閉器(2)(以下[」閉器(2)という)内に設置′C
ると、1次突入市浦時に、残留電流が大きくなり、高性
能に設計された3 C’1’においてもほとんどlr′
i1−の1次】菌渡市流で組子”器(3)が誤7わf′
Fするという問題点がある例えば、定格1次電流20O
Aのもので、 i h: Atか(電流が6(IOA稈
度流れる楊島、その時の3CTの残留小流が200nt
k以下ならばよいものとし7て、第2図示のように30
 ’L”シi;r+閉器(2)のjl(板ケースの外1
111において開閉器(2)と1列に設#/!′L、 
、 1次過渥市流6 (1(l Aおよび10(IOA
をl′かしたとさ1組、小器(3)が誤動作しない2種
類の3CTy製作才ることは容易である。
However, the 3CT O designed in this way? JL 3 As shown in the diagram, air B 1 closure, etc., made of iron plate #: 11 + i + 1
Installed in the enclosure (2) (hereinafter referred to as the enclosure (2))'C
Then, during the primary rush Ichiura, the residual current becomes large, and even in 3C'1', which is designed for high performance, almost lr'
i1-1] Kumiko device (3) is incorrectly 7f' in Funado Ichi style
For example, if the rated primary current is 20O,
In case of A, i h: At?
As long as it is less than k, 7, as shown in the second figure, 30
'L'si; r + jl of the closure (2) (outside the board case 1
At 111, set in one row with switch (2) #/! 'L,
, 1st order Ichiryu 6 (1(l A and 10(IOA)
It is easy to manufacture two types of 3CTy in which the small device (3) does not malfunction.

しかし、上記24’ll類の3CTを1則閉器(2)内
に設置すると、交隋呻1路的にfjrニーであり1次渦
良小流も同じ値になZ)がどちらも40 (I A n
’度で2〆に川、力のiに f::、’イit’iが2
(Hlm、A fyこえてしまい、fff 電i513
1が誤動作イる。
However, when the above 24'll type 3CT is installed in the one-law closure (2), the alternating flow is fjr knee in terms of one path, and the primary vortex flow is also the same value, and Z) is 40 for both. (IA n
'It's 2〆 in the river, force i in f::, 'It' i is 2
(Hlm, A fy exceeded, fff electric i513
1 malfunctions.

’f’ 2 ”l’Xl rF O> ヨうニ、3CT
f 14N閉器(2)の外側に設jトシたり、9合につ
いて、記4図1示のように各CT o)うち2つのC’
L’ −A 、 Bの8右、切曲における磁束密度すな
わち外部磁界の4鞠と目線による(層重の和?さぐりコ
イル(414−(jj・つてル^lべると次のようにな
るC i’ −A 検出個所  磁束密1す(0”)   波形1、   
          1500           
    正づ土岐2     11(10l1 3     11(H)        ”4、   
  6 (l Ol/ 5     600       、tt6     
140(l        tt7      J、 
4 (1(1l/8     1400       
 、。
'f' 2 "l'Xl rF O> Yoni, 3CT
f 14N Closer (2) is installed on the outside, and for the 9th position, as shown in Figure 1, each CT o) Two of the C'
8 right of L' - A, B, the magnetic flux density at the bend, that is, the external magnetic field, and the line of sight (the sum of the layer weights? Searching coil (414- C i' -A Detection point Magnetic flux density 1 (0") Waveform 1,
1500
Correct Toki 2 11 (10l1 3 11 (H) ”4,
6 (l Ol/ 5 600, tt6
140(l tt7 J,
4 (1 (1l/8 1400
,.

検とII、 イアM )iIT      (霧(・ 
束IHt鴫  (U  )       Yl’:  
II・1        1400         
iL’3.(、波2            (i(1
0311(]Olツ ノ1570 5         1100 6          2!+(10l/7     
    3700             l/8 
         3 (] 00         
     l’なお、 3CTの結線力す、けY接続、
♀゛1心にはスーパーマ[1イ2使用し、 4(10t
1〜500 (1辺りでtξ(シJオ(1がじ瓦じよに
始まる。目線のみによる磁束密度は60(1()であZ
)。
Kento II, Ia M) iIT (fog (・
Bunch IHt 紫 (U) Yl':
II・1 1400
iL'3. (, wave 2 (i(1
0311(]Ol horn 1570 5 1100 6 2!+(10l/7
3700 l/8
3 (] 00
l'In addition, the connection force of 3CT is Y connection,
♀゛For 1 heart, use superma [1 and 2, and 4 (10t
1 to 500 (around 1 tξ
).

