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Wenzhou Legy Electric Meter Technology Co., Ltd., founded in 2002 in Wenzhou, China, operates as a specialized manufacturer focused on the engineering and mass production of Three Phase Prepaid Energy Meters. As a dependable B2B partner, our factory delivers robust metering devices that prioritize revenue security and operational efficiency for industrial parks, commercial complexes, and utility providers. With over two decades of hands-on manufacturing experience, every Three Phase Prepaid Energy Meter undergoes stringent quality inspections and holds CE, CB, and ROHS certifications. We provide tailored metering solutions for global commercial and industrial clients, combining factory-direct pricing with responsive after-sales support to meet diverse high-power prepayment needs.
A Three Phase Prepaid Energy Meter is an industrial-grade electronic device that requires users to purchase electricity credits before consumption, automatically disconnecting power when the balance is depleted. It integrates three-phase precision energy measurement with a secure payment and load control system, eliminating post-payment billing cycles and manual collection efforts for high-power applications. Belonging to the category of industrial prepayment metering instruments, it is a critical solution for factories, commercial buildings, and agricultural facilities, effectively preventing revenue loss and empowering users to manage their high-power energy budgets proactively.
Three Phase Prepaid Energy Meter is rated for 3×220/380V AC with direct connection up to 100A or CT connection for unlimited capacity; features robust copper terminals and arc-suppression relays designed to withstand frequent high-current switching without contact welding or degradation.
Built-in EEPROM stores up to 5 years of billing records and tariff data; supports emergency credit mode allowing 10-50 kWh of post-paid usage during network failures, preventing production line shutdowns due to communication loss.
Supports 4-channel relay output for independent control of different load types (e.g., lighting, HVAC, machinery); enables priority-based load shedding during low-balance scenarios to maintain critical operations while cutting non-essential power.
Operating temperature range -40°C to +70°C with conformal coating on all PCBs; IP65-rated enclosure with UV-resistant polycarbonate housing and stainless steel terminal covers for outdoor or harsh factory environments.
Records 200+ event types including phase loss, overvoltage, tamper attempts, and relay operations with millisecond-level timestamps; supports remote retrieval of event logs for forensic analysis and maintenance planning.
Emergency credit and multi-channel load management prevent unexpected power cuts to critical machinery, reducing production downtime by up to 90% compared to standard prepaid meters that disconnect all loads simultaneously.
Industrial-grade hardening with conformal coating and IP65 enclosure ensures reliable operation in dusty, humid, or high-temperature factory settings, extending service life to 15+ years without performance degradation.
Millisecond-level event logging with tamper-proof storage provides irrefutable evidence for billing disputes, theft investigations, and maintenance claims, reducing administrative resolution time by 70%.
Multi-channel relay output allows facility managers to define custom load priorities, ensuring essential operations continue during low-balance periods while automatically shedding non-critical loads to conserve credit.
Robust terminal design and arc suppression eliminate contact welding issues common in industrial prepaid meters, reducing maintenance visits by 60% and extending relay life to 100,000+ switching cycles.
Three Phase Prepaid Energy Meter multi-channel load management prioritizes CNC machines and conveyor systems over lighting and HVAC during low-balance periods, preventing costly production interruptions while maintaining safety systems.
IP65 enclosure and conformal coating protect against corrosive vapors and high humidity, while emergency credit mode ensures continuous operation of critical process equipment during network outages.
Priority-based load shedding keeps refrigeration compressors running during low-balance scenarios, preventing spoilage of temperature-sensitive goods while cutting non-essential lighting and office power.
Environmental hardening withstands high humidity and chemical exposure from fertilizers, while multi-channel control separates climate systems from irrigation pumps for optimized credit usage.
Rugged IP65 design survives dust, vibration, and temperature extremes, while offline billing ensures accurate metering in areas with unreliable cellular coverage.
Emergency credit mode provides uninterrupted power for medical equipment and communication systems during grid instability, while tamper-proof logging prevents unauthorized usage in high-traffic temporary facilities.
A: Facility managers can assign priority levels to each of the 4 relay channels via the management platform. When balance drops below a set threshold, the meter automatically disconnects the lowest-priority channel first (e.g., non-essential lighting), then progressively sheds higher-priority channels only if balance continues to deplete. Critical loads (e.g., refrigeration, safety systems) remain powered until emergency credit is exhausted, ensuring production continuity while conserving credit.
A: Event logs are stored in tamper-proof EEPROM with hardware-level write protection, making them immune to power loss, magnetic interference, or unauthorized access attempts. Even if the meter is physically opened or power is cut, all recorded events remain intact and can be retrieved remotely once connectivity is restored. The logs include millisecond timestamps and event types, providing a complete forensic trail for billing disputes or theft investigations.
Wenzhou Legy Electric Meter Technology operates a dedicated 5,000㎡ production line for Three Phase Prepaid Energy Meters, equipped with automated relay testing stations and environmental simulation chambers that replicate industrial conditions including -40°C to +70°C temperature cycles, 95% humidity, and vibration profiles matching factory floor operations. Our quality assurance process includes 100% relay cycle testing (10,000+ cycles per unit) and conformal coating thickness verification using X-ray fluorescence analyzers, ensuring every meter meets industrial durability standards before shipment. We offer specialized OEM/ODM services for industrial prepaid meters, including custom relay configurations, enclosure modifications for harsh environments, and integration with third-party industrial energy management systems, with a minimum order quantity of 200 units and a 25-day lead time for customized models. Our export team has 18+ years of experience handling industrial equipment logistics, including hazardous material certifications and customs clearance for markets with strict industrial equipment regulations such as the EU, North America, and Southeast Asia.
We specialize in supporting industrial partners with technical expertise beyond standard metering, offering free load prioritization consulting, emergency credit configuration assistance, and on-site commissioning support for complex industrial installations. Our engineering team has extensive experience with industrial prepayment systems across manufacturing, cold chain, and agricultural sectors, enabling us to provide tailored solutions that address specific operational challenges such as production continuity, environmental durability, and forensic-grade audit requirements. We actively collaborate with industrial energy management software providers to ensure seamless integration of our prepaid meters with existing facility management platforms, reducing deployment complexity and accelerating time-to-value for our partners. Our cooperative approach focuses on long-term operational success rather than transactional sales, and we are committed to becoming a trusted technical partner for industrial organizations seeking reliable, durable, and audit-ready prepaid metering solutions.
