Electrical variables How Split-Core Type Transformers Work

Electrical variables How Split-Core Type Transformers Work
Electrical variables
How Split-Core Type Transformers Work
Current transformers are used to acquire
high alternating currents without contact
and without interrupting the circuit.
In principle, they consist of 2 separate
transformator windings (B1 = primary
winding with N1 windings, B2 =
secondarywindingwithN2windings)on
one common iron core (closed magnetic
11.02
circuit).
IfanalternatingcurrentI1flowsthrough
the winding B1, a current I2 is induced
inthewindingB2,whichdependsonthe
windingratioN1/N2.Incomparisonwith
stationary-installed panel transformers,
split-core type transformers must be able
toembraceaconductorwithinamagnetic
circuitthatissplitopen.
In practice, the primary winding B1
consistsofonlyonewindingthatcarriesthe
currenttobemeasured.Thetransformation
ratio of a current transformer is:
I1xN1=I2xN2
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