CQ330G Sensors, Transducers

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Current Transducers (CTs) are widely applied in industry, research and experimental work, since they can detect, measure and control the current and voltage of a circuit with excellent accuracy and efficiency. Specifically, CQ330G is a generic AC current transducer, which has recently been incorporated into a number of new industrial applications due to its advantages in measurement accuracy, power supply flexibility and cost effectiveness. This paper discusses CQ330G\'s application field and its working principle.

CQ330G can be used in the fields of stator-rotor angle measurement for wind turbine generator and high current switch control applications in industrial automation. In addition, its fast response time and ample measurement accuracy make it suitable for many current measurement applications, such as solar PV systems, variable-frequency drive systems, power system analysis, transient analysis, wind farm protection, current harmonic monitoring, current power factor correction, and current discrepancy monitoring.

The CQ330G transducer is based on the principle of the Rogowski coil. It utilizes a precision excitation signal together with the Rogowsky coil to generate an AC voltage proportional to the sine wave waveform of the current in the monitored circuit. The voltage output is amplified by an internal amplifier, filtered and converted into a digital signal. This digital signal is sent to a data acquisition system, which processes it to calculate the parameters that need to be monitored for the application.

This current transducer also has a wide range of instrument features, such as wide dynamic range, low power consumption, high accuracy, and no zero drift. CQ330G also provides better accuracy over its entire operating range. This is due to its recent improvements in circuit design, which allows for a better regulation of the excitation signal as well as the Rogowski coil output. This enables it to accurately measure the currents even under varying conditions.

In conclusion, CQ330G is a practical and cost effective current transducer. Its wide range of applications, low power consumption, and high accuracy make it a very attractive device for both industrial and research applications. Furthermore, its recent improvements in circuit design and features make it an even more attractive choice for today\'s market. This makes the CQ330G transducer an ideal choice for a variety of applications, ranging from stator-rotor angle measurement to power system analysis.

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