ゐ1,3図1示のように3C’l”ヤ1411閉器(2
) 0)内に[・に設置したtt、I、 tzについて
も、 tyy 5図へのように谷CTのコアのうち2つ
のコアA、l−朱の8(kl +9jにおけZ)磁束密
度2m4図の陽合と同イ、1にして1ljulべろと次
のようになる。
1,3 As shown in Figure 1, 3C'l''
) 0) Also for tt, I, tz installed at [·, tyy As shown in Figure 5, two cores A of the valley CT, 8 (Z at kl + 9j) of the cores of l-vermilion (Z at kl +9j) magnetic flux density Same as the positive conjunction of the 2m4 figure, if you change it to 1 and turn it into 1 ljul, it becomes as follows.

C1’−A 検出他)所  磁束密度(G)  波形1      
         220(l           
   正 づり: 波2          390 
          l13     4600   
   第3調波が多い4             2
4[1(、l            正づ土岐5  
       .1100 6          2(lflOl/7     
   2000          l/8     
     1.7([1ttT−H 検出個所  F&′束密度(())  波形1    
       57(l         止り土岐2
        2900          l/3
      51.0(1甲3調波が多い4     
            34()0        
       、’E’J子 波F+        
   570           ”6      
    A 300           l/7’ 
     7200      外、3調妓が多いB 
             4.600       
     止り玄σν(J、1−82つのq!−験(シ
11から、 3CTは開1jイ1器(3)の内部に設置
した時の方がコアは外部磁界の4鞠4・多く受けること
がわかる。即ち1部分的にliの慴4ノtがfIj!和
し部分的に4イ1れ磁束に高思1波が冬く含j′れるよ
うにt(す、そのため励61′l室流も高調波が含十オ
1−残留賢1流が多くなることにt「る。
C1'-A Detection, etc.) Location Magnetic flux density (G) Waveform 1
220 (l
Correct spelling: wave 2 390
l13 4600
There are many 3rd harmonics 4 2
4[1(,l correct Toki 5
.. 1100 6 2 (lflOl/7
2000 l/8
1.7 ([1ttT-H Detection location F&' flux density (()) Waveform 1
57 (l Tomari Toki 2
2900 l/3
51.0 (1A, 3, many harmonics, 4
34()0
, 'E'J child wave F+
570 ”6
A 300 l/7'
7200 Outside, there are many 3-prostitutes B
4.600
Torigen σν (J, 1-82 q!-Experiments (from Shi 11) When 3CT is installed inside the open 1j I1 vessel (3), the core receives 4 4 more external magnetic fields. In other words, 1 partially li's 4 notation is fIj!, and partially 4i1, so that the magnetic flux contains 1 high wave j', so that the excitation 61'l The room flow also contains harmonics and the residual energy flow increases.

そこで、外部11仔界の影響シ少く才る対山として、第
6旧来のようにCT−13の巻線の外(11;にシール
ド15) 75/l1Ili L、で、シー、心の各部
の磁未密j長をtW1定才ると、どχのようになる。
Therefore, as Tsuyama, who is less influenced by the external 11 child world, as in the 6th traditional, outside the winding of CT-13 (shield 15) When the magnetic density j length is fixed by tW1, it becomes as follows.

C’l”−1+ を金相個所  彫束密1n((j) 1     130(1 34600 5170f1 76;う0() 即ち、シールドは殆ど効果がないことがわかる。これは
、シールドが目線による電流で飽和」するためであZ)
C'l''-1+ is the gold phase part.C'l"-1+ (Z)
.

