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ML860B Three phase Energy Meter On site Calibration Device (+Bluetooth APP)
ML860B Three phase Energy Meter On site Calibration Device (+Bluetooth APP)
Product details



Main indicators
>Voltage 0-500V>current 10mA-10A
>Phase 0-360 degrees>frequency 45-65Hz
>Harmonic 2-31st order>accuracy level 0.2

Main features
1. Equipped with a 7-inch 800 * 480 dot matrix TFT true color LCD display, with a graphical operation interface that can be operated by touch screen or buttons, and the interface display is clear and intuitive.
2. Verification method for electric energy meters: It can verify single and three-phase active and reactive electronic energy meters, standard energy meters, mechanical energy meters, electromechanical integrated energy meters, prepaid energy meters, and multifunctional energy meters, as well as measure electric energy in four quadrants.
3. Multi parameter measurement: measures AC voltage, current, power, electrical energy, frequency, phase, power factor, and can also measure the amplitude asymmetry and phase asymmetry of voltage and current, waveform distortion, and the pulse constant of the tested meter's electrical energy.
4. Data and graphic display: It can intuitively display the measurement work status and various measurement data. It can visually display measured voltage and current waveform diagrams, voltage and current phase vector diagrams, harmonic component histograms, and secondary circuit wiring diagrams.
5. Real load measurement of comprehensive errors of low-voltage energy metering devices, as well as measurement of various parameters such as low-voltage CT transformation ratio and angle difference.
6. Waveform display and harmonic analysis: It can measure the content and amplitude of harmonics below the 31st order of voltage/current, and display them in a histogram.
7. Automatically identify wiring errors in P3/P4 energy meters, indicate the incorrect wiring location, display the secondary wiring diagram and power expression, and calculate the correction factor.
8. The wiring simulation function can be used as a training tool to improve the wiring skills of on-site workers. The instrument can obtain corresponding wiring results based on on-site data without connecting voltage and current signals.
9. Record the error curve and display a schematic diagram of the error curve.
10. Measurement of power stability.
11. Load curve recording (trend recording): Select any 4 data items such as voltage/current/frequency/power/power factor for recording.
12. Function of accumulating electrical energy and conducting character tests.
13. PT/CT settings can convert secondary data into primary data.
14. Calculation of voltage and current imbalance.
15. Vector calculator, on-site calculation of voltage and current vector sum.
16. The instrument is equipped with a USB interface, which can export measurement data through a USB flash drive and manage, store, and print detection reports on the computer.
17. The instrument is equipped with an RS232 interface, which can be connected to a computer for data upload and instrument data correction.
18. Scalable Bluetooth wireless+intelligent APP dedicated software, enabling data collection, storage, viewing, and analysis on Android handheld terminals. The APP stores a large amount of on-site testing data, including voltage, current, phase, power, power factor, electrical energy, vector graphics, geographic location, photos, and more.

Product Usage
1. Electrical parameter measurement (U/I/Φ/P/Q/S/PF/Hz);
2. Discrimination of load characteristics between inductive and capacitive circuits;
3. Test the power consumption/power consumption of electrical equipment;
4. Single and three-phase power error verification;
5. Comprehensive measurement of low-voltage measuring devices;
6. Measurement of electricity quality in the power grid;
7. Accuracy measurement of electric energy meter;
8. Check the wiring of household meters and prevent electricity theft.
Technical indicators
Voltage range 0V~500V 5ACLAMP METER Current range 10mA~10A
Voltage resolution 0.001V Current resolution 0.0001A
Voltage error ±0.2% Current error ±0.2%
Input frequency range 45~65Hz Active electrical energy, power ±0.2%
Frequency measurement error ±0.03Hz Reactive energy, power ±0.5%
Phase measurement range 0.0°~360.0° High current clamp Optional 100A/500A/1000A/2000A
Maximum phase error ±1.0° Active electrical energy, power ±0.5%
Pulse constant 5A/kWh Reactive energy, power ±1.0%
Frequency impact <±0.04% Current ±0.5%
Temperature influence <±0.002%/℃ Variable ratio measurement ±0.5%
Environmental temperature -10℃~40℃ work
power supply
DC lithium battery 2200mAh/7.4*2
Relative humidity 40%-95%No condensation PT terminal power supply AC 80V-450
External dimensions 275x200x72(mm) Weight 1650g























Instrument configuration
1. Standard configuration details:
1) 1 host
2) 3 5A clamp current transformers
3) 1 set of voltage testing line
4) Two pulse input and output lines
5) 1 set of photoelectric sampler
6) 1 power adapter
7) 1 USB flash drive (including software)
8) 1 copy of product user manual
9) 1 product certificate/warranty card
10) 1 safety waterproof chassis

2. Details of selected accessories:
1) VMP02 Mini Printer
2) Backup lithium battery
3) 20A clamp current transformer
4) 100A clamp current transformer
5) 500A clamp current transformer
6) 1000A clamp current transformer

7)Bluetooth/APP dedicated software

Attention: Each device can be equipped with 4 sets of clamp gauges of different specifications, and users can choose according to their actual needs.

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Successful operation!

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