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QD-CT Multi-Channel AC Current Acquisition Module
QD-CT multi-channel AC current acquisition modules are designed to simplify current monitoring across multiple electrical circuits. With 4, 8, 12 and 16-channel configurations, the series supports different monitoring requirements without changing the basic measurement approach. Synchronous sampling allows current data from independent channels to be captured on a common time basis, supporting coordinated monitoring of industrial power distribution and electrical loads. The module provides a practical solution for applications where several AC current measurements need to be collected and communicated from a single acquisition device.
Accurate AC current measurement is important in industrial systems where electrical waveforms may not remain perfectly sinusoidal. The QD-CT series uses a dedicated True RMS measurement chip to determine effective current values, including for distorted AC waveforms. With a specified basic error of ±0.5% of full scale, the module supports consistent current monitoring across its independent channels. This makes QD-CT suitable for applications such as industrial power distribution monitoring, motor current analysis and electrical load supervision, where dependable current data is needed for monitoring and operational decisions.
Electrical isolation is an important consideration when integrating current measurement equipment into industrial control systems. The QD-CT series features three-terminal isolation between its power, input and output circuits, with a specified isolation withstand voltage of 1.5 kV AC for one minute. This design provides electrical separation between the relevant circuits while supporting multi-channel AC current acquisition. Combined with RS-485 Modbus RTU communication, the module can be integrated into industrial monitoring systems where dependable current measurement and clearly defined circuit isolation are required.
