Milesight Smart Current Transformer CT303, CT305 & CT310

TheMilesight CT3xxis a LoRaWAN® Smart Current Transformer designed for real-time and remote energy monitoring and analysis. It is suitable for efficient energy management in smart buildings, machine failure detection, and industrial applications. The CT3xx offers multiple current measurement options (300A, 500A, and 1000A), making it highly adaptable for diverse monitoring needs. Its non-invasive clamp design ensures quick and safe installation without disrupting power supply, and its self-powered capability eliminates the need for batteries or external wiring. The device’s compact form factor enables flexible installation in various indoor environments. Compliant with standard LoRaWAN® gateways and the Milesight Development Platform, it supports web-based remote monitoring and management

Features

• Real-Time Monitoring: Reports RMS current and accumulated current data at minute intervals, with sampling intervals as low as 1 second for fast alarm response.
• High Accuracy: Sampling frequency up to 3.3kHz with a measurement accuracy of ±1%, resolution of 1mA.
• Self-Powered: Operates using the induced current from the measured wire, removing reliance on external power sources or batteries.
• Non-Invasive Installation: Clamp-on design allows tool-free setup, avoiding power shutdowns and circuit modification.
• Three-Phase Detection: Simultaneous detection across three phases with selectable detection ranges (300A, 500A, or 1000A versions available).
• Temperature Monitoring: Supports external NTC wire temperature sensor for cable temperature measurement, with an accuracy of ±1%.
• Threshold & Overrange Alarms: Supports alarms for threshold value breaches and overrange current, signaled via an LED indicator.
• LoRaWAN® Connectivity: Fully compliant with standard LoRaWAN® gateways and network servers.
• Firmware Update Over the Air (FUOTA): Supports remote firmware upgrades.
• Compact and Robust: Small footprint, robust PBT+PC (UL94 V0) housing, with ingress protection rating of IP30.
• Remote Web Monitoring: Easily integrated with Milesight’s platform for configuration and real-time data visualization over the web.
• Wide Operating Range: Functions in various environmental conditions, with broad operating and storage temperature limits.

Technical Documents

• Datasheet
• User Guide

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