ME237 Three-phase multifunctional smart meter

ME237 Three-phase multifunctional smart meter - Hình ảnh 3

ME237 Three-phase multifunctional smart meter - Hình ảnh 4

ME237 Three-phase multifunctional smart meter - Hình ảnh 5

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ME237 Three-phase multifunctional smart meter

ME237 Three-phase multifunctional smart meter supports direct current input or external open-ended Rogowski coil or voltage type CT, which can realize wire free test, simplify test steps and save construction cost. ME237 supports three-phase three wire and three-phase four wire system; it can measure current, voltage, power factor, harmonic, power, energy and other electrical parameters of A, B, C phase network. The standard RS485 communication interface can be compatible with various configuration systems through the standard Modbus RTU protocol. The electrical parameters collected by the front end can be transmitted to the system data center in real time.

Description
Type	96*96 Panel Meter
Poles description	3PH3W ,3PH4W.
Application	Current,Voltage,Power,Energy and harmonic measurement
display screen	3.8 inch LCD segment code display screen.
Weight	259g
Dimension	LWD：8.18.13CM
Color	White and black
Model	ME237C	ME237V	ME237R
Current sensor type	1/5A CT	333mV CT	Rogowski coil
Advantage	Traditional electric meter	Support to voltage output sensor and Current clamp	Support to Rogowski coil directly connect without amplifier(Integrator)
Current
Model	ME237C	ME237V	ME237R
Primary Rated current	5A to 6kA	5A 100A 200A 500A (Accept OEM)	600A	2500A	6000A
Secondary Rated input	5A	333mV	50mV/kA	85mV/kA	50mV/kA
Input channel maximum value	7.5A	500mV	500mV	500mV	500mV
Current measurement Range	0.005~5A	0.005~500mV	2A to 600A	2.5A to 2500A	6A to 6000A
Recommended Sensor model	ACT ASCT	SCT-10(10mm 5A/333mV) SCT-16(16mm 100A/333mV) SCT-24(24mm 200A/333mV) SCT-36(36mm 500A/333mV)	MRC-36	NRC-150	NRC-200
Photo
Voltage
Range	0~600VAC Phase to Phase Voltage
Maximum range	720VAC Phase to Phase Voltage
Digital Signal
Energy pulse output	Active energy pulse output, optocoupler isolation (5kvrms)
Relay output	One way electromagnetic relay output, including normally open and normally closed contacts, contact capacity: 3A 30V DC, 3A 250V AC
Digital input	2-way dry contact input, optocoupler isolation (5kvrms)
Communication
RS485 communication	One way RS485 communication interface Interface type: two wire half duplex Communication baudrate: 2400bps ~ 19200bps Protocol: Modbus RTU
Power supply
Power Supply	95~265VAC/110~260VDC, 45~60Hz
Maximum power consumption	3.5VA

Measuring data
Phase Voltage	U1, U2, U3 and average value.
Line Voltage	U12, U23, U31 and average value.
Current	I1, I2, I3 and average value.
Power	Active power,Reactive power,Apparent power (total and per phase).
Energy	Active energy import,active energy export, reactive energy import, reactive energy export.apparent energy. If it exceeds 9999999.9kwh, the energy value will be reset to “0” automatically.
Harmonic	The total harmonics of each phase of voltage and current.
Power Factor	Including power factor PF and fundamental power factor DPF (average value of each phase and three phases)
Grid Frequency	Synthetic frequency
Update rate
Data refresh rate	500ms
Harmonic
Voltage	Total harmonic phase
Current	Total harmonic phase
Max / min
Voltage	Per phase
Current	Per phase
Power	Active power,Reactive power,Apparent power (sum of all phases and three phases)
Unbalance degree
Voltage	Per phase
Current	Per phase
Demand / maximum demand
Current	Per phase
Power	Active power, Reactive power, Apparent power (sum of all phases and three phases)

Measuring accuracy
Model	ME237C	ME237V	ME237R
Current measurement	±0.3%RDG	±0.5%RDG	±0.5%RDG
Guarantee range of current measurement accuracy	0.5% FS～100%FS	1% FS～100%FS	2% FS～100%FS
Voltage measurement accuracy	0.2%(30～600V AC)
Grid frequency	0.01%(45～65Hz)
Power factor	±0.005
Active and apparent power	IEC62053-22 level 0.5S
Reactive power	IEC62053-21 level 2S
Active energy	IEC62053-22 level 0.5S
Reactive energy	IEC62053-21 level 2S
Environment condition
Operating temperature	-25℃～+60℃
Storage temperature	-40℃～+85℃
Humidity range	5～95% RH, 50℃(non-condensing)
Class of pollution	2
Over voltage capability	CAT III 1000V, It is suitable for distribution system below 277 / 480VAC
Insulation strength	IEC61010-1
Altitude	3000m Max
Antipollution level	IP20（Meet the standard of IEC 60629）
Quality guarantee period	12 months
EMC（electromagnetic compatibility）
Electrostatic discharge	Level CAT IV 600V (IEC61000-4-2)
Radiated immunity	Level CAT III 1000V (IEC61000-4-3)
EFT Electrical fast burst immunity	Level CAT IV 600V (IEC61000-4-4)
Surge immunity	Level CAT IV 600V (IEC61000-4-5)
Conducted disturbance immunity	Level CAT III 1000V (IEC61000-4-6)
Power frequency magnetic field immunity	0.5mT (IEC61000-4-8)
Conduction and radiation	Class B (EN55022 )
Measurement standard
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

Point number	Point type	Point name	Point function	Remarks
1	Relay output	R1	Relay normally open contact	One relay output with normally open and normally closed contacts
2		R0	Relay common contact
3		R2	Relay normally closed contact
4	Pulse output	POA	Positive end of pulse output	Active power pulse output
5		N/C	N/A
6		POB	Pulse output negative terminal
7	Relay output	DI2	Digital input channel 2	One relay output with normally open and normally closed contacts
8		DIC	Digital channel common terminal
9		DI1	Digital input channel 1
10	RS485	GND	RS485 communication GND	RS485 communication
11		B	RS485 communication B
12		A	RS485 communication A
13	Power supply	N	Power supply（-）	Range 95~265VAC/110~260VDC, 45~60Hz
14		N/C	N/A
15		L	Power supply（+）
16	Voltage input	N	N-phase voltage input	Measurement voltage input channel
17		N/C	N/A
18		V3	Phase C voltage input
19		N/C	N/A
20		V2	Phase B voltage input
21		N/C	N/A
22		V1	Phase A voltage input
23	Current input	N/C	N/A	ME237C/ME237V/ME237R Current channel interface.
24		N/C	N/A
25		I3-	Phase C current input negative
26		I3+	Phase C current input positive
27		I2-	Phase B current input negative
28		I2+	Phase B current input positive
29		I1-	Phase A current input negative
30		I1+	Phase A current input positive
31		RJ45	A B C three phase current input


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