480V Din Rail Mounted 50ms Response Rate Three-phase Unbalanced Anti-reverse Current Multi-function Energy Meter

Functions and Technical Parameter

Measurement and Metering

Supports measurement of all power parameters (voltage, current, power, frequency, etc.) with an accuracy of ±0.2%.

Bidirectional energy metering (forward/reverse active/reactive energy) is suitable for distributed energy systems such as photovoltaic energy storage.

Phase metering function can monitor three-phase imbalance issues.

Harmonic analysis and power quality

ADL400 can detect 2-31 sub-harmonics and total harmonic distortion (THD), and support fundamental and harmonic power separation.

Built-in 48 months of historical energy data storage supports query by rate (peak, flat and valley).

Communication and Scalability

The RS485 interface is compatible with Modbus-RTU/DL/T645 protocols and can be connected to energy management systems.

Supports external wireless gateways (such as the AWT100 series) for remote data transmission.

Application Scenarios:

New Energy Systems: Energy management for photovoltaic grid-connected systems, energy storage systems, and microinverter systems. Industrial and Public Facilities: Power statistics for industrial and mining enterprises, and building energy consumption monitoring.

Power Internet of Things: Real-time monitoring and data analysis through a cloud platform.

The ADL400 is a MID-certified, CT-type, DIN-rail, three-phase multi-function energy meter. Suitable for 1P2W, 3P3W, and 3P4W power grids, it measures key power parameters such as active energy, reactive energy, voltage, current, active power, reactive power, apparent power, frequency, power factor, demand energy, phase energy, and total harmonics.

The product also features an RS485 Modbus communication port, compatible with various configuration systems. This allows real-time transmission of collected data from the front end to the system data center, facilitating remote communication in a variety of scenarios. It is ideal for use in AMR/SCADA systems. It is an ideal instrument for energy monitoring and management systems and automatic meter reading systems. Its modular design offers multiple functions, high stability, high accuracy, long life, compact size, ease of installation, networking, and excellent electromagnetic compatibility.

Parameter as follow:

Function	Function description	Function
Measurement of kWh	Active kWh (positive and negative)	■
	Reactive kWh (positive and negative)	■
	A. B, C split phase positive active energy	■
Measurement of electrical parameters	U、I	■
Measurement of electrical parameters	P、Q、S、PF、F	■
Measurement of harmonics	2~31^ST Voltage and current harmonic	■
LCD Display	12 bits section LCD display, background light	■
Key programming	3 keys to communication and set parameters	■
Pulse output	Active pulse output	■
Multi-tariff and functions	Adapt 4 time zones, 2 time interval lists, 14 time interval by day and 4 tariff rates	□
	Max demand and occurrence time	□
	Frozen data on last 48 months, last 90days	□
	Date, time	□
Communication	Communication interface: RS485, Communication protocol: MODBUS-RTU	■

performance parameter
Specification			3 phase 3 wires	3 phase 4 wires
Measurement	Voltage	Reference voltage	3×100V、 3×380V	3×57.7/100V、 3×220/380V
		Voltage range	3×100V - 3×450V	3×57.7/100V - 3×260/450V
		Consumption	<10VA(Single phase)
		Impedance	>2MΩ
		Accuracy class	Error±0.2%
	Current	Input current	3×1(6)A， 3×10(80)A
		Consumption	<1VA Single phase rated current
		Accuracy class	Error±0.2%
	Power		Active, reactive, apparent power, error±0.5℅
	Frequency		45～65Hz，Error±0.2%
Mete ring	Energy		Active energy(Accuracy class: 0.5); reactive energy(Accuracy class 2)
	Clock		≤0.5s/d
Digit signal	Energy pulse output		1 active photocoupler output
pulse	Width of pulse		80±20ms
	Pulse constant		400imp/kWh,10000imp/kWh(Correspond with the basic current)
communication	Interface and communication protocol		RS485：Modbus RTU
	Range of communication address		Modbus RTU:1~ 247；
	Baud rate		1200bps~38400bps
environment	working temperature		-25℃~+55℃
	Relative humidity		≤95℅(No condensation)

The ADL400N-CT Multi-function Din Rail Meter is a smart meter designed specifically for home users, offering a variety of features and advantages. Its core features include high-precision energy measurement, a versatile data communication interface, and support for energy storage systems. This meter utilizes advanced current transformer (CT) technology to accurately record household electricity usage data through non-invasive measurement.

The ADL400N-CT features a compact, simple design, making it easy to install in a home distribution box or cabinet. It features an LCD display that displays real-time information such as current power consumption, peak power, and cumulative power consumption, allowing users to intuitively understand household electricity usage. It also supports multiple communication protocols, such as MODBUS and RS485, facilitating integration with smart home control systems or energy management platforms for remote data monitoring and management.

Function	Descriptions	ADL200N-CT	ADL400N-CT
Electric energy metering	Active energy metering (forward and reverse)	■	■
	Reactive energy metering (forward and reverse)	■	■
	Split-phase energy	□	■
Electric quantity measurement	U, I	■	■
Electric quantity measurement	P, Q, S, PF, F	■	■
LCD display	Segmented LCD display	■	■
Key programming	communication, transformation ratio and other parameters can be programmable by the key	□	■
Pulse output	Active pulse output	■	■
LED alarm	Operation instructions	□	■
Communication	RS485：Modbus RTU	■	■

Item			Performance Parameters
Model Series			ADL200N-CT	ADL400N-CT
Measurement	Grid		Single-phase	Three-phase four-wire, three-phase three-wire, single-phase three-wire
	Voltage	Rated voltage	230V	3×220/380V、3×230/400V、3×277/480V Three-phase: 3×220/380V、3×230/400V、3×277/480V
		Input Range	±20%
		Overload	1.2 times rating (continuous) 2 times the rating for 1 second
		Power consumption	<0.2VA
		Accuracy class	Error ±0.5%
	Current	Input current	80A, 120A, 200A, 300A	5A、80A, 120A, 200A, 300A, 3*5A、3×80A, 3×120A, 3×200A, 3×300A
		Overload	1.2 times rating (continuous) 2 times the rating for 1 second
		Power consumption	<0.2VA
		Accuracy class	Error ±0.5%
	Power		Active, reactive, apparent power, error ±0.5℅
	Grid frequency		45~65Hz, error ±0.5%
	Response rate		≤100ms (voltage, current, power)
			≤1s (electrical energy)
Metering	Electric energy		Active energy ：Class B (split current transformer) Reactive energy (Class 2 accuracy)
electromagnetic compatibility	Electrostatic discharge immunity class III
	Electrical fast transient burst immunity class IV
	Surge (shock) immunity Class IV
Security	Power frequency withstand voltage		Between communication and signal input, AC4kV 1min
	Insulation resistance		Input and output terminals to casing >100MΩ
Communication	Interface and communication protocol		RS485 interface and Modbus RTU protocol
	Communication address range		Modbus RTU:1~ 247；
	Baud rate		Support 1200bps-38400bps
Environment	Operating temperature		-40℃～+70℃
	Storage temperature		-40℃～+70℃
	Relative humidity		≤95% (without condensation)
	Altitude		≤3000m
IP rating	IP20