Me440 Best Selling Economical Digital Multimeter with 4G TFT Display
China Me440 Best Selling Economical Digital Multimeter with 4G TFT Display, Find details about China Handheld Digital Power Quality Analyzer, Handheld Power Quality Analyzer from Me440 Best Selling Economical Digital Multimeter with 4G TFT Display
Basic Info.
Model NO.
ME440/NRC-200
Theory
Electronic Meter
Power Meter Connection
Terminal
Measured Signal
Continuous Wave
Type
Energy Meter
Certification
RoHS, ISO, CE
Customized
Customized
Support Extra Sensor
333mv CT/ 320mv Current Clamp/ Rogowski Coil
Storage
16GB Memory,USB Disk Download
Power 1
2*18650 Lithium Battery
Power 2
5V DC Power Supply(Included Adaptor)
Poles Description
3pH4w 3pH3w 1pH2w (L-N); 1pH2w(L-L);1pH3w(L-L-N)
Sampling Rate
8K Samples Per Second
Harmonic
51th in The Mean Time
Frequency
45...65 Hz
Rated Current (3 Level Selectable)
600A 3000A 6000A
Voltage
0.2% From 5 to 600V
Power Factor
±0.005
Communication Protocol
Modbus TCP
Current Input
BNC Connector
BNC Connector
Banana Plug
DC Power Supply
DC 5.5*2.1 Plug
Trademark
MEATROL
Transport Package
Carton
Specification
850g (with Accessory 2kgs)
Origin
China
HS Code
9030331000
Model NO.
ME440/NRC-200
Theory
Electronic Meter
Power Meter Connection
Terminal
Measured Signal
Continuous Wave
Type
Energy Meter
Certification
RoHS, ISO, CE
Customized
Customized
Support Extra Sensor
333mv CT/ 320mv Current Clamp/ Rogowski Coil
Storage
16GB Memory,USB Disk Download
Power 1
2*18650 Lithium Battery
Power 2
5V DC Power Supply(Included Adaptor)
Poles Description
3pH4w 3pH3w 1pH2w (L-N); 1pH2w(L-L);1pH3w(L-L-N)
Sampling Rate
8K Samples Per Second
Harmonic
51th in The Mean Time
Frequency
45...65 Hz
Rated Current (3 Level Selectable)
600A 3000A 6000A
Voltage
0.2% From 5 to 600V
Power Factor
±0.005
Communication Protocol
Modbus TCP
Current Input
BNC Connector
BNC Connector
Banana Plug
DC Power Supply
DC 5.5*2.1 Plug
Trademark
MEATROL
Transport Package
Carton
Specification
850g (with Accessory 2kgs)
Origin
China
HS Code
9030331000
Product Desciption
| Connector advantages | |
| Model | ME440 |
| Support Extra sensor | 4pcs BNC terminal 333mV CT 4pcs BNC terminal 320mV current clamp 4pcs BNC terminal Rogowski coil |
| Storage | 16GB Memory,USB DISK download (save intervals 1mins default) |
| Power | 2*18650 lithium battery(wroking time: approx 10 hours) Or 5V DC power supply(included adaptor) |
| Specification | |
| Model | ME440 |
| Product component type | Handheld;poly-phase;data logger;power analyzer |
| Poles description | 3PH4W 3PH3W 1PH2W (L-N); 1PH2W(L-L);1PH3W(L-L-N) |
| Device application | Power analysis Data log |
| Input type | External Rogowski coil External CT(333mV only) |
| Display | 3.5 inch TFT screen display |
| Sampling rate | 8k samples per second |
| Harmonic | 51th in the mean time |
| Mechanical characteristics | |
| Weight | 850g (with Accessory 2kgs) |
| Dimension | L*W*D:21.5*13*6CM |
The power meter measures currents and voltages and reports real-time RMS values for all 3-phases and neutral. In addition, the power meter calculates power factor, realpower, reactive power, and more.
The following sections list the metering characteristics of the power meter.
Real-Time Measuring
The following table lists the metering characteristics of the power meter for the real-time
measurement:
| Characteristics | Description |
| Current | Per phase, neutral, and average of 3 phases |
| Voltage | L-L, L-N, and average of 3 phases,N-PE |
| Frequency | 45...65 Hz |
| Active power | Total and per phase (signed) |
| Reactive power | Total and per phase (signed) |
| Apparent power | Total and per phase(signed) |
| Power factor (True) | Total and per phase 0.000 to 1 (signed) |
| Angle | Voltage angle,Current angle |
| Current unbalance | Per phase, most unbalanced of 3 phases |
| Voltage unbalance | most unbalanced of 3 phases |
Minimum/Maximum Values
When any one-second real-time reading reaches its highest or lowest value, the power meter saves the minimum and maximum values in its nonvolatile memory.
