Overview
ADL200N is a single-phase DIN-rail energy meter with external split-core CTs.
It measures voltage, current, power, and bi-directional energy with Class B accuracy and 50ms fast response.
Ideal for residential PV, small ESS, and load monitoring.
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Multi-Model Options
- 1Φ CT: 80A, 120A, 200A, 300A
- Single-phase only
- DIN-rail 1-module
- External split-core CTs
Fast Response
- 50ms data refresh
- High-speed registers
- Real-time monitoring
- Anti-backfeed control
High Accuracy
- Class B active energy
- ±0.5% V, I accuracy
- Bi-directional metering
- 45-65Hz frequency
Standard Outputs
- RS485 Modbus RTU
- Pulse output LED
- 1-247 address
- 1200-38400 baud
Function
| Measurement | Metering | Extended Functions |
| Voltage (U) | Total Active Energy | RS485 Communication with Modbus-RTU |
| Current (I) | Forward Active Energy | Field-Programmable Parameters (CT Ratio, Comm. Address, etc.) |
| Active Power (P) | Reverse Active Energy | Active Pulse Output (LED Indication) |
| Reactive Power (Q) | Forward Reactive Energy | High/Low-Speed Dual Register Sets for Optimized Data Reading |
| Apparent Power (S) | Reverse Reactive Energy | Password Protection Against Unauthorized Changes |
| Power Factor (PF) | — | Backlight Control |
| Frequency (F) | — | — |
Specification
| Item | Parameter |
| Model Series | ADL200N-CT (Single-Phase) |
| Voltage Rating | 230V (with ±20% range) |
| Voltage Range | 184V ~ 276V |
| Current Ratings | External CT Operated: Primary 80A, 120A, 200A, 300A (determined by ordered CTs) |
| Auxiliary Power | Self-powered from measured line, < 0.2VA |
| Active Energy Accuracy | Class B (per GB/T 17215.321) |
| Reactive Energy Accuracy | Class 2 |
| Response Speed | 50ms (for voltage, current, power via fast registers) |
| Pulse Output | Active optocoupler output, default pulse constant: 600 imp/kWh |
| Communication | RS485 with Modbus-RTU protocol |
| Comm. Parameters | Address 1~247, baud rate 1200~38400bps programmable |
| Display | Segmented LCD, programmable via buttons |
| Operating Temperature | -25℃ ~ +55℃ |
| Storage Temperature | -40℃ ~ +70℃ |
| Relative Humidity | ≤95% (non-condensing) |
| Dimensions | Meter: approx. 18mm × 90mm × 65mm (1 module); CTs: varies by specification |
| Mounting | Meter: 35mm standard DIN rail; CTs: Clamped onto primary cables |
| Protection Grade | IP20 (Meter body) |
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FAQ
The main difference lies in the number of phases and function complexity.
ADL200N-CT: Single-phase meter, suitable for homes, shops, and other single-phase supply scenarios. Focuses on high-precision metering and fast response for single-phase circuits, with a smaller size (1 module).
ADL400N-CT: Three-phase meter, suitable for industrial parks, commercial buildings, PV plants, and other three-phase supply scenarios. Supports configurable 3-phase 4-wire / 3-phase 3-wire.
Selection Guide: Choose based on your power supply system type. Choose ADL200N-CT for single-phase systems, and ADL400N-CT for three-phase systems.
Yes, they are fully interchangeable. Both products use the exact same CT series (80A/26.7mA, 120A/40mA, 200A/66.67mA, 300A/100mA). This means if you use both single-phase and three-phase meters in a project, you can standardize CT spare parts and reduce inventory variety.
The manual (pages 12-13) provides detailed steps:
In the display interface, press and hold the ▲ button for >3 seconds to enter the password screen “PASS0000”.
Briefly press ▼ to increase value, press and hold ▲ to shift cursor, enter the default password 0001.
Press and hold ▲ for >3 seconds to confirm password, enter address modification screen “addr x”.
Briefly press ▼ to modify value, press and hold ▲ to shift cursor.
After modification, press and hold ▲ for >3 seconds to enter “SAVE YES”, then press and hold ▲ again to save and exit.
The ADL200N-CT is designed for single-phase applications with simplicity in mind. If negative power is displayed (indicating reverse current direction), the simplest solution is to swap the two leads of the CT secondary side at the meter terminals. If remote direction identification is needed, you can determine energy flow by reading the forward/reverse energy registers.
Summary
ADL200N combines 50ms fast response, external CT flexibility, and Class B accuracy in a 1-module design. It enables reliable anti-backfeed control and real-time monitoring for residential energy systems.
