APM521 UL Multifunktionales Energiezähler

APM521 UL Multifunctional Energy Meter

The APM521 network power meter is designed according to international IEC standards and features comprehensive electrical metering, energy statistics, power quality analysis, event logging, and network communication capabilities. It is primarily used for comprehensive power quality monitoring in electrical networks. This series of meters is equipped with DI/DO and AO modules, offering a wide range of functions that enable flexible implementation of comprehensive electrical metering and switch state monitoring in electrical circuits.

Complete electrical measurement

Maximum demand (including timestamp)

Harmonic content of voltage and current (2-63 times)

24-hour frozen electrical energy, 31-day frozen electrical energy, December frozen electrical energy, regular-time frozen electrical energy

Event logging: 128 alarm records

Modbus - RTU protocol, DL/T 645-2007 statute

4DI, 2DO, 2MO

Expand the second RS485 communication channel

Extend Ethernet communication with the MODBUS TCP protocol and FTP protocol.

UL certification

Technical data

Item			Performance parameters
Measurement signal	Tension	nominal voltage(UL, CE)	66VAC LN 115VAC LL
			230VAC LN 400VAC LL
			277VAC LN 480VAC LL
			400VAC LN 690VAC LL
		Nominal voltage (CPA)	Three-phase three-wire	Three-phase four-wire
			3P3L	3P4L
			3x100V	3x57.7/100V
			3x380V	3x220/380V
			3x690V	3x400/690V
		overload	1.2 times nominal value (continuous)
			Twice the nominal value for 1 second
		Performance loss	<1VA
		Accuracy class	error ±0.2%
	Electricity	Rated current (UL, CE)	1A, 5A
		Rated current (CPA)	0.015-0.075(6)A
			3x1(6)A
		overload	1.2 times nominal value (continuous)
			10 times the nominal value for 1 second
		Performance loss	<0.2VA
		Accuracy class	Error ± 0.2%
	Performance		Active power, reaction power, apparent power, error ±0.2%
	Power grid frequency		UL, CE	50Hz/60Hz, with an error limit of ±0.2%
			CPA	50Hz/, with an error margin of ±0.2%
	Response rate		≤200ms
			≤1s
	measurement category		66ULN(＋20%) 115ULL(＋20%) CATⅢ
			230ULN(＋20%) 400ULL(＋20%) CATⅢ
			277ULN(＋20%) 480ULL(＋20%) CATⅢ
			400ULN(＋20%) 690ULL(＋20%) CATⅡ
	Electrical energy		Active energy: Class D (0.2S)
			Reactive energy (accuracy class 2)
Relief supplies	AC/DC 85-300V
	Power consumption ≤ 4W, 10VA
Electromagnetic Compatibility (EMC)	Electrostatic discharge immunity level IV
	Electrical immunity level IV
	Immunity class IV
Security deposit	Power frequency, resistance, voltage		Communication and signal input interface: AC4kV, 1 min
	Insulation resistance		Input/output terminals to housing > 500MΩ
Communication	Communication interface & communication protocol		RS485 port, Modbus RTU protocol
	Communication address range		Modbus RTU: 1 ～ 247
	Baud Rate		Supports 1200bps-38400bps
Environment	operating temperatur		-40℃～+70℃
	Storage temperature		-40℃～+80℃
	Relative humidity		≤95%
	Height		≤2000m
			≥2000m, ≤5000m (only for AC/DC 85-265V power supply, voltage 277/480V or below)
	installation environment		Indoor (dry)
	Protection rating		IP54 (front), IP30 (rear)
	degree of contamination		Class 2
	Overvoltage category		OVC III
Reference standard	UL		CAN/CSA C22.2 NO.61010-1-12
			UL 61010-1
			CSA C22.2 No. 61010-2-030
			UL 61010-2-030
	IEC, CE		IEC 61010-1
			IEC EN 61010-2-30
	CPA		GB/T17215.321-2021
			GB/T17215.323-2022