SFM472 Series Three Phase Multifunction Meter

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SFM472 Series Three Phase Multifunction Meter

Expanded Technical Specification: SFM472 Series Three-Phase Multifunctional DIN-Rail Meter

The SFM472 series three-phase multifunctional DIN-rail meter is a high-performance electrical monitoring device specifically engineered for seamless deployment in three-phase four-wire (3P4W) power grid systems. Optimized for commercial, industrial, and utility-scale applications, this compact DIN-rail mounted meter delivers precise, real-time measurement of a comprehensive suite of critical power parameters, making it an indispensable component for modern power monitoring and management systems.

Core Measurement Capabilities
The SFM472 series meter is calibrated to provide accurate readings of the following key electrical parameters, supporting both balanced and unbalanced load conditions:
● Voltage: Line-to-line (L1-L2, L1-L3, L2-L3) and line-to-neutral (L1-N, L2-N, L3-N) RMS voltage
● Current: RMS current for each of the three phases
● Power: Active power, reactive power, and apparent power (per phase and total system values)
● Frequency: Grid frequency fluctuations
● Energy: Import (consumed) and export (fed-back) active and reactive energy, with cumulative metering functionality


System Integration & Application Flexibility

Designed for versatility, the SFM472 series meter caters to dual operational modes to meet diverse on-site requirements:
1. Local Display Function: The meter features an on-board display that provides real-time visualization of measured parameters, enabling field personnel to conduct quick spot checks and verify system performance without additional equipment.
2. Centralized Measurement & Control System Integration: Beyond local monitoring, the meter’s detection data can be seamlessly transmitted to industrial control equipment (such as PLCs, RTUs, and SCADA systems) and host computers via standard communication protocols. This integration enables the construction of a unified, centralized measurement and control network, supporting remote data acquisition, real-time load analysis, energy consumption auditing, and automated power system management.

With its robust measurement precision, compact DIN-rail form factor, and flexible integration capabilities, the SFM472 series meter is ideally suited for real-time power monitoring in 3P4W systems across manufacturing facilities, commercial buildings, data centers, and utility substations.

Technical Parameters

ParametersIndex
InputVoltageVoltage(Un): 3*57.7/100…240/415VAC
  Voltage rang e : 0.8Un -1.15Un
 Currentdirectly connected: 0.25- 5(80) A
Overcurrent with stand: 30Imax for 0.01s
 Frequency50 / 60Hz
 WiringConnecting capacity: from 16 to 25 mm2
DisplayDisplay : LCD with white back- light
Max reading: 999999kWh
AccuracyActive energy: Class 1,Class B
  OutputCommun1cat1onInterface: RS485
Protocol : Modbus RTU
 Pulse  Pulse constant : 800im p/ kWh
Power consumption< 2W/ 10VA
WithstandAC voltage4kV/1 min
 DC impulse6kV-1 .2µ s waveform
Climate
environment
TemperatureOperating temperature : -25 °C~ + 55°C
  Storage temperature : -40 °C~ + 70°C
 Humidity≤ 95% non-condensing, no corrosive gas
 Altitude≤2000m
mechanical environmentM1
electromagnetic environmentE2