From the power meter display, you can:
• view all min./max. values since the last reset and the reset date and time.
• reset min./max. values.
All running min./max. values are arithmetic minimum and maximum values. For example, the minimum phase A-N voltage is the lowest value in the range from 0 to 999.9GV that has occurred since last reset of the min./max. values.
The power meter provides time stamping for all minimum/maximum values.
The following table lists the minimum and maximum values stored in the power meter:
| Characteristics | Description |
| Current | Per phase and average |
| Voltage | per phase and average |
| Active power | Per phase and total |
| Reactive power | Per phase and total |
| Apparent power | Per phase and total |
Demand Readings
The power meter provides the following demand readings.
| Characteristics | Description |
| Current | Per phase and average |
| Active, reactive, apparent power | Per phase and Total |
| Peak Demand Values | |
| Current | Per phase and average |
| Active, reactive, apparent power | Per phase and Total |
Power demand is the energy accumulated during a specified period divided by the length of the period. Current demand is calculated using arithmetical integration of the current RMS values during a time period, divided by the length of the period. How the power meter performs this calculation depends on the selected method. To be compatible with electric utility billing practices, the power meter provides block interval power/current demand calculations.
For block interval demand calculations, you select a block of time (interval) that the power meter uses for the demand calculation and the mode the meter uses to handle he interval. 2 different modes are possible:
• Fixed block - Select an interval from 1 to 60 minutes (in 1 minute increments). The
power meter calculates and updates the demand at the end of each interval.
• Sliding block - Select an interval from 1 to 60 minutes (in 1 minute increments). For demand intervals less than 15 minutes, the value is updated every 15 seconds. For demand intervals of 15 minutes and greater, the demand value is updated every 60 seconds. The power meter displays the demand value for the last completed interval.
The following figures illustrate the 2 ways to calculate demand power using the block
method. For illustration purposes, the interval is set to 15 minutes.
Peak Demand
In nonvolatile memory, the power meter maintains a maximum operating demand value called peak demand. The peak is the highest value (absolute value) for each of these readings since the last reset.
You can reset peak demand values from the power meter display. You should reset peak demand after changes to basic power meter setup such as power system configuration.
Energy Readings
The power meter calculates and stores Per phase and total energy values for active,reactive, and apparent energy.
You can view energy values from the display. The resolution of the energy value automatically changes from kWh to MWh to GWh (kVAh to MVARh to GWh).
The energy values automatically resets to 0 when it reaches the limit of 999.9GWh,
999.9GVAh, or 999.9GVARh.
The following table lists the energy readings from the power meter:
| Characteristics | Description |
| Energy values | |
| Active energy | 0 to 999.9GWh Auto reset to 0 in case of over limit |
| Reactive energy | 0 to 999.9GVARh Auto reset to 0 in case of over limit |
| Apparent energy | 0 to 999.9GVAh Auto reset to 0 in case of over limit |
Power Quality Analysis Values
The power quality analysis values use the following abbreviations:
• Fundamental phase current rms: I1
• Fundamental phase voltage rms: V1
• RMS of up to three harmonics of phase current:
Ix, Iy, Iz, x, y, z = 2, 3,…, N
• RMS of up to three harmonics of phase voltage:
Vx, Vy, Vz, x, y, z = 2, 3,…, N
•Total harmonic distortion of the phase current
• Total harmonic distortion of the phase voltage
• Harmonic distortion of up to three harmonics on the phase
current
• Harmonic distortion of up to three harmonics on the phase
voltage:
THD provides a measure of the total distortion present in a waveform. THD is the ratio of harmonic content to the fundamental and provides a general indication of the quality of a waveform. THD is calculated for both voltage and current.
The following table lists the power quality values of the power meter:
| Characteristics | Description |
| THD | Total,2,3,4,5,,,,,51(51 times) Per phase current (percentage value) X,Y,Z,A,B(5 times each time) Per phase current(rms value) Total,2,3,4,5,,,51(51 times)Per phase voltage(percentage value) X,Y,Z,A,B(5 times each time)Per phase voltage(rms value) |
Data Record
The power meter records data to SD card, the following table lists data record of the power meter.
