Overview
The ADL400(MID) DIN-rail multifunction energy meter is a MID-certified three-phase meter specially designed for international markets.
It integrates full electrical parameter measurement, bi-directional active/reactive energy metering, 2nd-31st harmonic analysis, and multi-tariff management, equipped with RS485 Modbus communication interface.
It is widely used in power systems, industrial enterprises, utilities, control systems, SCADA, and energy management systems.
Highlight
Multiple Wireless Options
- 4G / NB-IoT / LoRa / WiFi
- 470MHz wireless
- RS485 Modbus RTU
- Infrared communication
Full Measurement
- 0.5S accuracy class
- 2-31st harmonics & THD
- Voltage/Current unbalance
- Frequency & power factor
Advanced Functions
- 4DI + 2DO (optional)
- 4-channel temperature
- 1-channel leakage current
- Multi-tariff & demand
Easy Installation
- DIN35 rail mounting
- Split-core CT (live install)
- AC 85-265V wide supply
- ≤2W low consumption
Focus Areas
Tenant billing, common area energy monitoring, meeting MID metering certification requirements.
Production line load monitoring, equipment efficiency analysis, preliminary power quality diagnosis.
Bi-directional metering for PV systems, charge/discharge monitoring for energy storage.
Integrated as a data terminal into various energy management platforms.
Function
| Measurement | Metering | Extended Functions |
| Voltage (U) | Total Combined Active/Reactive Energy | Multi-tariff (4 tariffs, 4 zones, 14 intervals) |
| Current (I) | Forward/Reverse Active Energy | 48-month Historical Data |
| Active/Reactive/Apparent Power (P/Q/S) | Forward/Reverse Reactive Energy | 90-day Historical Data |
| Power Factor (PF) | Per-phase Active Energy | Maximum Demand & Timestamp |
| Frequency (F) | 4-Quadrant Reactive Energy | 4 Extreme Value Records |
| 2nd-31st Harmonic Voltage/Current | — | Active Pulse Output |
| Total Harmonic Distortion (THD) | — | RS485 Modbus Communication |
| Fundamental Power | — | Programmable Parameters |
| Zero-sequence Current | — | MID Certification |
| Voltage/Current Unbalance | — | — |
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Specification
| Item | Parameter |
| MID Certification | 2014/32/EU, M1 Mechanical Environment, E2 Electromagnetic Environment |
| Voltage Ratings | 3×230/400V (3P4W); 3×57.7/100V – 3×276/478V |
| Current Ratings | Direct connection: 10(80)A, 10(100)A; CT operated: 0.01-1(6)A |
| Auxiliary Power | Self-powered from measured line, <2W per phase |
| Active Energy Accuracy | Class C (1(6)A, 10(80)A); Class B (10(100)A) |
| Reactive Energy Accuracy | Class 2 |
| Voltage/Current Accuracy | ±0.2% |
| Clock Accuracy | ≤0.5 s/day |
| Pulse Output | Active optocoupler output; 400 imp/kWh (direct), 10000 imp/kWh (CT) |
| Communication | RS485, Modbus RTU |
| Baud Rate | 1200 – 38400 bps, programmable |
| Display | 12-digit segment LCD, white backlight, 3-button programming |
| Operating Temperature | -25℃ ~ +55℃ (CT operated); -40℃ ~ +70℃ (direct) |
| Storage Temperature | -40℃ ~ +70℃ |
| Protection Rating | IP51 (must be installed in suitable enclosure) |
| Dimensions | 90 mm × 72 mm × 65 mm (4 modules) |
| Mounting | 35 mm standard DIN rail |
| Terminal Torque | Direct: 3-4 N·m; CT operated: 0.5 N·m |
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FAQ
The ADL400(MID) has obtained MID certification, complying with EU Directive 2014/32/EU for measuring instruments, with M1 mechanical environment and E2 electromagnetic environment adaptability, suitable for European and international markets. The multi-tariff function supports 4 tariffs (spike, peak, flat, valley) while the standard version supports 8 tariffs. Other metering functions and accuracy remain the same.
MID certification means the product meets unified EU standards for measuring instruments and can be legally used for trade settlement, cost allocation, etc. in EU member states. The certification ensures metering accuracy, reliability, and long-term stability, providing legal protection and credibility for users.
Choose based on actual load current: Direct connection 10(80)A or 10(100)A for circuits with maximum current not exceeding 80A/100A; CT operated 1(6)A requires external current transformers, suitable for high-current circuits. Please refer to the wiring diagrams in the manual for correct connection.
4 time zones, 4 schedule tables, and 14 daily time periods can be set via keys or Modbus communication, corresponding to 4 tariffs (spike, peak, flat, valley). The meter has a built-in real-time clock and automatically switches tariffs according to settings, storing historical tariff energy data.
Yes, the ADL400(MID) supports 2nd-31st individual harmonic voltage/current measurement, Total Harmonic Distortion (THD), fundamental power, and harmonic power. Relevant data can be read via communication for power quality analysis reference.
Summary
The core advantage of ADL400(MID) lies in its MID certification, complying with EU Measuring Instruments Directive, ensuring accuracy and credibility for trade settlement. It offers high-precision measurement, harmonic analysis, multi-tariff management, and up to 48-month historical data storage, providing comprehensive data support for energy management and cost allocation. Its compact DIN-rail design and standard Modbus communication interface facilitate system integration, making it an ideal choice for refined energy management in European and international projects.
