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These are air cooled, tap insulated for direct use on bus bars. Ring type CT’s can also be supplied with mounting clamps. |
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Ratios available: |
40/5a to 5000/5a |
Accuracy: |
Class 0.2 to class 5 depending upon the burden and ratio |
Burden: |
2.5va to 30va |
Note: |
We can also manufacture rectangle type ct’s |
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Dimensions: |
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A |
B |
C |
RATIO |
VA. |
CL. |
Against Specific
Enquiry |
30 |
Against Specific Enquiry |
50/5,60/5,75/5 |
5 |
5 |
30 |
100/5, 50/5, 75/5 |
5 |
1 |
30 |
200/5 |
10 |
1 |
45 |
300/5, 400/5 |
10 |
1 |
55 |
500/5, 600/5 |
15 |
1 |
80 |
800/5, 1000/5 |
15 |
1 |
90 |
1200/5 |
15 |
1 |
105 |
1600/5,2000/5 |
15 |
1 |
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TYPE 02 Primary resin cast measuring ct’s |
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These CT’s are Resin Cast type having round central hole. Can be used in dusty and corrosive atmospheres. |
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The CT’s are supplied with complete bracket for fixing to boards and with cap for sealing secondary terminals. |
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Ratios available: |
100/5A to 2000/5A |
Accuracy: |
Class 1.0 |
Burden: |
5va for Ratios 100/5a to 300/5a 15va for Ratios 400/5 to 2000/5a |
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Dimensions: |
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RATIO |
A |
B |
C |
D |
E |
100/5 to 200/5 |
80 |
30 |
35 |
120 |
100 |
300/5 to 600/5 |
102 |
52 |
43 |
146 |
100 |
800/5 to 2000/5 |
150 |
105 |
55 |
222 |
160 |
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TYPE 03 Wound Primary Resin Cast Measuring Ct’s Type 03 |
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The primary winding is wound over the secondary winding of the CT and forms an integral part of the CT’s. These CT’s are used to obtain better accuracies for ratios where primary current is less than 100A Can be used in oily, dusty or corrosive atmospheres. These CT’s are supplied complete with mounting clamps, and cap for sealing secondary terminal. |
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Ratios available: |
10/5A to 400/5A |
Accuracy: |
Class 1& 0.5 |
Burden: |
5VA 10VA or 15VA |
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TYPE 04 Portable Precision Grade Ct’s |
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These CT’s are housed in wooden case with bakelite insulated panel with appropriate terminals for primary and secondary. Arrangement for shorting the secondary terminals is also provided. The boxes are provided with carrying handles and rubber grommets. A central hole is provided (in some models) to extend the primary rating of the CT’s |
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Ratios available: |
10/5A to 400/5A |
Accuracy: |
Class 1& 0.5 |
Burden: |
5VA 10VA or 15VA |
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Dimensions: |
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TYPE |
PRIMARY |
SECONDARY |
BURDEN |
ACCURACY |
EIC-04/1 |
600,300,200,100,50,254,10A |
5A |
5VA |
0.5 |
EIC-04/2 |
1200,600,400,300,200,150,
100,75,50,30,20,10A |
5A |
15VA |
0.2 |
EIC-04/3 |
1500,750,500,300,250,
100,50,30,10A |
5A |
15VA |
0.2 |
EIC-04/4 |
100,50,25,10,2.5,1,0.5A |
5A |
15VA |
0.2 |
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TYPE |
A |
B |
C |
D |
EIC-04/1 |
110 |
225 |
310 |
70 |
EIC-04/2
EIC-04/3
EIC-04/4 |
150 |
295 |
265 |
70 |
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TYPE 05 Wound Primary Tape Insulated Measuring Ct’s |
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The primary winding is wound over the secondary winding of the CT and forms an integral part of the CT. These CT’s are used to obtain better accuracies for ratios where the primary current is less than 100A.
These CT’s are supplied with mounting clamps |
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Ratios available: |
10/5 to 100/5A |
Accuracy: |
5VA 10VA or 15VA |
Burden: |
Class 1 & 0.5% |
Note: |
We can also manufacture custome made current transformers to meet customers individual Requirements |
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LIMITS OF ERROR FOR ACCURACY CLASSES 0.1 to 5.0
(CLUSES 3.2.1 AND 4.1 and 3.2.2). ISS 2705 |
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Dimensions: |
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Accuracy
Class |
Percentage Current(Ratio) Error At percentage of Rated Current |
Phase Displacement in Minutes At
Percentage of Rated Current |
|
5 |
20 |
50 |
100 |
120 |
5 |
20 |
100 |
120 |
0.1 |
0.4 |
0.2 |
|
0.1 |
0.1 |
15 |
8 |
5 |
5 |
0.2 |
0.75 |
0.35 |
|
0.2 |
0.2 |
30 |
15 |
10 |
10 |
0.5 |
1.5 |
0.75 |
|
0.5 |
0.5 |
90 |
25 |
30 |
30 |
1.0 |
3.0 |
1.5 |
|
1.0 |
1.0 |
180 |
90 |
60 |
60 |
3 |
|
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3 |
|
3 |
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5 |
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5 |
|
5 |
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Note: All Dimensions in mm. |
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