I. Access and Power Supply Specifications
Table Item Parameters
Current Sensor: Rogowski coil, voltage output current clamp
Voltage Access Method: Direct access, access via voltage transformer
Power Supply: 85-305VAC/100-430VDC
Maximum Power Consumption: 5VA
Communication Interface: RJ45 Ethernet (Modbus-TCP), RS485 (Modbus-RTU)

II. Storage Specifications
Table Item Parameters
Storage Type: TF card
Storage Capacity: 32GB
Data Export: USB flash drive (USB flash drive must be FAT32 file system)
Storage Format: CSV format
Recording Configuration: Recording start time, duration, and recording interval can all be set.

III. Display and Mechanical Specifications
Table Item Parameters
Screen Size: 3.5 inches
Display Type: IPS display
Screen Resolution: 480*800
Overall Dimensions: 969694mm
Overall Weight: 850g

IV. Environmental and Protection Specifications
Table Item Parameters
Operating Temperature -20℃~+55℃
Operating Humidity: Below 90% RH
Storage Temperature: -40℃~+70℃
Storage Humidity: Below 95% RH (non-condensing)
Applicable Altitude: ≤2km
Measurement Category: CAT III 600V
Protection Rating: IP30

V. Measurement Accuracy Parameters
Table: Measurement Item | Measurement Range | Accuracy
Voltage | 0-600VAC | 0.2%
Current | Varies depending on sensor | 0.2% + Current sensor accuracy
Frequency | 45-65Hz | ±0.001Hz
Power Factor | -1~+1 | ±0.005
Active Power | — | 0.5%
Reactive Power | — | 1%
Apparent Power | — | 0.5%
Active Energy | — | 0.5%
Reactive Energy | — | 1%
Apparent Energy | — | 0.5%

VI. Measurement Function Parameters
1. Real-time Measurement Data
Voltage: ABC phase voltage, UAB/UBC/UCA Line voltage, peak voltage factor, peak voltage
Current: Phase current of ABCN, peak current factor, K factor
Frequency: Line frequency
Power: Phase ABC and total active/reactive/apparent power
Power factor: Phase ABC and total power factor, total fundamental power factor
Energy: Phase ABC and total active/reactive/apparent energy (supports import/export), CO₂ emissions
2. Harmonic Measurement Data
Voltage Harmonics: THD/TOHD/TEHD, percentage of harmonics 1-50 of ABC phases and voltage values
Current Harmonics: THD/TOHD/TEHD, percentage of harmonics 1-50 of ABC phases and current values
3. Waveform, Phase Angle and Unbalance
Waveform: Phase ABC voltage/line voltage waveform, Phase ABC current waveform
Phase Angle: Phase ABC voltage phase angle, current phase angle, phase angle between voltage and current
Unbalance: Voltage unbalance, current unbalance
4. Demand Measurement
Power Demand and Maximum Demand: Active / Reactive / Apparent Power and Total Power of Phases A, B, C
Current Demand and Maximum Demand: Current of Phases A, B, C

VII. Recording Types
Basic Data Recording: Full range of basic parameters including voltage, current, frequency, power, energy, harmonics, unbalance, phase angle, maximum and minimum values, and demand.
Harmonic Data Recording: Voltage / Current 1st-50th harmonics and total harmonic data.
Event Recording: Records event type, start time, duration, and amplitude (only effective when data recording is enabled).
Waveform Recording: Supports custom configuration of waveform recording parameters.