本発明は、1次突入電流により残留型2d↑が大きくな
るのを抑制し、継電器の誤動f’E f>−なくシ、零
相変流器と[7て広く使用できる:qCTを提供しよう
とするものである。
The present invention suppresses the residual type 2d↑ from increasing due to primary inrush current, eliminates relay malfunction f'E f>-, and provides a zero-phase current transformer [7] that can be widely used: qCT. This is what I am trying to do.

以十図面肌7図にもとすいて本発明の第一実施例?説明
すると、(6)はパーマロイ (スーパーマロイな含む
)製の鉄心、(7)は釦心(1)の周囲に設けた緩11
相で、スポンジそのrtttの材′日を用いてもよく、
空隙にしてもよい。(8)は緩匝相(7)の周v11に
設けた3゛l心(V護ケースで、フェノール樹脂などで
成形してあり、歪力により特性が下るパーマロイで製作
されている鉄心((3)に巻線による歪力が面接加わら
ないようにするものである。(9)は鉄心保護ケース(
8)の周囲に設けた2次巻線、 (110)は2次巻線
の周囲に設けた粕1テープで、フェノ。パラフィンなど
ヤ含浸させである。旧)け2/″)(巻線(9)の外[
111gIS分に施した外側シールド、q力は外側シー
ルド旧)に巻キつけた巻線、 tl:(l 、 第13
)は2次巻線(9)の左右両0111部分ニソレぞh 
!n+ll、 タfllll 面シー ルト、 (Ll
i 、 fli ii fi川用+n iyシールド1
31 、 j131にそ第1ぞれ)′÷・六つけた巻線
1で、これらの巻線(17)および旧1 、041はシ
ョートさせである。
The first embodiment of the present invention is shown in Figure 7 below. To explain, (6) is an iron core made of permalloy (including supermalloy), and (7) is a loose 11 provided around the button center (1).
In phase, the material of the sponge may be used.
It may be a void. (8) is a 3"l core (V-protection case) provided on the circumference v11 of the loose-molten phase (7), and is made of permalloy, which is molded with phenol resin etc. and whose characteristics deteriorate due to strain force (( 3) prevents the strain force caused by the windings from being applied to the surface.(9) is the core protection case (
8) The secondary winding installed around the secondary winding, (110) is the Kasu 1 tape installed around the secondary winding, pheno. It is impregnated with paraffin or the like. old) ke2/'') (outside winding (9) [
Outer shield applied to 111g IS, q force is the outer shield (old) winding, tl: (l, 13th
) are the left and right 0111 parts of the secondary winding (9).
! n+ll, taflllll surface seal, (Ll
i, fli ii fi river +n iy shield 1
31 and j131, respectively)'÷6 are attached to winding 1, and these windings (17) and old 1, 041 are short-circuited.

11ま[1のl7Ili成より成イ]障・f重器(ビT
O):う((7・、・在・)18図1示のように開閉器
(2)の内冷もにおいて巳r1.l [i:+l星3t
llCn各相に設置[7,変流器CT−Bl′7)il
、心の各部σ)6<ζ東密世な2ど欠巻線の七からさぐ
りコイル(4)ヤ(il・つて調べてみると、〆’iH
のようになる。。
Until 11 [17Ili formation] Disability/heavy equipment (ViT
O):U((7・,・exist・)18 As shown in Figure 1, the internal cooling of the switch (2) is r1.l [i:+l star 3t
llCn installed in each phase [7, current transformer CT-Bl'7)il
, each part of the heart σ)6
become that way. .

C’l”−B 検14佃所  磁束密度(())   波形1    
 、  ]、]、OOはぼ止り玄θぐ2     57
0 3     570        /14     
 57 (1/1 5     680        ”6     1
85(l        tt7250011 8         1900           
   il即ち、鉄心の磁束は飽和しないことがわかる
C'l''-B Detection 14 Station Magnetic flux density (()) Waveform 1
, ], ], OO is bodori Gen θgu2 57
0 3 570 /14
57 (1/1 5 680 ”6 1
85 (l tt7250011 8 1900
il, that is, the magnetic flux of the iron core is not saturated.

