MQ31 Three-Phase Power Quality Analyzer Complete Specifications

I. Basic Overview
Model: MQ31
Type: Three-Phase Power Quality Analyzer
Manufacturer: MEATROL (Shanghai Pinyan)
Application Areas: Power Analysis, Power Measurement
Supported Sensors: Voltage Output Current Clamp, Rogowski Coil (compatible with TRC/NRC series)
Supported Wiring: Three-phase four-wire 4CT, Three-phase four-wire 3CT, Three-phase three-wire 3CT, Three-phase three-wire 2CT, Single-phase
Harmonic Measurement: Can simultaneously measure 51st harmonic
Storage Configuration: 16GB card, supports USB download, default storage interval 1 minute
Display Screen: 8-inch capacitive screen
Physical Parameters
Weight: Approx. 5kg
Dimensions: 415×319×168mm (L×W×D)
Casing Color: Black

II. Electrical Input Parameters
1. Current Input
Table: Item Parameter Primary Current Range 600A: 0.5A~720A
3kA: 0.5A~3600A
6kA: 0.5A~7200A
Secondary current range (ST08 current clamp): 1mA~10A
Input voltage: 1/2⁷mV ~ 707mV
Overload capacity: 2V, 10s/hours
2. Power Supply and Power Consumption
Power supply: Main circuit power, 90~528VAC
Maximum power consumption: 15W
3. Terminal Blocks
ABC phase current input: 3.5mm headphone jack
Voltage input: 4mm banana

III. Measurement Accuracy and Compatible Sensors
1. Rogowski Coil Ranges and Compatible Models
Table: Range Current Range Recommended Coil Model & Sensitivity
Level 1: 600A (6A~720A) TRC-36, 50mV/kA
Level 2: 3000A (10A~3600A) NRC-150, 85mV/kA
Three ranges 6000A (20A~7200A) NRC-200, 50mV/kA
2. Full-dimensional measurement accuracy
Table Measurement Item Accuracy Index
ST08 Current Clamp Measurement 0.5% (100mA~10A)
ABC Voltage Measurement 0.2% (5~528V AC)
Power Factor ±0.005
Active / Apparent Power IEC62053-22 Class 0.5S
Reactive Power IEC62053-21 Class 2S
Frequency 0.01% (45~65Hz)
Active Energy IEC62053-22 Class 0.5S

IV. Compatibility Specifications of Matching Sensors
TRC Series (Mini Flexible Rogowski Coil): Adapted to 600A range, IP67 protection, suitable for portable scenarios
NRC Series (Screw-type Flexible Rogowski Coil): Adapted to 3000A/6000A range, IP68 protection, suitable for outdoor/high voltage scenarios
ST08 Current Clamp: Precise measurement of small currents, covering a range of 10mA~10A

V. Product Advantages
Wide Range Coverage: Compatible with ultra-large current range of 0.5A~7200A, suitable for high and low voltage scenarios
High-Precision Measurement: Energy and power meet IEC international standards, with an accuracy of 0.5S level
Multi-Sensor Compatibility: Can be used with the entire series of self-developed Rogowski coils and current clamps, flexible installation
Outdoor Design: Portable protective case for the entire unit, with the highest protection level for the matched sensors IP68, suitable for harsh working conditions