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Wenzhou Legy Electric Meter Technology Co., Ltd., founded in 2002 in Wenzhou, China, operates as a dedicated China manufacturer focused on the design, production, and export of robust three phase energy meters. As a reliable supplier for global B2B buyers, our factory delivers industrial-grade metering devices that prioritize measurement stability and long-term operational durability over unnecessary digital complexity. With more than two decades of hands-on manufacturing experience, we ensure every three phase energy meter undergoes strict quality inspections and holds CE, and ROHS certifications. We provide tailored solutions for international commercial and industrial clients, combining competitive factory pricing with dependable after-sales support to meet diverse global power metering needs.
A three phase energy meter is an integrating instrument designed to measure and record the total electrical energy consumed by three-phase AC loads over a specific period. It operates by continuously monitoring three-phase voltage and current, calculating instantaneous power, and integrating it over time to determine total energy consumption in kilowatt-hours (kWh). Belonging to the category of industrial power measurement instruments, it is one of the most widely adopted solutions for commercial buildings, industrial facilities, and infrastructure projects, effectively ensuring accurate billing and supporting energy efficiency management.
Class 1.0 accuracy compliant with IEC 62053-23, featuring a start-up current of 0.002Ib to reliably capture low-load consumption; rated voltage 3×220/380V AC at 50Hz, with current options of 5(60)A, 10(100)A, or 15(120)A to match diverse industrial loads.
Equipped with a 6+2 digit LCD screen for clear kWh readout and phase indicator lights; non-volatile memory retains cumulative energy data for ≥10 years, with no complex menus or remote functions for straightforward operation.
Flame-retardant PC housing with UL94V-0 rating, electronic circuitry with overcurrent, overvoltage, and phase-loss protection; IP54 protection for indoor and outdoor use, operating temperature -25°C to 55°C, suitable for typical industrial environments.
Standard DIN-rail or wall-mount design with pre-wired terminals, no special tools or configuration required; compatible with common industrial distribution panels, installable by licensed electricians in under 15 minutes.
Meets IEC 62053-23 and national three-phase energy meter standards, with CE, ROHS, and local safety certifications; focused on reliable basic electronic metering for commercial and industrial billing without smart grid or IoT features.
The Three Phase Energy Meter design distributes electrical load evenly across three conductors, significantly reducing voltage fluctuations and power losses compared to single-phase systems, which ensures stable operation for sensitive industrial equipment and commercial HVAC systems.
Capable of handling heavy-duty motors, compressors, and large-scale machinery without external starters, making it the ideal choice for factories, warehouses, and commercial buildings that require continuous high-power supply.
Features inherent redundancy where the remaining two phases can sustain partial operation if one phase fails, minimizing downtime and preventing total power loss in critical industrial and commercial facilities.
Delivers more power using thinner conductors due to balanced load distribution, reducing infrastructure costs and transmission losses over long distances while maintaining high energy efficiency.
Built with robust electronic components and protective circuits designed to withstand harsh industrial environments, including temperature extremes, electromagnetic interference, and power surges, ensuring long-term operational stability.
Three Phase Energy Meter is installed at the main electrical entry to measure total building energy consumption for utility billing; electronic design with no mechanical wear ensures long-term accuracy and reduces maintenance needs for property managers.
Used for individual floor or department metering in multi-tenant buildings, providing clear and accurate electronic billing for tenants without the need for remote monitoring or complex management systems.
Measures energy consumption for individual production lines or equipment with electronic accuracy, supporting fair cost allocation without unnecessary smart features that increase cost.
Installed to track energy usage for individual zones with reliable electronic metering, providing accurate billing data for facility management without remote access or advanced analytics.
Replaces aging mechanical meters with standard electronic models for improved accuracy and durability, without the need for IoT upgrades or smart grid integration in public facilities.
Provides reliable electronic energy measurement for temporary three-phase power supply with simple installation and no complex configuration, suitable for short-term use with basic billing requirements.
A: A 3P4W three phase energy meter connects to three live wires and one neutral wire, making it suitable for unbalanced loads commonly found in commercial buildings and mixed-use facilities. A 3P3W three phase energy meter connects only to three live wires and is designed for balanced three-phase loads such as industrial motors and heavy machinery. Choosing the correct wiring type is critical for accurate measurement and billing compliance.
A: Yes, this three phase energy meter supports both direct connection and CT connection methods. For high-current industrial applications, CTs are recommended to ensure safe and accurate metering. When using CTs, it is essential to set the correct CT ratio in the meter’s configuration to avoid measurement errors and ensure billing accuracy.
Wenzhou Legy Electric Meter Technology operates as a specialized China factory with a 5,000㎡ production facility dedicated to three phase energy meter manufacturing. Our in-house quality control team conducts 100% functional testing on every unit before shipment, including load accuracy verification, phase sequence detection, and environmental stress screening. We maintain a flexible OEM/ODM production line capable of handling orders as small as 300 units with a standard lead time of 20 days. Our export department has over 18 years of experience handling international logistics, customs clearance, and certification documentation for markets across Europe, North America, Southeast Asia, and the Middle East, ensuring smooth delivery and compliance for every order.
We are committed to building sustainable partnerships with global distributors, EPC contractors, and utility companies by offering transparent pricing, flexible payment terms, and responsive technical support. Our engineering team provides free installation guidance and troubleshooting assistance to ensure proper deployment in the field. We actively seek long-term collaborations with partners who value manufacturing reliability and cost efficiency, and we are prepared to support your business growth with consistent product quality and dedicated service. Our goal is to become your trusted supplier for three phase energy metering solutions worldwide.
