Current Transformer
Current Transformer
1. Description
It is outdoor, single phase and oil immersed hair-pin type current transformer, which is used for metering and relay protection of 35kV, 50 or 60Hz system.
2.Specifications
Rated voltage |
35kV |
Highest voltage for equipment |
40.5kV |
Rated frequency |
50 or60Hz |
Rated transformation ratio |
5-2000/5 or 1A |
Number of secondary windings |
1-4 |
Accuracy of measuring winding |
0.2, 0.2S, 0.5, 0.5S |
Accuracy of protection winding |
5P or 10P |
Rated secondary output |
20-50V A |
ALF Accuracy limit factors |
15, 20. 25, 30 |
FS Instrument security factor |
<5 or 10 |
External insulation creepage distance (mm) |
W1/810mm W2/1020mm W3/1260mm |
Power frequency withstand voltage on primary windings |
95kV rms |
Rated lightning impulse withstand voltage |
185kVpeak |
Secondary winding inter—turn withstand voltage |
4.5kV peak |
Mechanical strength (three direction) |
1250N |
3.Factory External Picture
4.Supply range
Rated primary current |
Rated short-time thermal current |
Rated dynamic current |
A |
kA |
kA kA |
5 |
0.5 |
1 .28 |
10 |
1 .0 |
2.56 |
15 |
1.5 |
3.83 |
20 |
2.0 |
5.1 |
30 |
3.0 |
7.65 |
40 |
4.0 |
10.2 |
50 |
5.0 |
12.75 |
75 |
7.5 |
19.13 |
100 |
10 |
25.5 |
150 |
15 |
38.3 |
200 |
20 |
51 |
300 |
30 |
76.5 |
400 |
40 |
102 |
500 |
40 |
102 |
600 |
40 |
102 |
750 |
40 |
102 |
800 |
40 |
102 |
1000 |
40 |
102 |
1500 |
40 |
102 |
2000 |
40 |
102 |
5.Our advantage
Quality Assurance
--From the very beginning, MEC ensures quality in every step to achieve the best quality.
Experience Sharing
--With more than 30 years’ experience in power industry, MEC brings you an optimized solution.
Global Service
--Wherever you are, MEC global network will support and provide you with value.
Quick Response
--In response to your needs without delay, MEC knows the value of your time.
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