Current transformer

Current transformer

Our active standard current transformers based on the current comparator principle. With an indicator winding the magnetic flux in the iron core is measured and fed back into the iron core to make the magnetic flux zero. This way we can grant a 10 ppm uncertainty for ratio and phase and this over a very broad working range.     The application of our standard current transformers include range extension for capacitance and tand measurements (cable drums or power capacitors), as reference for current transformer measurements as well as calibration and metrology purposes.    

CT – 2FRO

CT – 2FRO

Reference current transformer for range extension of capacitance and power factor measurement. transformation ratios 1 : 10 und 1 : 100 working range 1 … 200 % of nominal current uncertainty of transformation ratio ± 0.001 % uncertainty of phase ± 0.05 Min.

CT – 3FRO

CT – 3FRO

Reference current transformer for range extension of capacitance and power factor measurement. nominal currents primary 10 A, 220A and 660 A transformation ratios 1 : 10, 1 : 100 and 1 : 250 working range 1 … 100 % of nominal current uncertainty of ratio ± 0.001 % uncertainty of phase ± 0.05 Min. Extra Information Datasheet CT-3FRO Front – Hi-Res (961kB)  

CT – N1K0

CT – N1K0

Reference current transformer with nominal primary currents (IN): 1’000, 500, 250, 125, 100, 50, 25, 12.5, 10, 5 A nominal secondary current 5 A rated burden 5 VA working range 1 … 200 % of nominal current uncertainty of ratio ± 0.001 % uncertainty of phase ± 0.05 Min. overload protection with indication Extra Information Datasheet CT-N1K0 Front – Hi-Res (874kB)  

CT – N2K0

CT – N2K0

Reference current transformer with nominal primary currents (IN): 2’000, 1’000, 500, 250, 125, 100, 50, 25, 12.5, 10, 5 A nominal secondary current 5 A rated burden 5 VA working range 1 … 200 % of nominal current uncertainty of ratio ± 0.001 % uncertainty of phase ± 0.05 Min. overload protection with indication Extra Information Datasheet CT-N2K0  

CT – N5K0

CT – N5K0

Reference current transformer with nominal primary currents (IN): 5’000, 2’500, 1’250, 1’000, 500, 250, 125, 100, 50, 25, 12.5, 10, 5 A nominal secondary current 5 A rated burden 5 VA working range 1 … 200 % of nominal current uncertainty of ratio ± 0.001 % uncertainty of phase ± 0.05 Min. overload protection with indication Extra Information Datasheet CT-N5K0