次に1図面9図にもとすいて本発明のη)、二実施例を
悦明才ると、(6)はパーマロイ (スーパーマロイを
含む)勲の鉄心、(7)は鉄心(6)の周1.IHに設
けた緩i1R,i pAまたは空l徐、(8)は緩挿1
または空隙(7)の周す((に設けた吃1心保護ケース
で、鉄心(6)よりも飽和餠束密L13のj′;jlい
誹性(“A料9例えばケイ素Wi板、紳鉄で成形され外
部磁界のしゃへいを兼ねたケースである。(15)はケ
ース18)に設けたギャップ、(9)はケース(8)の
周L?Hに設けた2次巻線、 tlO+は2次巻線(シ
))ノり囲に設けた綿テープで、フェノ。パラフィンな
どt合浸させである。
Next, referring to Figure 1 and Figure 9, η) and two embodiments of the present invention are shown. (6) is a permalloy (including supermalloy) iron core, and (7) is an iron core (6). Around 1. Slow insertion 1R, i pA or air IH provided in IH, (8) is slow insertion 1
Or, with a core protective case provided around the air gap (7), the saturated core density L13 is lower than that of the iron core (6). The case is made of iron and serves as a shield from external magnetic fields. (15) is the gap provided in case 18), (9) is the secondary winding provided at the circumference L-H of case (8), and tlO+ is The cotton tape placed around the secondary winding (2) is soaked with phenol, paraffin, etc.

1、 +i1.’の(マシ戊より成る変流器C11の:
う個?4)710図承山上うに13)1閉器(2)の内
部において三相[11路(1)の名什1に設y・し、変
流器CT −Bの各部のに束密度を・さぐ1〕、コイル
(4)?使って調べ2通常の変流器CTのii、74東
密IL)と比べると次のようになる。
1, +i1. '(Current transformer C11 consisting of Mashiho:
How many? 4) Fig. 710 (Fig. 710) 13) Inside the 1-closer (2), the three-phase circuit (11) is installed in the main part 1 of the circuit (1), and the flux density is set at each part of the current transformer CT-B. 1], coil (4)? Comparing it with 2 normal current transformer CT ii, 74 Tomitsu IL), it is as follows.

T−B 1    750      630 2        1200            
3200;人    21f+0      6:(O
F) (飽和)4    1500     32(]
(1+j5調岐太5          9 (1(1
6:う()6       25(1(]      
    500(1733007600 828005fi(10 即ち、外部磁界の影leケ舐少きせる効果のあることが
わかる。
T-B 1 750 630 2 1200
3200; person 21f+0 6:(O
F) (Saturation) 4 1500 32 (]
(1+j5 Chokita 5 9 (1(1
6:U()6 25(1()
500 (1733007600 828005fi (10) In other words, it can be seen that there is an effect of reducing the influence of the external magnetic field.

十−iic’実か1〕例による3CTとσI来の3CT
の残留時jli:、 67開閉器(2)の内ハ[Vにi
目1j−する庸;疹と、設置l−ないtj;、 iy、
にわけて比較すると9表12表2のとおりになり1両名
に3相1θζ市7fF 6(IOAで、Jθ、′耐流ケ
tJ、1 秒0へ 、5秒OFF 、0.t 秒ON 
 、5 秒(丹パドと繰返し試験を?−jつだ時の0.
1秒ON0′l11.′lの残り′イア(1ンフ11の
(411を・フォトケラフでヲ■り才と、4九11図ン
iミのようになる。
10-iic' real or 1] 3CT according to example and 3CT from σI
When jli remains:, 67 switch (2) inner
Eye 1j- to do; eruption and installation l-not tj;, iy,
When compared separately, the result is as shown in Table 9, Table 12, and Table 2. 1 and 3 phase 1θζ city 7fF 6 (IOA, Jθ, 'flow resistance ketJ, 1 second to 0, 5 seconds OFF, 0.t second ON
, 5 seconds (Tampa and repeat test?-j 0.
1 second ON0'l11. The rest of 'l' (1 nf 11's (411) can be used as a photokeraf, and it will look like 4911).

