CT310

In Stock

1000A Smart Current Transformer

Self-powered three-phase LoRaWAN current monitoring with non-invasive split-core clamps.

Features

  • Three-phase measurement (one-to-three clamps)
  • Self-powered from the measured circuit, no batteries
  • ± 1% accuracy, up to 3.3 kHz sampling
  • Real-time accumulated ampere-hours (1 s)
  • Threshold, over-current, temperature & low-voltage alerts
  • Non-invasive split-core clamp install
  • Optional external wire temperature sensor
  • FUOTA firmware updates

Hardware

  • Rated 1000 A per CT (3 clamps)
  • Wire hole Φ 51 mm
  • LoRaWAN Class A, SMA antenna
  • USB Type-C config / power
  • IP30, blue PBT + PC
  • Up to 12 h standby after power-off

Applications

Building main incoming lines, factory main distribution cabinets, large chillers, data-centre power circuits, EV charging stations and transformer low-voltage sides.

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    Description

    CT310 Description

    Overview

    The CT310 is a LoRaWAN three-phase smart current transformer for wireless energy monitoring and usage analysis. With a 1000 A range and a Φ51 mm wire hole, it is sized for main power circuits, large equipment and high-capacity electrical systems.

    Three-Phase, Self-Powered Monitoring

    A one-to-three clamp design measures up to three phases at once, and the device harvests power directly from the measured circuit, eliminating batteries and external wiring while keeping continuous operation.

    High-Accuracy Measurement

    With ±1% accuracy, sampling up to 3.3 kHz and a 1 s sampling rate, the CT310 reports RMS current and accumulated ampere-hours in real time for detailed energy analysis.

    Smart Alerts

    Configurable threshold, over-current, wire-temperature and low-voltage alerts (with an LED indicator) enable swift action, with an optional external NTC sensor for cable temperature.

    Non-Invasive Installation

    The split-core clamp attaches around existing wires without de-energizing the circuit, so it deploys quickly in distribution boxes for retrofit projects without downtime.

    Integration

    Compliant with standard LoRaWAN gateways and the Milesight Development Platform, the CT310 forwards data to BMS or energy-management systems for centralized monitoring.

    Industry Applications

    CT310 Industrial Applications

    Building Main Power

    Main incoming lines and main distribution cabinets are monitored phase by phase to track energy trends and detect anomalies, all without power interruption.

    Large Equipment

    Large chillers, EV charging stations and transformer low-voltage sides gain non-invasive current monitoring for status detection and predictive maintenance.

    Data Centres & Industry

    Data-centre power circuits and high-capacity electrical systems track load and ampere-hours in real time, with wireless LoRaWAN backhaul.

    Retrofit Projects

    Split-core clamps fit existing high-current wiring, enabling fast deployment without cutting wires or shutting down equipment.

    Specifications

    Electrical Measurement

    Detection Parameter RMS current
    Sampling Frequency 3.3 kHz
    Working Frequency 50 ~ 60 Hz
    Rated Primary Current (per CT) 1000 Arms
    Rated Secondary Current 150 mArms
    Minimum Reporting Current 10 Arms (1 min interval); 8.5 Arms (10 min interval)
    Accuracy ± 1%
    Resolution 1 mA
    Temperature Sensor 1 × NTC sensor, −20 °C ~ 100 °C, ± 1% (optional)

    Wireless Transmission

    Protocol LoRaWAN®
    Antenna Connector 1 × 50 Ω SMA connector (center pin: SMA female)
    Frequency CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
    Tx Power 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
    Sensitivity −137 dBm
    Mode OTAA/ABP Class A

    Others

    Button 1 × reboot button
    LED Indicator 1 × status / alarm indicator
    Port 1 × USB Type-C for power, configuration, console or temperature-sensor connection

    Software

    Configuration USB Type-C or downlink
    Advanced Feature Threshold alarm, overrange alarm, FUOTA

    Physical Characteristics

    Power Supply Induced current from the measured circuit; or 5 V via USB Type-C
    Insulation Voltage 3 kVac (r.m.s.) (1 mA / 1 min)
    Color / Material Blue, PBT + PC (UL94 V0)
    Cable Length 1 m
    Operating Temperature Transceiver: −20 °C ~ 70 °C; CT clamp: −40 °C ~ 55 °C
    Relative Humidity ≤ 95% (non-condensing)
    Ingress Protection IP30
    Dimensions Transceiver: 38 × 34.5 × 16 mm; CT clamp: 97.1 × 119 × 59.5 mm; wire hole: Φ 51 mm
    Weight Transceiver: 13.05 g; per CT clamp: 855.55 g
    Installation Transceiver: cable-tie mounting; CT clamp: suspended on the testing conductor

    Approvals

    Regulatory CE, FCC, UL508
    Order Codes

    Order Codes

    SKU: CT310

    CT310 – three-phase LoRaWAN current transformer, 1000 A per CT, Φ 51 mm wire hole.

    One antenna type is supplied as standard; mini stubby (50 mm), stubby (108 mm) and magnetic antennas are available as options. An external NTC wire temperature sensor is also optional.

    Specify the LoRaWAN frequency band (EU868, US915, AS923, etc.) when ordering.

    Order by referencing the SKU – contact info@easynt.com

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