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Technical Data acc. to VDE 0414 T44-1 & IEC/EN 600044-1

Rated primary current I1N Window Type CTs 40 A – 6000 A
Primary Wounded CTs 1 A – 200 A
Tube Type CTs 50 A – 600 A
Summation CTs up to 10 Circuits
Rated secondary current I2N 1 A & 5 A
Rated frequency 50 – 60 Hz
on demand special types 162/3 – 400 Hz
Highest voltage for equipment Um (r.m.s) 720 V
on demand special types up to 1200
Rated power–frequency withstand voltage (r.m.s) 3 kV
on demand special types up to 6kV
Instrument security factor (FS) FS 5
Rated continuous thermal current 1,2 * I1N
Current rating 120 %
Rated short-time thermal current Ith = 60 * I1N max. 50 kA
Rated dynamic current Idyn = 2,5 * Ith max. 120 kA
Permissible ambient temperature – 40 °C – + 40 °C
Class of insulation in accordance with IEC 60085 E
B and F on demand
Degree of protection DIN/EN 60529/VDE 0470 T1 IP 20
Recommended tightening torque secondary terminals 1,5 bis 2 Nm