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Three Phase Three Wire Meters Manufacturer.

High-performance smart metering infrastructure for global utility networks and sustainable energy grids.

Product
Narrative

Technical Innovation & Quality Heritage

YTL’s Three Phase Three Wire Meters (3P3W) are specialized for Delta-connected electrical systems commonly found in industrial power grids. Unlike standard residential meters, these units are designed to measure energy in systems without a neutral conductor. As an experienced manufacturer, Zhejiang Yongtailong has optimized these meters for high-voltage industrial environments, offering exceptional stability and Class 0.5s precision. They are widely used for monitoring large motors, pumps, and factory feeders where only three phases are present. Featuring robust RS485 communication and optional harmonic analysis, our 3P3W smart meters provide the specialized metrology needed for heavy industry, ensuring accurate billing and load monitoring for pure 3-phase loads with the highest degree of reliability.

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Technical Datasheet

Technical Category3P3W Industrial Specification
Connection Type3 Phase 3 Wire (Delta Connection)
Voltage Input3x100V, 3x380V, 3x400V (Configurable)
AccuracyClass 0.5s or Class 1.0 Active
CommunicationRS485 Modbus-RTU / DLMS
Protection ClassIP54 for industrial enclosure mounting

Product Application

  • Industrial Motor Control
  • High-Voltage Substation Monitoring
  • Delta-Grid Energy Auditing

Industrial Motor Control

The standard solution for monitoring the performance of large 3-phase industrial motors. Since these motors are often connected in a Delta configuration without a neutral wire, a standard 3P4W meter cannot be used. Our 3P3W smart meter accurately tracks the active and reactive power consumption of the motor, helping maintenance teams detect early signs of winding stress or load imbalances that could lead to expensive downtime, while providing the data needed for precise production cost analysis.

High-Voltage Substation Monitoring

Used on the secondary side of potential and current transformers in high-voltage substations. The 3P3W meter's high precision (Class 0.5s) and ability to work in pure 3-phase systems make it ideal for monitoring total energy flow across industrial feeders. It provides critical data for grid operators to balance the load and manage reactive power compensation, ensuring the stability of the local power network under varying industrial demand cycles.

Delta-Grid Energy Auditing

Perfect for older industrial parks or specific regional grids that utilize Delta wiring. These meters allow energy auditors to capture detailed load profiles and power quality data without the need for a neutral reference. By monitoring voltage sags, swells, and harmonics in the 3P3W system, facility managers can improve the overall efficiency of their plant and protect sensitive electronic equipment from electrical noise commonly found in heavy-duty manufacturing environments.

Product Advantages

Specialized Delta Metrology

Engineered specifically for systems without a neutral wire, ensuring 100% accurate measurement using the 2-wattmeter method for 3-phase 3-wire networks.

Industrial-Grade Durability

Built to withstand the high electromagnetic interference and voltage fluctuations typical of heavy industrial sites, providing consistent data year after year.

Revenue-Grade Precision

Available in Class 0.5s accuracy, making these meters suitable for high-value industrial billing where small errors can result in significant financial differences.

Frequently Asked Questions

  • Q: Can I use this meter on a 4-wire system?

    A: No, this meter is specifically for 3-wire Delta systems. For systems with a neutral wire, please use our 3-phase 4-wire (3P4W) models.

  • Q: Does it support remote reading?

    A: Yes, it comes with a standard RS485 port and supports both Modbus-RTU and DLMS protocols for integration into factory-wide monitoring systems.

  • Q: Can it measure reactive power?

    A: Yes, the meter provides full 4-quadrant measurement, tracking both active and reactive energy, which is essential for managing power factor penalties.

  • Q: What is the maximum voltage?

    A: Our standard models handle up to 400V or 480V directly. For higher voltages, the meter is used in conjunction with Potential Transformers (PTs).

  • Q: How is it different from a standard 3-phase meter?

    A: It uses a different internal calculation method (Aron connection/2-element) because there is no neutral to act as a common reference point.

Welcome To A National High-tech Enterprise

Established in 2000, Zhejiang Yongtailong Electronic Co., Ltd. is located in Tongxiang. As a professional Three Phase Three Wire Meters manufacturers and Three Phase Three Wire Meters suppliers in China , YTL designs and produces electronic energy meters which are cost-efficient and ideal for the use in solutions for AMR/AMI at residential as well as industrial applications.YTL was one of the first companies in the domestic market with which had an internal R&D department as well as international sales business. Since our foundation in 2000 we have grown to a manufacturer which complies and meet to many specifications from our national and international partners. At present our export volume makes us a leading company for technology and product export to more than 60 countries throughout the world.YTL is devoted to develop and design all types of electronic energy meters, concentrators and solution applications. With a combined design of the special accessories, we have successfully developed series of competitive products of small size, multifunction, low power consumption and excellent performance. We offer a one-to-one service to our partners. With annually over 68 projects that are successfully finished and holding over 500 patents of design rights, we are also advanced in the technology and patents of current sampling.

  • 2000

    Established In

  • 500+

    Employees

  • 60+

    Export
    Countries

  • 500+

    Patent

  • 10million+

    sets per year

YTL Honor

  • MID
  • KEMA
  • DLMS
  • IEC
  • KEMA
  • SGS

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