Dewesoft DC-CT® current transducers provide the advantages of a zero-flux current transducer but with lower power consumption and a more compact design. With a broad measurement range, high bandwidth, excellent linearity, high accuracy, and minimal temperature drift, the DC-CT® stands out as one of the top current sensors available in the market today.
 
Overview
DC-CT® current sensing technology is ideal for precise current measurements across a broad spectrum of applications. The DC-CT® current sensors offer great benefits to existing current transducers on the market:
 
wide measurement range
high bandwidth
outstanding linearity
exceptional accuracy
minimal temperature drift
low power consumption.
 
This reduced power consumption also allows for a more compact design, resulting in a smaller sensor that can be more easily installed in tight spaces.
 
DC-CT® current measurement technology overview
DC-CT® technology represents a Platiše Flux Sensor (PFS) which is used in a closed-loop configuration. It offers all the benefits of a zero-flux current transducer but with lower power consumption and in a smaller form factor.
 
The DC-CT transducer operates like an AC current transformer, with primary and secondary windings linked by a shared high permeability core. Similar to other closed-loop methods, our technology consistently gauges the remaining magnetic flux in the core, arising from the variance between the primary and secondary currents. The identified variance guides the feedback control system, which modifies the current in the compensation winding to attain an ideal zero-flux equilibrium in the core.
 
Available models of DC-CT® current sensors
Currently, there is only one model available in the DC-CT current sensor family - DC-CT-1000I-S22DA.
 
DC-CT-1000I-S22DA
The first product from the DC-CT family is DC-CT-1000I-S22DA. This transducer model can measure DC up to 1000 A and AC up to 707 Arms. High bandwidth (-3 dB @ 500 kHz) enables accurate measurements in the most demanding applications such as electric motor and inverter testing. 
 
The sensor offers high linearity (<100 ppm), temperature stability (3 ppm/K), and low noise (4 ppm RMS @ 100 kHz) resulting in a high accuracy level of 0.02%.
DC-CT-1000I-S22DA current transducer delivers up to 1000 amperes of continuous measurement range in one of the smallest form factors on the market. The inner diameter is 22 mm. The compact form factor is enabled by lower power consumption.
 
Small form factor, perfect for placements in tight spots
The DC-CT-1000I-S22DA current transducer stands out by offering an impressive continuous measurement range of up to 1000 amperes, making it a reliable and versatile choice for various applications.
 
What sets this transducer apart is not only its high performance but also its compact design, which ranks it among the smallest form factors available in the market. Its inner diameter measures a mere 22 mm, contributing to its sleek and space-efficient profile.
 
The compact form factor is made possible by the transducer's efficient power consumption, ensuring optimal functionality while minimizing its overall size. This combination of advanced measurement capabilities, small form factor, and energy efficiency makes the DC-CT-1000I-S22DA an exceptional solution for precise and unobtrusive current measurements in diverse settings.
 
Low power consumption and simple powering with SIRIUSi-MCTS2 power supply
The DC-CT current transducers are characterized by their low power consumption and efficiency in energy usage. With a single SIRIUSi-PWR-MCTS2 power supply unit we can effortlessly power up to four DC-CT sensors without any limitations. This not only underscores the transducers' economic power requirements but also highlights the seamless integration capabilities facilitated by the power supply unit.
 
The signals from these DC-CT sensors are channeled through the SIRIUSi-MCTS2 slice into any low-voltage signal conditioning unit such as SIRIUS LV or SIRIUS STG.
DC CT sensors provide the flexibility of either flat or vertical panel mounting. With just four M4 screws, these sensors can be easily mounted either in a vertical or horizontal orientation, allowing for versatile installation options to suit specific requirements.
 
Made for various applications
DC-CT current transducers are ideal for a wide range of current measurement applications, especially those that demand precise, high-bandwidth sensors with low angular shift. This versatility encompasses various scenarios, including:
 
E-Mobility Measurements: Covering everything from quiescent DC currents to the analysis of higher harmonics of PWM switching frequencies, which may extend into the MHz range.
Motor and Inverter Testing: The DC-CT-1000I-S22DA transducer stands out as an excellent choice for current sensing applications, especially in the rigorous testing environments of motors and inverters. With its impressive high bandwidth and minimal angular shift, this transducer proves to be a reliable and efficient solution, meeting the demands of the most challenging motor and inverter testing scenarios including efficiency testing.
Power Quality Measurements: Particularly useful in the examination of power quality in renewable energy sources or battery storage systems.
High-Power Applications: Well-suited for demanding environments like railway systems, as well as power transmission and distribution grids.
Other Applications: Serving as a valuable feedback element in precision power supplies or calibration units, contributing to their overall accuracy and performance.
 
In essence, DC-CT current transducers offer a comprehensive solution for applications where precision, high bandwidth, and minimal angular shift are crucial, spanning diverse fields such as e-mobility, power quality analysis, high-power systems, and more.