ME440 Three-Phase Handheld Multimeter - Complete Specifications

I. Basic Overview Parameters
Table: Item Parameters
Model: ME440
Type: Three-phase handheld multimeter
Supports current sensor: Voltage output type current clamp, Rogowski coil
Supports wiring system: Three-phase four-wire, three-phase three-wire, one-phase two-wire (L-N), one-phase two-wire (L-L), one-phase three-wire (L-L-N)
Applications: Power analysis, energy measurement
Harmonic measurement: Simultaneously measures 51st harmonic
Display screen: 3.5-inch TFT screen, resolution 480*320
Dimensions (LWD): 21.5 x 136 cm
Weight: 850 g
Color: Blue and white

II. Current Input Specifications
Table: Item Parameters
Primary current range: 600A: 0.5A~720A
3kA: 0.5A~3600A
6kA: 0.5A~7200A
Secondary current range: 1mA~6A (Compatible with ST08 or similar current clamp)
Input Voltage: 1/2²⁵mV ~707mV
Overload Capacity: 2V, 10s/hours

III. Power Supply and Power Consumption
Table: Item Parameter
Built-in Power Supply: 2 x 2900mAh lithium batteries, approximately 8 hours of continuous operation
External Power Supply: 5V DC power supply
Power Consumption when screen is always on: 2000mW
Power Consumption when screen is off: 1800mW

IV. Terminal Type
Table: Interface Terminal Type
Current Input: BNC
Voltage Input: Banana connector
DC Power Supply: DC 5.5*2.1 terminal

V. Measurement Function Parameters
1. RMS Measurement
Voltage: UA, UB, UC, PE-N and average value
Current: IA, IB, IC, IN and average value
Power: Active / Reactive / Apparent power of each phase and the sum of three phases
Energy: Active / Reactive power of each phase and the sum of three phases 1. Reactive Power / Apparent Energy (Automatically reset to zero after 999.9 GWh)
Harmonics: Total harmonics of voltage/current, 2nd-51st harmonics (X/Y/Z/V/W harmonics configurable)
Angles: Line voltage phase angle, current phase angle, phase angle of voltage and current in each phase
Power Factor: Average power factor PF of each phase and three phases including harmonics
2. Maximum and Minimum Values
Maximum Values ​​/ Minimum Values: Average voltage and current of each phase and three phases; power of each phase and the sum
Unbalance: Voltage and current at the most unbalanced point of each phase and three phases
3. Demand / Maximum Demand
Current: Average value of each phase and three phases
Power: Active / Reactive / Apparent Power of each phase and the sum
4. Data Refresh Rate
Data Refresh Rate: 500ms

VI. Data Recording and Storage
Table Item Parameter Recording Interval 1~9999s (Default 60s)
Data Format .csv Storage Medium 16GB card, supports USB flash drive download
Storage duration: 12 years (16GB card, 1 time / 60s)
Default storage interval: 1 minute
Recorded content: Meter serial number, timestamp; RMS voltage/current values ​​and harmonics, frequency, power factor; active/reactive/apparent power, energy; current/power demand and maximum demand, etc.