Wholesale Ethernet Communication High Accuracy Class 0.2S Panel Mounted Energy Meter Company, Suppliers

Acrel APM520 network power meter delivers exceptional precision and versatility for modern power grid monitoring. Featuring IEC 62053-22 0.2S class accuracy (with S option) in a compact 96×96mm panel design, it provides billing-grade energy measurement alongside comprehensive power quality analysis. The unit monitors harmonics through the 63rd order, interharmonics, and voltage flicker, while its integrated fault recorder automatically captures voltage sags, swells, interruptions, and inrush currents for advanced diagnostics.

Communication flexibility is a core strength, offering optional Ethernet Modbus-TCP, 4G, WiFi, LoRa, and NB-IoT modules in addition to standard RS485 and DL/T645-2007 protocols. The base configuration includes four digital inputs and two relay outputs, with expansion capabilities for analog outputs, temperature sensing, and leakage current monitoring. With IEC 61000 EMC compliance and robust event logging (128 alarm and switch records), the APM520 serves as a powerful, all-in-one solution for industrial and commercial energy management applications requiring high accuracy and extensive analytical capabilities.

Display	Display method			Dot matrix liquid crystal; Switch between Chinese and English
	Resolution			128*128；
	Backlight			White LED;
	Visible area			72 Shape: 38mm*46mm (1.78"/2.3");
				96 Shape: 56mm*60mm (2.46"/3.2");
Signal	Electrical network			Three-phase three-wire, three-phase four-wire, see the wiring diagram;
	Frequency			45～65Hz；
	Voltage			Rating: AC 357.7/100V, AC 363.5/110V, AC 3230/400V, AC 3400/690V (96 Shape only);
				Overload: 1.2 times the rating (continuous); 2x rating/1 second;
				Power consumption: < 0.5VA(Every way)；
	Current			Ratings: AC 3x 1 (1.2) A, AC 3x5(6)A;
				Overload: 1.2 times the rating (continuous); 10x rating/1 second;
				Power consumption: < 0.5VA(Every way)；
Measurement accuracy	Voltage, current			IEC 61557-12 0.2%
	Voltage harmonics, current harmonics			IEC 61557-12 1%
	Frequency			IEC 61557-12 ±0.02Hz
	Active power			IEC 61557-12 0.5%
	Reactive power			IEC 61557-12 1%
	Active electrical energy			0.5S class GB/T 17215.321-2008
				C class GB/T 17215.321-2021
				(0.2S accuracy when S is selected)
				0.2S class GB/T 17215.321-2008
				D class GB/T 17215.321-2021
	Reactive power			IEC 62053-24 Class 1
Power quality (only available when S is selected).	Waves recording			20 waveforms, 10 waves before and after;
	Waveform capture			128 cycle points are stored per waveform;
Switch input	Dry contact input, built-in power supply;
	Response time: less than 300ms
Relay output	Contact type: normally open contact;
	Contact capacity: AC 250V/3A DC 30V/3A;
Energy pulse output	Output mode: photocoupler pulse with open collector;
	Pulse constant: 10000imp/kWh (default);
communication	RS485 interface/Modbus-RTU protocol and DLT645 protocol;
	RJ45 interface (Ethernet)/Modbus-TCP protocol;
	Wireless interface
power supply	Working range: AC 85V~265V; DC100V～350V
	Power consumption: power consumption≤15VA;
Safety	Power frequency withstand voltage	The power frequency withstand voltage between the housing and the auxiliary power supply, each input and output terminal group is AC 4kV/1min;
		The power frequency withstand voltage between the auxiliary power supply and each input terminal and each output terminal group is AC 2kV/1min;
		The power frequency withstand voltage between the voltage input and other input and output terminal blocks is AC 2kV/1min;
		The power frequency withstand voltage between the current input and other input and output terminal blocks is AC 2kV/1min;
		The power frequency withstand voltage between the relay output and other input and output terminal blocks is AC 2kV/1min;
		The power frequency withstand voltage between the terminal groups of switching input, communication, analog output and pulse output is AC 1kV/1min;
	Insulation resistance	Inputs、outputs to the shell>100MΩ；
Electromagnetic compatibility	Complies with IEC 61000 standard (Level 4);
Environment	Operating temperature：-25℃～+70℃；Storage temperature：-40℃～+85℃；
	Relative humidity：≤95% without condensation；Altitude：≤2500m；
Protection Level	Display panel IP54; (Optionally IP65).
Standards	IEC 60068-2-1		Environmental Testing-Part 2-1:Tests Test A:Cold IDA
	IEC 60068-2-2		Environmental Testing Part 2-2:Tests Test B:Dry heat
	IEC 60068-2-30		Environmental Testing Part 2-30:Tests Test Db:Damp heat，cyclic (12+12h)
	IEC 61000-4		Electromagnetic compatibility-Testing and measurement techniques
	IEC 61557-12		Electrical safety in low voltage distribution systems up to 1 000V a.c. and 1 500V d.c –Equipment for testing， measuring or monitoring of protective measures — Part12：Performances measuring and monitoring devices(PMD)
	IEC 62053-22		Electricity metering equipment (a.c.)-Particular requirements - Part22:Static meter for active energy(class 0.2S and 0.5S)
	IEC 62053-24		Electricity metering equipment (a.c.)-Particular requirements - Part24:Static meter for reactive energy at fundamental frequency (classes 0.5S 1S and 1)