| Record | ||
| Record interval | 1s to 9999s(default 1min) | |
| Record format | csv | |
| Record capacity | 16GB Memory | |
| Store about 2.5K Bytes data each time | ||
| record 12 years (1min interval) | ||
| Record data | "Current Harmonic"file | ITHD(%),IHD2(%),IHD3(%),,,,,IHD51(%) (Each phase ) |
| "Voltage Harmonic"file | UTHD(%),UHD2(%),UHD3(%),,,,,UHD51(%)(Each phase) | |
| "DataSheet" file | Voltage(V);UTHD(%);Current(A);ITHD(%); Frequency(Hz);Power Factor; Current Demand(A); Current Peak Demand(A)&Date; (Each phase and Average) | |
| Active Power(W) ;Reactive Power(Var);Apparent Power(Va) Active Energy(Wh);Reactive Energy(Varh);Apparent Energy(Vah) (Each phase and Summary) | ||
| Total Active Power Deamnd(W) Total Active Power Peak Deamnd(W)&Date Total Reactive Power Deamnd(Var) Total Reactive Power Peak Deamnd(Var)&Date Total Apparent Power Deamnd(Va) Total Apparent Power Peak Deamnd(Va)&Date | ||
Other Characteristics
The following table lists other characteristics of the power meter:
| Characteristics | Description |
| Reset | |
| Minimum and maximum values | - |
| Peak demand values | - |
| Current demand calculation method | 1 to 60 minutes |
| Power demand calculation method | 1 to 60 minutes |
| Environmental conditions | ||
| Operating temperature | -25ºC to +55ºC | |
| Storage temperature | -40ºC to +85ºC | |
| Humidity rating | 5 to 95% RH at 50ºC(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 | ||
Specification
| Measurement accuracy | ||
| Rated current (3 level selectable) | 600A(0.5% from 6A to 720A) 3000A(0.5% from 10A to 3600A) 6000A(0.5% from 20A to 7200A) | |
| Rogwoski coil connect setting | 600A | TRC-36 |
| 3000A | NRC-150 or Y-FCT-510 | |
| 6000A | NRC-200 or Y-FCT-800 | |
| ST08 current clamp | 5A | 0.5% (100mA~5A) 1%(10mA~100mA) |
| 10A | 0.5% (100mA~10A) 1%(10mA~100mA) | |
| CTs connect setting | Primary setting: | from 1A to 999999A |
| Secondary setting: | from 0.001mV to 707mV | |
| Voltage | 0.2% from 5 to 600V | |
| Power factor | ±0.005 | |
| 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 | |
| Input-current characteristics | ||
| Primary current range | 600A 0.5A to 720A 3kA 0.5A to 3600A 6kA 0.5A to 7200A | |
| Measurement input range | 1/225mV-707mV | |
| Permissible overload | 2V for 10s/hours | |
| Power Supply | ||
| Power | 2*2900mAh PANASONIC lithium battery Working time: 10 hours Charging time: 8 hours | |
| 5V DC power supply(included adaptor) | ||
| power consumption | ||
| Screen Maximum Brightness | 2000mW | |
| Screen Minimum Brightness | 1800mW | |
| Wire diameter for terminals | ||
| Current input | BNC connector | |
| Voltage input | Banana plug | |
| DC power supply | DC 5.5*2.1 plug | |
MODBUS-TCP
| Communication | |
| Transmission mode | RJ45 port |
| Communication protocol | MODBUS TCP |
| Settings | |
| IP address | Configurable (default 192.168.1.5) |
| Port No. | 502 |
Port definition
| Port number | Port name | Port function | Remarks |
| 1 | IA | A-phase current input | Current input |
| 2 | IB | B-phase current input | |
| 3 | IC | C-phase current input | |
| 4 | In | N-phase current input | |
| 5 | UN | N-phase voltage input | Voltage input |
| 6 | UC | C-phase voltage input | |
| 7 | UB | B-phase voltage input | |
| 8 | UA | A-phase voltage input | |
| 9 | UE | PE-N voltage input | |
| 10 | Power | POWER 5V DC | Power 5-9V DC |
| 11 | USB port | Download log data | Plug out(in) USB DISK |
| 12 | RJ45 port | Mobus-TCP communication | Communication |
Accessories
| Accessories | |
| Voltage wires | 5pcs voltage clamp wires with banana plug (2 meters,1.5mm²) |
| Adaptor | 85-265 AC to 5V DC adaptor(default Europe plug) |
| Remark | Rogowski coil not included |
Safety and warning notes
In order to guarantee safe operation of the transducer and to be able to make proper use of all features and functions,please read these instructions thoroughly! Safe operation can only be guaranteed if the transducer is used for the purpose it has been designed for and within the limits of the technical specifications. Ensure you get up-to-date technical information that can be found in the latest associated datasheet under Rogowski website.
In order to guarantee safe operation of the transducer and to be able to make proper use of all features and functions,please read these instructions thoroughly! Safe operation can only be guaranteed if the transducer is used for the purpose it has been designed for and within the limits of the technical specifications. Ensure you get up-to-date technical information that can be found in the latest associated datasheet under Rogowski website.
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