水弁11J1をオ、叙−ヒθ)ように41111□成し
たから 1 /′に+へ市〃rによりへ留γb′流が大
さくなるの’s: m、’ ili’l L 。
Since the water valve 11J1 is constructed as 41111□, the flow γb' becomes larger as the water valve 11J1 is constructed as follows: m, 'ili'l L.

【図面の簡単な説明】[Brief explanation of the drawing]

p+−1wロー3 !’4 =J、 、J):S(ゴに
 Lる零拝1 ’h; Mi )Ir汁: 1ift路
図、か、2図はi、i’l’来の3CTる・謄1閉器の
りを側に設置したjiil路1゛21 、第13図は1
が来の3CT汐・j)1・)閉器θ)内部ζ二設面(−
2だIL11路図、第11’、′<1は7# 2図にお
ける7−cq゛のF’−>yl+の附東’+’:’:出
−)」(メ方r” fl’z f l’>l 、 ?j
・、5kl ハ;’j”−31*l ニオt−t ル各
CT 03 器片10)(69束t’11tl)求めj
テ4・21クオ図、 ?;L(i図は;y41ン(1に
おける各CTにシtv ト□y Mt’ L l= ”
: 今〕% :l()i・Q束密1リノ求め方6− t
iミーj IYI 、 71”、 71’に日オ水元1
1ハリ)r’!’−−−実1i11i例に係る斐流2く
い1析i+ii 1文1.肌81輝は第7図における各
C′1′のトEelXのf1υ東密+C−a)求め方シ
イモーを涼1,19図は本梵Ill +71 i7、:
T、 ’A−jiili ell l: f、t Z>
 変711f ”?Il O)!lJj 1lTI t
Yl 、 ’11(l IA’1、J lff49 J
’XI tm、 tc;’++ 7.)各CTa5各t
’+l+ 0)(、p束1.Y潤嬰:の求めh′肴・示
′劇[匍、第1J陀:け本発明σ43CTのフオトグ・
7)Iと守東の30’l’のフォトグラフ■の比重゛を
示才図である。 (6)・・、ル1、心、(8)・・・鉄心保1;ψケー
ス、 r9r −2次へ線。 (印・・外+1lllシールド (17i・巻線、 I
:(1、(13)・(Illll−ルド、 +141 
、141・・巻紙”14. 、 +1へ1・・ギャップ
。 表  1 3CTの夕し留特性(定常詩) Ul(1閉に内に設置にしない腸r〉 lン欠3柑       200A、      40
0A      600A水発明  5m、A  l 
0rrtA  l 5mA従来品  8.5mA  l
 7nLA  21mA表 2 [1:l閉器内に設置した1;g合 ■へ3′+lI   2(H)A   4(IOA、 
  lOAオy 介 1す4         12m
A       25+nA       35mA位
四晶  l 2mA  25.5777A  60mA
30()A    10(IOA 、   15tH)
A    2000A20mA     27m、A 
    60mA    100〃zA30mA   
 700/nA    14(1(1mA     2
7A14t)OAで急11113 / 80CIA    I (100A    1.5(H
IA    2+、10(IA60y+lA    1
(N)mA     2.8A      42A24
0mA    I 、8A      55A    
  56A↑ 800A−C急峻 第1/図 0./Sec
p+-1w low 3! '4 = J, , J): S (Goni L zero worship 1 'h; Mi) Ir juice: 1ift route map, or 2 figure is i, i'l' 3CTru 1 closed box Jiil path with glue on the side 1゛21, Figure 13 is 1
The next 3CT Shio・j) 1・) Closer θ) Internal ζ 2 installation surface (−
2nd IL11 road map, 11', '<1 is 7# 7-cq゛ in figure 2 F'->yl+ east '+':':out-)' (Meka r"fl'z f l'>l , ?j
・, 5kl c;'j''-31*l Nio t-t le each CT 03 piece 10) (69 bundles t'11tl) find j
Te 4.21 Kuo diagram, ? ;L(Figure i is ;y41n(Sitv to each CT in 1)
: Now]% :l()i・Q bundle density 1 Reno calculation method 6-t
i me j IYI, 71", 71', Japan-Ocean Mizumoto 1
1 Hari) r'! '---Hiryu 2 Kui 1 Analysis i+ii 1 Sentence 1. Skin 81 Hikaru is each C'1' in Figure 7, Eel
T, 'A-jiili ell l: f, t Z>
Change 711f ”?Il O)!lJj 1lTI t
Yl, '11(l IA'1, J lff49 J
'XI tm, tc;'++ 7. ) each CTa5 each t
'+l+ 0) (, p bundle 1.
7) This is an illustration of the relative gravity of the 30'l' photo of I and Morito. (6)..., le 1, core, (8)...iron core 1; ψ case, r9r - line to second degree. (mark...outer +1llll shield (17i winding, I
:(1, (13)・(Illll-old, +141
, 141... Rolling paper" 14. , 1 to +1... Gap. Table 1 3CT's evening retention characteristics (steady poem) Ul (intestinal r that is not placed inside 1 closing) 1 missing 3 Kan 200A, 40
0A 600A water invention 5m, A l
0rrtA l 5mA conventional product 8.5mA l
7nLA 21mA Table 2 [1:1 installed in the closed enclosure;
lOA oy 1s 4 12m
A 25+nA 35mA tetracrystal l 2mA 25.5777A 60mA
30()A 10(IOA, 15tH)
A 2000A20mA 27m,A
60mA 100〃zA30mA
700/nA 14(1(1mA 2
7A14t) OA suddenly 11113 / 80CIA I (100A 1.5 (H
IA 2+, 10 (IA60y+lA 1
(N)mA 2.8A 42A24
0mA I, 8A 55A
56A↑ 800A-C Steep No. 1/Fig. 0. /Sec

