CT-600/CT-1000 User’s Manual
19
2.6
Full-Scale Current
Rated full-scale primary current can be easily changed by carrying out multiple
turns on the primary conductor hole.
The full-scale current can then be scaled by a factor of
N
, with
N
= number of
turns of the primary conductor around the hole. As an example (see figure
),
a primary full-scale current of 600 A can be easily scaled by a factor 2 (applying two
primary turns), and so the obtained full-scale will be 300 A or by a factor 3 (applying
three turns) and so the obtained full-scale will be 200 A.
Figure 11:
primary full-scale current scaled by a factor 2 (2 primary turns - left) and
scaled by 3 (3 primary turns - right)
Do not apply rated nominal full-scale primary current (for example 600A
for CT-600) when carrying out multiple turns on primary conductor hole.
