CRD4110-25

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Current transducers are essential components for measuring and controlling the flow of electricity in electrical components. In particular, they are used in applications such as motor protection, overload and short-circuit protection, motor starter protection, and power factor monitoring. The CRD4110-25 current transducer is a high-performance, cost-effective current transformer designed to measure currents ranging from 0.1 to 25 Amps.

Applications

The CRD4110-25 current transducer is designed to measure electrical current and provide the necessary outputs for a variety of applications, including motor protection, overload and short-circuit protection, motor starter protection, and power factor monitoring.

In particular, it can be used to protect motors by detecting current fluctuations. If current fluctuations exceed a pre-set limit, the normal operation is interrupted and an alarm signal is sent. This prevents overvoltages or overcurrents from occurring, helping to ensure the safe operation of the motor. Additionally, it can be used to monitor short-circuits in a power system to maintain system reliability and prevent outages. It can also be used to monitor and control motor starters, to ensure that the start-up current does not exceed the design current.

The CRD4110-25 is also useful for monitoring power factor. By monitoring power factor, it is possible to ensure the power factor is maintained within a specified range. This helps to improve the efficiency of the system, reduce emissions, and conserve energy.

Working Principle

The CRD4110-25 current transducer is a three-phase sensing device that monitors the current flowing through a three-phase system. It consists of three CTs (current transformers), each of which is designed to measure current in one phase. The output of the CT is proportional to the current in the phase and generates an alternating voltage output signal. These signals are then amplified and rectified to produce a voltage or current output signal.

The CTs are also equipped with a core that produces the output voltage. The magnetic field produced by the current in the phase is coupled to the core, inducing a voltage. This voltage is then rectified and amplified, resulting in a voltage output that is proportional to the current in the phase.

The output from the CTs is integrated and processed by a CPU and the relevant parameters are sent to the output. The output can then be used to control and monitor the power system, helping to ensure it operates safely and efficiently.

Conclusion

The CRD4110-25 current transducer is a high-performance, cost-effective transducer designed to measure currents ranging from 0.1 to 25 Amps. It is designed to measure electrical current and provide the necessary outputs for a variety of applications, including motor protection, overload and short-circuit protection, motor starter protection, and power factor monitoring. It consists of three CTs, each of which is designed to measure current in one phase, and the output is integrated and processed by a CPU. The output can then be used to control and monitor the power system, helping to ensure it operates safely and efficiently.

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