Table of Contents

Overview of Handheld Power Quality Analyzer

The handheld power quality analyzer is a portable, rugged test instrument complying with IEC 61000-4-30 Class A standards. Designed for on-site use, it accurately monitors key power parameters and detects common grid anomalies including harmonics, voltage fluctuations and three-phase unbalance. Featuring high-speed sampling and real-time data recording, it enables efficient field fault diagnosis. Lightweight and adaptable to harsh environments, it is widely applied in grid maintenance, industrial manufacturing and new energy power quality inspection.

Functional Features

This high-precision tester is dedicated to detecting grid power quality issues including waveform distortion, harmonic content and three-phase unbalance. It also supports electrical parameter measurement, harmonic judgment, vector analysis and historical data review.
It accurately measures diverse electrical parameters: voltage, current, active power, reactive power, phase angle, power factor, frequency and more.
Vector diagrams of measured voltage and current can be displayed, enabling users to verify the wiring correctness of metering devices via vector graph analysis.
Current measurement is realized via clamp-on current transformers. Operators can carry out safe and convenient testing without breaking the current loop. Clamp meters with various measuring ranges are optional to meet different test requirements.
It analyzes AC power quality supplied by public grids to end users, covering frequency deviation, voltage deviation, permissible three-phase voltage unbalance and grid harmonics.
It displays single-phase voltage/current waveforms as well as three-phase voltage and current waveforms simultaneously.
All testing pages support screen lock function for easy data reading and analysis.
Load fluctuation monitoring: It tracks power quality fluctuations caused by electrical loads under various operating conditions, and regularly records & stores the changing trends of voltage, current, power, frequency, phase and other parameters.
It dynamically monitors power equipment during commissioning and operation, assisting users in troubleshooting problems occurring during equipment adjustment and startup.
It tests dynamic parameters of reactive power compensation and harmonic filtering devices, and provides quantitative evaluation of their performance and technical indicators.
Users may customize data storage intervals to continuously save measured data automatically.
Equipped with an external large-capacity SD card for data storage; it can store data continuously for over 18 months at a 1-minute recording interval, ideal for long-term on-site monitoring.
Built-in USB port allows users to copy stored data to a computer via USB flash drive effortlessly.
Matched with professional background data management software, data from USB drives can be uploaded to a PC.
Comprehensive and rapid data processing can be completed on the computer terminal.
Built-in perpetual calendar and real-time clock display date and time. Test data can be saved on-site and exported to computers for digital management and automated report generation via optional background software.
Adopts a large imported color LCD screen with Chinese menu prompts and multi-parameter display layout, delivering a user-friendly human-machine interaction experience.
The LCD screen automatically switches to power-saving mode after 3 minutes of inactivity to extend battery life.
Conductive silicone buttons feature comfortable hand feel, long service life and ergonomic layout for simple operation.
Powered by a built-in high-capacity lithium-ion rechargeable battery, offering over 8 hours of continuous working time when fully charged.
Compact size and lightweight design make it easy to carry. It is applicable for field on-site testing as well as standard metering work in laboratories.

Technical Specifications

Classification	Parameter Item	Technical Data
1. Input Characteristics	Voltage Measuring Range	0～800 V, automatic range switching
	Current Range (Clamp CT)	Standard: 5A/25A Optional: 100A/500A, 1000A/2000A
	Phase Angle Measuring Range	0 ~ 359.99°
	Frequency Measuring Range	45 ~ 65 Hz
	Voltage Channels	3 channels (UA, UB, UC)
	Current Channels	3 channels (IA, IB, IC)
	Maximum Analyzable Harmonic Order	63rd harmonic
	Continuous Storage Duration (1min interval)	Up to 18 months
2. Measurement Accuracy	Voltage	±0.2%
	Frequency	±0.01 Hz
	Current & Power	±0.5%
	Phase Angle	±0.2°
	Fundamental Voltage Error	≤0.5% F.S.
	Fundamental Current Error	≤1% F.S.
	Fundamental Voltage-Current Phase Difference Error	≤0.2°
	Harmonic Voltage Ratio Error	≤0.1%
	Harmonic Current Ratio Error	≤0.2%
	Three-phase Voltage Unbalance Error	≤0.2%
	Voltage Deviation Error	≤0.2%
	Voltage Fluctuation Error	≤0.2%
3. Working Conditions & Power	Operating Temperature	-10℃ ~ +40℃
	Charging Input	AC 220V, 45Hz~55Hz
	Main Unit Power Consumption	≤3 VA
	Max Battery Runtime	8 hours
4. Insulation Performance	Insulation Resistance (Input to Chassis)	≥100 MΩ
	Withstand Voltage Test	AC 1.5kV (RMS), 1 minute power frequency withstand test
5. Physical Dimension	Overall Size	320mm × 240mm × 130mm
	Net Weight	2.0 kg

