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SFM472 Series Three-Phase Multifunction Meter - Reliable Power Management from China Suppliers and Factory
Product Description
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:
- 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.
- 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.
⚡ Ideal Applications: 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
⚡ Utility Substations
Technical Parameters
| Parameters | Index | |
|---|---|---|
| Input | Voltage | Voltage (Un): 3×57.7/100…240/415 VAC |
| Voltage range: 0.8Un – 1.15Un | ||
| Current | Directly connected: 0.25 – 5(80) A | |
| Overcurrent withstand: 30Imax for 0.01s | ||
| Frequency | 50 / 60 Hz | |
| Wiring | Connecting capacity: from 16 to 25 mm² | |
| Display | LCD with white backlight; Max reading: 999999 kWh | |
| Accuracy | Active energy: Class 1, Class B | |
| Output | Communication | Interface: RS485 | Protocol: Modbus RTU |
| Pulse | Pulse constant: 800 imp/kWh | |
| Power Consumption | < 2W / 10VA | |
| Withstand | AC Voltage | 4kV / 1 min |
| DC Impulse | 6kV – 1.2µs waveform | |
| Climate Environment | Temperature | Operating: -25°C ~ +55°C |
| Storage: -40°C ~ +70°C | ||
| Humidity | ≤ 95% non-condensing, no corrosive gas | |
| Altitude | ≤ 2000 m | |
| Mechanical Environment | M1 | |
| Electromagnetic Environment | E2 | |
Frequently Asked Questions (FAQ)
What electrical parameters can the SFM472 series meter measure?
The SFM472 series meter measures a comprehensive set of electrical parameters including line-to-line and line-to-neutral RMS voltage, per-phase RMS current, active/reactive/apparent power (per phase and total), grid frequency, and both import and export active and reactive energy with cumulative metering.
What communication protocol does the SFM472 support for system integration?
The SFM472 uses an RS485 interface with the Modbus RTU protocol, enabling seamless integration with industrial control equipment such as PLCs, RTUs, SCADA systems, and host computers for centralized monitoring and data acquisition.
What is the operating temperature range of the SFM472 series meter?
The SFM472 is designed to operate reliably in temperatures ranging from -25°C to +55°C. For storage, it supports an extended range of -40°C to +70°C, making it suitable for a wide variety of industrial environments.
Can the SFM472 meter be used for both local display and remote monitoring?
Yes. The SFM472 supports dual operational modes. Its onboard LCD display with white backlight allows field personnel to view real-time measurements locally, while its RS485/Modbus RTU communication port enables remote data transmission to centralized monitoring and control systems.
What voltage and current inputs does the SFM472 support?
The meter supports a voltage input of 3×57.7/100 to 240/415 VAC with an operational range of 0.8Un to 1.15Un. For current, it supports direct connection from 0.25 to 5(80) A, with an overcurrent withstand rating of 30Imax for 0.01 seconds.
In which applications is the SFM472 series meter most commonly used?
The SFM472 is ideally suited for real-time power monitoring in 3-phase 4-wire (3P4W) systems. It is widely deployed in manufacturing facilities, commercial buildings, data centers, and utility substations where accurate energy metering, load analysis, and automated power management are required.