ME337 Three-Phase Multifunction Smart Meter
Application
Power analysis, energy measurement
Features
◼ Fast installation
Product size is standard 96 panel type
Installation method is a snap on type, without screws
◼ Support multiple current transformer connections
The ME337N series supports a new type of current transformer – Rogowski coil direct connection, without need of external integrator
The ME337N series supports voltage output type current transformer connection simultaneously
The ME337C series supports direct current connection, with a maximum connection current of 7A
◼ Support multiple power grid systems
Supports three-phase four wire, three-phase three wire, one phase three phase, and single phase systems
◼ Multiple power supply options available
Available in 220VAC, 24VDC and 12VDC power supplies
◼ Support voltage and current harmonic measurement
Supports voltage, current, fractional harmonics, up to 50 measurements
Support voltage and current harmonic distortion and harmonic value measurement
Support voltage and current total harmonic distortion measurement
◼ More features
Support 6 rate tariff energy, support RTC switching or manual switching
Support demand measurement
Support alarm setting
Support current transformer orientation modification
Support current channel modification
Specifications
Type: Panel type
Model ME337N Current sensor type: Rogowski coil, voltage output type CT: Characteristic: Support direct access to Rogowski
coils.
Characteristic: Suitable for wide current range, without disassembling wires for measurement
Model: ME337C Current sensor type: Current type transformer : Characteristic: Direct current connection
Wire system: 3P4W 4CT,3P4W 3CT,3P3W 3CT,3P3W 2CT,1P3W,1P2W
Display screen: LCD display
Size: L*W*D:96*96 *45mm
Current Measurement
Channel input range: ME337N: 0-900mVAC peak,636mV RMS
Channel input range: ME337C : 0-7A A
Measuring range: Rogowski coils:
50mV/kA@50Hz(0-12000A),@60Hz(0-10000A)
85mV/kA@50Hz(0-7000A),@60Hz(0-6000A)
100mV/kA@50Hz(0-6000A),@60Hz(0-5000A)...
Voltage output type CT: Varies with instrument transformer parameters (ME337C: 0-7A AC)
Voltage Measurement
Measuring range: 0~600VAC Phase voltage
Maximum measurement: 720VAC Phase voltage
Digital Signal
Relay output: 1 electromagnetic relay output, contact capacity: 3A 30V DC, 3A 250V AC
Digital input: 2 dry contact inputs, optocoupler isolated (5kVrms)
Comumication
RS485: One RS485 communication interface, interface type: two-wire half-duplex Communication rate: 2400bps~115200bps. Specification: Modbus-RTU
Power supply
Power ME337XX2: 95~265VAC/110~370VDC,45~60Hz
Power: ME337XX3: 18-36VDC
Power: ME337XX4: 9-18VDC
Maximum power consumption: 3.5VA
Accuracy and Certification
current measurement accuracy: 0.1%+Accuracy of current sensor
Voltage measurement accuracy: ± 0.2%(60V~600V AC)
Environment Condition
Operating temperature: -20℃～+70℃
Storage temperature: -40℃～+85℃
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