Digital Multi-function Power Meter
Key attributes
| Brand | RW Energy |
| Model NO. | Digital Multi-function Power Meter |
| size | 72*72mm |
| Series | RWY |
Product descriptions from the supplier
The Digital Multi-function Power Meter is a modern power monitoring core device that integrates high-precision measurement, comprehensive monitoring, and intelligent communication. Utilizing a clear and intuitive digital display interface, it provides full-spectrum real-time data of the power system for you. It is the ideal choice for realizing fine-grained energy consumption management, enhancing operational efficiency, and ensuring power supply security in industrial automation, building management, data centers, and power distribution systems.
Core Functions, At a Glance:
Precision Measurement: Monitors critical electrical parameters including three-phase/single-phase voltage, current, active/reactive/apparent power, power factor, frequency, etc., in real-time, with leading accuracy (high precision).
Energy Metering: Accurately meters active energy and reactive energy (import/export), providing a reliable basis for energy consumption analysis and billing.
Power Quality Insight: Offers optional monitoring of power quality parameters such as harmonic content, voltage/current unbalance, etc., aiding in optimizing power supply quality.
Clear Display: Employs a high-brightness LED or LCD display (typically dual-row or multi-row), presenting data clearly and intuitively with rich information, facilitating fast on-site reading.
Flexible Communication: Integrates standard communication interfaces such as RS485, supporting mainstream industrial protocols like Modbus-RTU, Profibus, CANopen (depending on model configuration), enabling seamless integration into SCADA, EMS, BMS and other systems for remote monitoring and data acquisition (SCADA).
Intelligent Alarming: Provides out-of-limit alarm functionality, promptly detecting potential risks such as voltage anomalies or current overload.
Data Logging: Certain models feature historical data logging capability, facilitating history tracing and analysis.
Product Advantages, Worthy of Trust:
High Accuracy and Reliability: Ensures stable measurements and accurate, trustworthy data, meeting high-standard application requirements.
Comprehensive Function Integration: Addresses multiple monitoring needs with a single meter, reducing installation complexity and cost.
Convenient and Flexible Installation: Offers multiple form factors (square or DIN-rail mounted), allowing easy adaptation to various distribution panels/cabinets (switchboard/cabinet).
Powerful Compatibility: Utilizes standard communication protocols, ensuring easy integration with existing systems.
Rugged and Durable: Features an industrial-grade design, wide operating temperature range (e.g., -25°C to +70°C), and strong interference resistance (high immunity).
Assists Energy Efficiency Enhancement: Provides precise data support for energy audits and energy-saving renovations.
Technical Specifications：
| Parameter | Specification |
| Connection | Three-phase four-wire Y34 / Three-phase three-wire V33 |
| Signal Input - Voltage Range | 400V / 100V |
| Signal Input - Voltage Overload | Continuous: 1.2x, Instantaneous: 2x |
| Signal Input - Voltage Consumption | < 1VA |
| Signal Input - Current Range | 5A / 1A |
| Signal Input - Current Overload | Continuous: 1.2x, Instantaneous: 2x |
| Signal Input - Current Consumption | < 1VA |
| Frequency | 40-65Hz |
| Power Supply | AC220V (default) or AC/DC 80-270V |
| Energy Pulse Output | Passive optocoupler collector output Pulse width: 80ms ±20% |
| Communication | • Interface: RS485 (physically isolated) • Protocol: MODBUS-RTU • Baud rate: 1200-9600 bps • Parity: N81/E81/O81 |
| Analog Output | • Range: 0/4-20mA or 0-5/10V • Configurable variables via programming |
| Relay Output | • Type: Programmable alarm/trip relay • Rating: 5A/250V AC, 5A/30V DC • Trigger sources: Battery alarm, DI, AI, remote |
| Digital Input (DI) | • Type: Dry contact • Function: Programmable alarm mapping |
| Accuracy Class | • Voltage/Current: 0.5 • Active Energy: 0.5S • Reactive Energy: 1.0 • Frequency: ±0.1Hz |
| Display | High-definition LCD (integrated nixie tube type) |
| Environmental | • Operating: -10°C to +55°C • Storage: -20°C to +75°C |
| Safety Standards | • Insulation resistance: >5MΩ (signal/power/earth) • Dielectric strength: >2kV AC (signal/power/output) |
Wiring diagram：
You can configure parameters via the front-panel button, PC software (with RS485-to-USB adapter), or remote Modbus communication. It supports on-site calibration with standard instruments, and the calibration data is stored permanently without frequent adjustment.
Yes, it supports universal power supply (AC 85-265V or DC 24V) and complies with CE, UL, and RoHS certifications. It is widely used in power distribution systems, industrial automation, new energy (PV/energy storage), and building electrical projects worldwide.
It is equipped with Modbus RTU (RS485) as the standard communication protocol, compatible with PLC/DCS systems (Siemens, Schneider, ABB). It also provides 4-20mA DC/0-10V DC standard analog output and 2-4 路 relay output (DO) for control linkage.
The standard accuracy class is IEC 0.1 (error ≤±0.1%FS) or 0.5 (error ≤±0.5%FS), equipped with high-precision A/D conversion chips and anti-interference circuits, ensuring stable measurement in harsh industrial environments.
It supports measurement of 3-phase/1-phase voltage (V), current (A), active/reactive/apparent power (kW/kVAR/kVA), energy (kWh/kVARh), frequency (Hz), and power factor (PF), fully meeting IEC 61010 international measurement standards.
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