Lorawan 500A electrical consumption measurement sensor - CT305

Accurate and reliable monitoring of electrical parameters in demanding environments

The CT305 power meter sensor is designed to provide accurate and reliable monitoring of electrical parameters in demanding professional environments. This innovative sensor uses LoRaWAN® technology to ensure efficient data transmission and wide coverage. With a collection frequency of 3.3 kHz and a measurement accuracy of ±1%, the CT305 is ideal for tracking the RMS current value of electrical systems operating at frequencies of 50 to 60 Hz. The CT305 has a nominal primary current of 500A, and can detect nominal secondary currents of 150mA with a resolution of 1mA, enabling detailed power monitoring and granular currents.

Support for external temperature probe

This power sensor also supports NTC thermistor-based wire temperature probes, capable of measuring temperatures ranging from -20℃ to 100℃ with an accuracy of ±1%. This additional functionality allows for comprehensive monitoring of environmental conditions and operating parameters of electrical equipment. CT305 setup is made easy with a USB Type-C interface and PC toolbox, while a hardware reset button and a dual-color red and green LED light provide easy on-site control and diagnostic options.

Lorawan Communication

In terms of wireless connectivity, the CT305 uses the standard LoRaWAN® protocol with an external SMA female antenna interface, ensuring robust and stable transmission. The transmission power ranges from 16 to 20 dBm depending on the frequency, and the reception sensitivity reaches -137 dBm at 125 kHz SF=12, ensuring reliable communication even in harsh environments. The sensor supports OTAA/ABP Class A working modes, providing flexibility for integration into different energy management systems.

Quality materials, IP30 protection rating

Constructed with high-quality materials, the CT305 features a blue PBT+PC shell, providing an IP30 rating and UL94-V0 flammability resistance. The sensor and its host are designed to withstand a variety of operating and storage conditions, with respective temperature ranges from -20°C to 70°C for the host and -40°C to 55°C for the probe. The sensor installation method is simplified with an open-ended current clamp, allowing easy suspension to the conductor under test. This makes the CT305 an ideal solution for accurate and reliable energy monitoring in industrial and commercial environments.

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