Packing List – Handheld Power Quality Analyzer

No.	Item Description	Qty	Remarks
1	Handheld Power Quality Analyzer Main Unit	1 Set	Original standard unit
2	Three-phase Current Clamps	3 Pcs	Standard range 5A/25A
3	4-core Voltage Test Cables & Alligator Clips	1 Set	Yellow / Green / Red / Black
4	USB Flash Drive	1 Pc	For data storage & software
5	AC Power Adapter Charger	1 Pc	220V charging input
6	User Manual & Certificate	1 Set	English version
7	Portable Carrying Case	1 Pc	For field carrying & protection

FAQ for Handheld Power Quality Analyzer

Q1: What is a handheld power quality analyzer used for?

A handheld power quality analyzer is a portable field testing instrument for single-phase and three-phase AC power systems. It detects, records and analyzes common power quality anomalies, including harmonic distortion, voltage/current fluctuations and power factor deviation. Widely applied in on-site commissioning, power maintenance, equipment fault troubleshooting and grid compliance inspection, it effectively solves equipment overheating, frequent tripping and low energy utilization issues caused by poor power quality.

Q2: What power systems does this analyzer support?

It supports mainstream power system configurations: single-phase two-wire (1P2W), three-phase three-wire (3P3W) and three-phase four-wire (3P4W). Suitable for low-voltage distribution systems in industrial, commercial and residential buildings, it covers all conventional on-site power testing scenarios.

Q3: What are the core advantages of handheld type compared with desktop power quality analyzers?

Compared with fixed desktop analyzers, this handheld device features lightweight, portable design and battery-powered wireless operation. It requires no external power supply, adapts to outdoor and narrow construction spaces, and enables fast on-site fault location and data recording, ideal for field maintenance and mobile power inspection.

Q4: What power quality parameters can the device measure and record?

It supports full-range standard power quality measurement and logging, including RMS voltage/current, frequency, power parameters, power factor, up to 63rd harmonic distortion, voltage sag/swell/interruption, transient overvoltage, flicker, three-phase unbalance and power consumption. It supports real-time monitoring and long-term continuous data logging.

Q5: Can it capture transient voltage and sudden power anomalies?

Yes. Equipped with a high-speed sampling module, it delivers millisecond-level response and captures up to 8kV transient voltage. It can detect instantaneous voltage surges, dropouts and impact current anomalies that ordinary meters miss, enabling accurate location of intermittent power faults.

Q6: Does the analyzer support DC power system detection?

Standard models are designed for AC power system testing. For DC scenarios such as PV power generation and battery energy storage, optional DC measurement functions or dedicated DC clamp sensors are required. Please confirm relevant configurations before use.

Q7: What is the measurement accuracy level of the instrument?

Professional models comply with IEC 61000-4-30 Class A standard. Voltage and current measurement accuracy reaches ±0.2% FS, with harmonic and flicker measurements compliant with IEC 61000-4-7 and IEC 61000-4-15 respectively, meeting industrial and official compliance testing requirements.

Q8: How to wire the analyzer correctly for three-phase testing?

For 3P4W systems, connect L1/L2/L3 voltage leads to live wires and the neutral lead to the N wire, then match current clamps to corresponding phases and verify phase sequence and clamp direction. For 3P3W systems, select the corresponding wiring mode on the device for automatic parameter calculation. Always check wiring tightness before testing to avoid data errors.

Q9: Can the device work in extreme temperature and complex environments?

It features industrial-grade dustproof and drop resistance, with a working temperature range of -10℃ to 50℃, adapting to factory workshops and outdoor construction sites. Avoid long-term use in rainy, humid or corrosive environments to protect internal precision components.

Q10: Does the instrument need external power during field testing?

It supports dual power supply: built-in rechargeable battery and circuit self-power. It can be powered by the measured circuit on-site without an external adapter. A full battery supports 8–12 hours of continuous testing.

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