Claims (2)

【特許請求の範囲】[Claims] (1)  鉄心に巻き付けられた巻線vlうシールドに
巻線6・施して[成る変?M器
(1) The winding wrapped around the iron core and the winding 6 are applied to the shield. M device
(2)鉄心?、鉄心より飽和磁気が高い磁性飼料で彼い
、その附性伺料の上より巻線ケ施して成る変流器。
(2) Iron core? A current transformer made of a magnetic material with higher saturation magnetism than an iron core, and windings are applied above the additional material.
JP57152651A 1982-09-03 1982-09-03 Current transformer Granted JPS5943511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57152651A JPS5943511A (en) 1982-09-03 1982-09-03 Current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57152651A JPS5943511A (en) 1982-09-03 1982-09-03 Current transformer

Publications (2)

Publication Number Publication Date
JPS5943511A true JPS5943511A (en) 1984-03-10
JPH0556009B2 JPH0556009B2 (en) 1993-08-18

Family

ID=15545077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57152651A Granted JPS5943511A (en) 1982-09-03 1982-09-03 Current transformer

Country Status (1)

Country Link
JP (1) JPS5943511A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01123325U (en) * 1988-02-15 1989-08-22
JPH0380511A (en) * 1989-08-24 1991-04-05 Midori Anzen Kk Winding method for zero-phase current transformer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101647948B1 (en) * 2014-05-30 2016-08-12 광운대학교 산학협력단 A position tracking system, a position tracking apparatus and a position tracking method for a user device using visible light communication

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532012A (en) * 1978-08-25 1980-03-06 Toshiba Corp Sheet film containing case of x-ray photographing apparatus
JPS5635290A (en) * 1979-08-30 1981-04-07 Sharp Kk Electronic taxi meter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532012A (en) * 1978-08-25 1980-03-06 Toshiba Corp Sheet film containing case of x-ray photographing apparatus
JPS5635290A (en) * 1979-08-30 1981-04-07 Sharp Kk Electronic taxi meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01123325U (en) * 1988-02-15 1989-08-22
JPH0380511A (en) * 1989-08-24 1991-04-05 Midori Anzen Kk Winding method for zero-phase current transformer
JPH0658857B2 (en) * 1989-08-24 1994-08-03 ミドリ安全工業株式会社 Winding method of zero-phase current transformer

Also Published As

Publication number Publication date
JPH0556009B2 (en) 1993-08-18

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