ME531 Three-phase Power Meter

ME531 Three-phase Power Meter

Feature

Specification
Model	ME531
Product component type	Multifunction power meter
Poles description	3PH4W 3PH3W 1PH2W (L-N); 1PH2W(L-L);1PH3W(L-L-N)
Device application	Power analysis Energy meter
Input type	External CT(333mV only) And External Rogowski coil
Display	None Display
Sampling rate	8k samples per second
Mounting mode	DIN RAIL
Harmonic	52th Max
Mechanical characteristics
Weight		125g
Dimension		LWD:1228723mm

Instantaneous rms Values
Voltage	U，UTH2，UTH3，UTH4(Per Phase,AVG）
Current	I,ITHD2，ITHD3，ITHD4(Per Phase,AVG）
Power	P,FQ,S,PF(Per Phase,SUM）
Energy	EP,EFQ,ES,Freq(Per Phase,SUM） over 999.9MWh,value reset
UTHD(%)	UTHD,THD2,THD3,THD4(Per Phase,AVG）
ITHD(%)	ITHD,THD2,THD3,THD4(Per Phase,AVG）
Line voltage	Uab,Ubc,Uac(only enable in 3PH4W)
Voltage angle	Uab,Ubc,Uac
Current angle	Iab,Ibc,Iac
DPF	DPFa,DPFb,DPFc,AVG
Update rate
Data acquisition rate	400ms
Display update rate	0.5s
Calibration
Current	Per phase,all
Voltage	Per phase,all
Power factor	Per phase,all
Energy	Reset to “0” EP,EQ,ES all phase

MODBUS RS485

Communication
Transmission mode	RS485 port,Half duplex
RS485 link	3 wires
Communication protocol	MODBUS RTU
Settings
Communication address	1 to 247 (default 1)
Baud rate(communication speed)	1200 to 57600 baud (default 9600)
Parity	Even(default),Old,None
Data bit	8
Stop bit	1

Video

Environmental conditions
Operating temperature		-25℃ to +55℃
Storage temperature		-40℃ to +85℃
Humidity rating		5 to 95% RH at 50℃(non-condensing)
Pullution degree		2
Overvoltage category		III,for distribution systems up to 277/480VAC
Dielectric withstand		As per IEC61010-1, Doubled insulated front panel display
Altitude		3000m Max
IP degree of protection	IP20 conforming to IEC 60629
Colour	White
Contractual warranty	12months
EMC
Electrostatic discharge		Level IV(IEC61000-4-2)
Immunity to radiated fields		Level III (IEC61000-4-3)
Immunity to fast transients		Level IV (IEC61000-4-4)
Immunity to surge		Level IV (IEC61000-4-5)
Conducted immunity		Level III (IEC61000-4-6)
Immunity to power frequency magnetic fields		0.5mT (IEC61000-4-8)
Conducted and radiated emissions		Class B (EN55022 )
Standard compliance
EN 62052-11,EN61557-12,EN 62053-21,EN 62053-22,EN 62053-23,EN 50470-1,EN 50470-3, EN 61010-1,EN 61010-2,EN 61010-031

Measurement accuracy
Current	0.5% from 1% to 120%(don’t ensure accuracy when<10A)
Rated current	5 rated current selectable: 100A（50mv/kA）(0.5% from 10A to 120A) 600A（50mv/kA）(0.5% from 6A to 720A) 1000A（85mv/kA）(0.5% from 10A to 1200A) 3000A（85mv/kA）(0.5% from 30A to 3600A) 6000A（50mv/kA）(0.5% from 60A to 7200A)
Rogwoski coil specification	50mV/kA@50Hz±0.5% 85mV/kA@50Hz±0.5%
Voltage	0.2% from 100V to 500V
Power factor	±0.005 from 10% to 120%
Active/Apparent Power	IEC62053-22 Class 0.5
Reactive power	IEC62053-21 Class 2
Frequency	0.01% from 45 to 65Hz
Active energy	IEC62053-22 Class 0.5s
Reactive energy	IEC62053-21 Class 2

Measurement arrange
Measured voltage	80V to 400V AC(or 100 to 500V)
Frequency range	50/60Hz
Input-current characteristics
Primary current range	Adjustable from 0.1A to 9999A
Measurement input range	1/2²⁵mV-333mV
Permissible overload	600mV for 10s/hours
Control Power
AC/DC	85 to 265V AC/DC, 3.5W
Output
Relay	1×digital output(2 ports) from 1pcs relay,rated 24V/800mA, 75mΩmax, 2.5kVrms insulation(controlled by Modbus) Maximum Switching Power ： 0.5A, 125VAC 1A, 30VDC
Opticalcoupler	Max voltage :80VDC;Max current 50mA Recommend Current :10mA
Wire diameter for terminals
Connections-terminals	Screw terminals 2.5mm²,interval 5.08mm
Alarm
Setting	U and I Each phase,AVG
Output form	Relay

2018 CATALOGUE