CRD4110-15

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Current Transducers

CRD4110-15 is a type of current transducers (CTs). It conversts alternating current (AC) into a proportional direct current (DC) for measurement and monitoring. CTs measure the electric current consumed in single and three-phase circuits using conventional current transformers (CTs). This article discusses the application field and working principle of the CRD4110-15.

Application Field

CRD4110-15 is a compact, low-cost AC current transducer that is unrivalled in its accuracy and precision. It is suitable for use in residential applications, especially in home automation systems, industrial applications, including process control for manufacturing lines, energy distribution and power generation, and electric utilities. The CRD41AC range features current inputs of 5A, 10A, or 20A for single-phase and three-phase applications.

The device is highly accurate and since it can be easily instlled make it the ideal solution for electrical contractors and plant maintenance staff. It is a reliable choice with overload protection for all inputs up to 600VAC, which makes it suitable for a variety of applications such as monitoring electricity consumption for billing and metering.

Working Principle

The CRD4110-15 AC current transducer works on the principle of electromagnetic induction. The transducer consists of a core and two coils, both formed within a single casing- a primary and secondary winding- wrapped around a magnetic core. When an alternating current flows through the primary coil, it generates a magnetic field, which induces an electromotive force (EMF) in the secondary coil. This EMF is proportional to the primary current and is also AC in nature, but of a different frequency.

The secondary EMF is then rectified and amplified before being outputted to a load with an open drain output to reduce noise. The output is isolated from the primary winding, ensuring safety against short circuits and other electrical hazards. The device is also protected against user errors, such as shorting of the output and incorrect connection.

Conclusion

In conclusion, the CRD4110-15 is an AC current transducer that is ideal for residential and industrial applications that require accurate current measurements. It is a reliable, cost-effective solution with overload protection up to 600VAC. The working principle of the CRD4110-15 is based on electromagnetic induction, in which an alternating current passing through the primary coil induces an electromotive force (EMF) in the secondary coil. This EMF is then rectified and amplified before being outputted with an open drain output.

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