DC-CT (Direct Current Transducer)

The necessity to measure currents in the industry has been, together with sensing voltage , the most important tools for proceedings control’s. However, current sensing is more complicated than voltage sensing, specially with DC currents. There are many solutions for current measurement, such as conventional current transformers, shunt resistors, hall effect sensors or rogowsky coils, which have been used for many years, but all of them have the same problem: a bad response operating at high currents and high frequencies. On the other hand, not all of them share measurements of AC and DC currents simultaneously. Another problem is the high temperature variation of some sensors, for example the hall effect sensors. INNEXIV’s DC CT sensors can measure, DC currents up to 200A DC .
Key Features:

  • Very low output noise and offset drift
  • Negligible insertion losses
  • High immunity to interference
  • Overload Capability
  • Excellent linearity
Rated Current 0-200A
Output Current 200 mA at 200 A rated primary current
Current direction Arrow direction displayed on the unit
Current transformation ratio 1000:1
Accuracy DC ±(0.05% of rdg + 30 µA)
Guarantee accuracy period 12-month
Effect of conductor position ±0.01% of reading
Temperature coefficient 0.01%/°C or less in the ranges from 10 to 18°C and 28 to 50°C
Load resistance 0 to 30 ohm
Operating température range 10 to 50°C
Operating humidity range 20 to 80% RH (no condensation)
Storage temperature range -20 to 60°C
Storage humidity range 20 to 80% RH (no condensation)
Dimensions Approx. 93 (W) x 77 (H) x 38 (D) mm
Primary current hole diameter Ø 26 mm
Weight Approx. 0.3 kg
Power voltage ±(15 V ±5%)
 Maximum rated voltage  11 VA
 Power consumption (at each power voltage)  Approx. (80 mA + output current)
 Recommended fixing screw and tightening torque M4 stainless steel screw x4, 2.8 Nm
M5 stainless steel screw x2, 3.7 Nm
 Connections  D-sub 9 connector
 Mechanical (Outer) Dimensions  107 x 91 x 50 mm
 Linear Error ( Nominal Value)  < 5 ppm
 Basic Insulation (Between Primary and Measurement Current)  3500 V AC 50Hz 1′