Current transformer

Split core CTs have a removable section, so that they can be installed without interrupting the circuit.A split core current transformer for coupling monitoring apparatus to a current carrying conductor includes a two-piece annular core structure formed by first and second arcuate core assemblies having windings, connectable to the monitoring apparatus, wound on laminated core sections, the laminated core sections each including a plurality of flat lamination elements arranged in a stacked configuration with alternate elements having generally circular end portions which project beyond the main body portion of the arcuate core section at each end thereof defining generally circular gaps....
Technical Details of split core transformersPrimary current: 100A-5000A
Secondary current: 5A, 1A  Standard approval: IEC44-1, BS7626  Maximum voltage: 0.72/3kV  Frequency: 50/60Hz  Rated load: 1VA-30VA  Class: 0.5, 1.0, 3.0
Short-time thermal current: Ith=100??In  Rated security coefficient: FS

Split core current transformers have interleaved joint and hinge structure.