Product Overview
The YADA ET903 / ET703 series Power Quality Analyzer are engineered to reliably monitor three-phase electrical systems. They support a wide range of electrical measurements including voltage, current, active and reactive power, total energy (kWh / kVarh), power factor, and more. With built-in communication (Modbus RS-485, optional RS-232, TCP/IP, etc.), these meters can integrate into SCADA, BMS, and energy management systems for real-time data acquisition and monitoring.
This robust meter suits distribution panels, factories, energy control centers, and commercial buildings. It is designed to deliver long-term stability and accurate readings under varied load conditions.
Key Features & Benefits
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Three-Phase Measurement — Measures all three phases (A, B, C) plus neutral, ensuring full system coverage
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Accurate & Reliable — Class 1 (or better) accuracy, suitable for billing, monitoring, and energy audits
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Multi-Parameter Output — Voltage, Current, Active Power, Reactive Power, Apparent Power, Power Factor, Frequency, Total Energy (kWh / kVarh), etc.
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Flexible Communication — Built-in RS-485 (Modbus RTU); optional versions with RS-232, Ethernet (Modbus TCP), or wireless
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LCD Display — Clear digital readout of all measured parameters with backlight (if applicable)
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Data Storage & Hold — Supports data retention during power outages or communication loss
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Compact & Mountable — DIN-rail or panel mount version, suitable for distribution boxes
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Wide Operating Range — Compatible with standard system voltages and currents
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Safety & Certification — CE, IEC standards compliance, robust insulation and protection
Technical Specifications
| Product Name | YADA ET903/ET703 Multi-functional Smart Power Meter | |||
| Meter Type | Three Phase Power Meter | |||
| Model No. | ET903/ET703 | |||
| Brand Name | YADA | |||
| Display Type | LCD Display | |||
| Measuring Energy Range | 0-99999.99kWh | |||
| Phase | 3 Phase | |||
| Accuracy Class | Class 0.5 | |||
| Operating Temperature | -10℃~ 50℃ | |||
| Communication | RS485(Modbus-RTU) | |||
| Installation | Panel Mounted, Size 92*92mm, 68*68mm optional | |||
| Input current | 5(6)A | |||
| Input Voltage | AC220V/380V | |||
| Auxiliary Power | AC85-265V / DC100-330V | |||
| Certificate | CE Certification(EN61010-1:2010, EN61000-6-1:2007+A1:2011, EN61000-3-2:2014, EN61000-3-3:2013, EN61000-6-2:2005) | |||
| Warranty | 2 Years | |||
| Dimensions | ET903-E: 98mm*98mm*78mm | |||
| ET703-E: 74mm*74mm*88mm | ||||
| Panel Mounted Size | 68*68mm | |||
| Net Weight | 0.327KG | |||
Wiring
Dimension & Installation
Certificates
Applications
The YADA ET903 / ET703 three-phase energy meter is ideal for:
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Industrial plants and manufacturing facilities
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Commercial buildings and offices
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Energy management systems in factories
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SCADA / BMS / EMS integration for centralized monitoring
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Billing and load analysis systems
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Renewable energy plants and solar power systems
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Data centers and infrastructure monitoring
Why Choose YADA ET903 / ET703?
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Proven Expertise — Decades of specialization in energy metering and power instrumentation
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Reliable Performance — Strict quality control, CE compliance, stable long-term operation
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Customization Options — Support for optional interfaces, firmware modifications, labeling
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Global Support & Warranty — Technical support, replacement policy, long-term parts availability
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High Precision & Stability — Suitable for both monitoring and billing-level accuracy
View more similar products
https://www.yada-electronics.com/product-category/power-meter/