Toroidal tranformers for medium voltage

We develops, manufactures and sells a range of toroidal transformers

Our goal is

“to distinguish ourselves generate
solutions and meet the expectations of an increasingly demanding market”

  • The series with modularity in height fully provides innovative and effective solutions.
  • Designed with the aim to offer a product that meets the most various requests of appropriate size and weight.
  • Born to be free from the rigid constraints of the conventional molded transformers.

GENERALITY

RATED BURDEN OF COPPER WIRES BETWEEN INSTRUMENT AND CT

Cable section
mm2

Secondary 5A

Secondary 1A

Power (two poles) - Distance

1m

2m 4m 6m 8m 10m 10m 20m 40m 60m 80m 100m
1             0,36 0,71 1,43 2,14 2,85 3,57
1,5 0,58 1,15 2,31 3,46 4,62 5,77 0,23 0,46 0,92 1,39 1,85 2,31
2,5 0,36 0,71 1,43 2,14 2,86 3,57 0,14 0,29 0,57 0,86 1,14 1,43
4 0,22 0,45 0,89 1,34 1,79 2,24 0,09 0,18 0,36 0,54 0,71 0,89
6 0,15 0,3 0,6 0,89 1,19 1,49 0,06 0,12 0,24 0,36 0,48 0,6
10 0,09 0,18 0,36 0,54 0,71 0,89 0,04 0,07 0,14 0,21 0,29 0,36

ACCURACY CLASS

Accuracy class ± Percentage current error at percentage
of rated current shown below
 ± Phase displacement at percentage of rated current
shown below

MINUTES
5 20 100 120 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 45 30 30
1 3 1,5 1 1 180 90 60 60
  1 5 20 100 120 1 5 20 100 120
0,2S 0,75 0,35 0,2 0,2 0,2 30 15 10 10 10
0,5S 1,5 0,75 0,5 0,5 0,5 90 45 30 30 30
Accuracy class ± Percentage current error at percentage
of rated current shown below
50 120
3 3 3
5 5 5

PROTECTIVE CURRENT TRANSFORMERS

Accuracy class Current error at rated primary current %
  MINUTES
5P ± 1 ± 60
10P ± 3 -
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