1、 Background

With the rapid iteration of new energy generation technologies such as photovoltaic grid connection, energy storage systems, and micro reverse systems, energy management has put forward higher requirements for the accuracy, response speed, and multifunctionality of electricity metering. Traditional energy meters generally suffer from problems such as single functionality, poor adaptability, and lagging data exchange, making it difficult to meet the core requirements of "bidirectional metering, real-time monitoring, and intelligent regulation" in the new energy scenario. Whether it is energy statistics for household distributed photovoltaics or charge and discharge management for industrial energy storage systems, there is an urgent need for an intelligent instrument that integrates high-precision measurement, convenient installation, and stable communication to provide data support for the efficient operation and refined management of new energy systems. Ankerui Electric has developed the ADL400N-CT rail type multifunctional energy meter, which accurately matches the measurement and control needs of new energy scenarios.

2、 Product Overview

The ADL400N-CT rail type multifunctional energy meter is an intelligent metering device designed by Ankerui Electric specifically for new energy generation systems, focusing on the energy management needs of photovoltaic grid connection, energy storage, AC coupling and other scenarios. The product adopts a guide rail installation design, which has the advantages of small size, convenient installation, and fast response. It can achieve high-precision sampling and measurement of all electrical parameters (voltage, current, power, frequency, etc.), and supports bidirectional measurement of positive/negative active and reactive energy. Seamless integration with inverters or energy management systems (EMS) through RS485 communication interface enables anti backflow control, power generation regulation, battery charging and discharging management, and other functions. It is also equipped with segmented LCD display, button programming, and pulse output, providing full support for on-site operation and data tracing. It is the core equipment for energy metering and intelligent control of new energy systems.

3、 Product features and parameters

（1） Core Features

1. High precision measurement, reliable dataThe measurement accuracy of parameters such as voltage, current, and power reaches ± 0.5%. The measurement of active energy meets the B-level standard, and the accuracy of reactive energy reaches level 2, ensuring accurate traceability of energy data in new energy scenarios and meeting the needs of measurement and accounting.

2. Full parameter coverage, comprehensive functionalityIt can measure full power parameters such as three-phase voltage, current, active/reactive/apparent power, power factor, frequency, etc. It supports forward/reverse and phase separated energy metering and is suitable for complex energy flow management in new energy systems.

3. Quick response, real-time controlThe response rate of parameters such as voltage, current, and power is ≤ 100ms, and the response rate of electrical energy parameters is ≤ 1s, providing real-time data support for the EMS system to ensure the rapid execution of functions such as anti backflow and charge discharge regulation.

4. Flexible adaptation, easy installationAdopting a guide rail installation design, it is compact in size and suitable for compact spaces inside cabinets; Supports both three-phase four wire and three wire wiring methods, compatible with the wiring requirements of different new energy systems, and efficiently deployed on site.

5. Stable communication, efficient operation and maintenanceEquipped with RS485 interface, supporting Modbus RTU communication protocol, adjustable baud rate from 1200bps to 38400bps, capable of remote reading of data and configuration parameters; Support button programming and LCD display, convenient on-site parameter setting and data viewing.

（2） Key parameters

• rated voltageThree phase 3 × 230/400V, input range ± 20%, overload 1.2 times rated value (continuous), 2 times rated value (continuous for 1 second)

• rated current：AC 0.5-10 (80) A、AC 0.5-10 (120) A， Accuracy ± 0.5%

• frequency range：50/60Hz， Error ± 0.5%

• communication parametersRS485 interface, Modbus RTU protocol, address range 1-247, baud rate 1200-38400bps

• working environmentTemperature -40 ℃~+70 ℃, relative humidity ≤ 95% (no condensation), altitude ≤ 2000m, protection level IP51

• safety performancePower frequency withstand voltage AC3kV/1min, insulation resistance>100M Ω, double insulation design, in compliance with UL94-V0 flame retardant standard

• Other parametersActive pulse output, power consumption ≤ 2W, supports voltage/current shielding value setting, suitable for complex on-site environments

（3） Size and dimensions

4、 Application scenarios

The ADL400N-CT rail type multifunctional energy meter is widely used in various new energy generation and energy storage scenarios due to its high adaptability and comprehensive functions, including:

• Household/industrial and commercial distributed photovoltaic grid connected system: achieving accurate measurement and data upload of photovoltaic power generation, grid connected electricity, and self generated electricity consumption;

• Energy storage system: monitoring the voltage, current, power, and electrical energy data during the charging and discharging process, providing a basis for adjusting the charging and discharging strategy of the EMS system;

• Micro reverse system and AC coupling system: adapted for distributed small power generation unit energy metering, supporting multi unit data aggregation and remote monitoring;

• New energy power station auxiliary control system: used for monitoring the electrical energy of wind turbines and photovoltaic array branch circuits, achieving regional energy accounting and fault tracing;

• Industrial New Energy Transformation Project: Adapting to the electricity metering of factory photovoltaic roofs and energy storage supporting systems, assisting in energy consumption statistics and energy-saving analysis.

5、 Summary

The ADL400N-CT rail type multifunctional energy meter has the core advantages of "high precision, full functionality, and high adaptability", accurately matching the core requirements of energy metering and intelligent control in new energy scenarios. Its compact guide rail design, comprehensive parameter coverage, fast response capability, and stable communication performance not only solve the pain points of poor adaptability and data lag of traditional instruments in new energy scenarios, but also provide accurate data support and intelligent control methods for the efficient operation of photovoltaic, energy storage and other systems. Ankerui Electric relies on its profound accumulation of industrial metrology technology to meet the stringent requirements of the new energy industry in terms of stability and reliability. It has become the preferred equipment for energy measurement, data tracing, and intelligent operation and maintenance in the new energy system, empowering the refined management and efficient development of the new energy industry.