SFA Full-Factor Electrical Smart Meter
SFA Series
Integrated collection, control, communication and management, full electrical parameters + 4-channel temperature + residual current + 2 relays, 0.2S-level energy accuracy.
Product Overview
The SFA multi-factor electrical intelligent measurement and control unit is a multi-factor integrated intelligent measurement and control terminal developed by FEXLINK for energy management and electrical safety monitoring. It integrates collection, control, communication, and management in one unit, with gateway capabilities, and can be mounted on a 35mm standard DIN rail inside electrical control cabinets, distribution cabinets, or on the outside of monitored equipment. Standard configurations include full electrical parameter measurement of three-phase voltage, three-phase current, active/reactive power, power factor, system frequency, and active/reactive energy, with support for time-of-use metering of forward/reverse active and reactive energy; optional 0-31st harmonic analysis and three-phase unbalance dynamic monitoring functions; it also supports 4 temperature channels, 1 temperature and humidity channel, 1 residual current channel, 2 digital inputs, and 2 relay outputs. With matching dedicated transformers, it covers a current monitoring range of 5A~1000A (expandable up to 6000A), RS485/4G/RJ45 multi-communication access to the cloud platform, and an OLED high-definition screen for convenient local debugging and inspection.
Core Capabilities
Full electrical parameter measurement: three-phase voltage/current/power/power factor/frequency/energy with 0.2S class energy accuracy. Power quality analysis: 0-31st voltage/current harmonic component measurement and three-phase unbalance dynamic analysis. Multi-factor monitoring: 4 temperature channels + 1 temperature and humidity channel + 1 residual current channel + 2 digital inputs + 2 relay outputs. Wide-range adaptation: with dedicated sensors covering a 0-6000A current range, for cable/busbar applications. Product Features
Data GeneratedFull electrical parameters0.5-class/0.2S accuracy4-channel temperature + leakage2 relays linkageProduct FeaturesComplete Monitoring and Collection Functions
Three-phase full electrical parameter measurement, time-of-use metering of forward/reverse active and reactive energy, 4 temperature channels + 1 temperature and humidity channel + 1 residual current channel + 2 digital inputs + 2 relay outputs - one device meets multi-dimensional monitoring needs.
Power Quality Analysis
Supports 0-31st voltage/current harmonic component measurement and three-phase unbalance dynamic analysis, achieving unbalance monitoring and intelligent statistical analysis at each phase angle (optional function).
High-Precision Metering
Active energy accuracy defaults to Class 0.5, with monitoring accuracy up to Class 0.2S, meeting energy management requirements and working with backend software for time-of-use metering and energy consumption analysis.
Multi-Channel Temperature Monitoring
Supports 4 NTC temperature sensor channels for contact temperature monitoring and analysis, plus 1 temperature and humidity channel to track environmental changes in real time.
Residual Current Monitoring
Supports 1 residual current monitoring channel with a 10~3000mA range and Class 1 accuracy, enabling dynamic leakage detection to eliminate electrical hazards.
Linked Control
Supports 2 relay outputs (AC250V/3A, DC30V/3A) for easy threshold-based or custom linked control, enabling automatic response to anomalies.
Multi-Communication Integration
Two RS485 ports + one RJ45 port, with 4G, Zigbee, and LoRa expansion support, standard Modbus RTU protocol with MQTT support, integrating collection, control, communication, and management with gateway capabilities.
OLED Local Display
High-definition OLED screen + physical buttons for easy local data display and product configuration, convenient for debugging and inspection; an optional HMI screen supports building a fully localized monitoring strategy.
Multi-Module Expansion
Supports access to multiple monitoring modules including power quality, three-phase unbalance, smart meters, equipotential, electrical fire, leakage, digital input, lightning protection, lightning current, and grounding resistance. Selection Guide
