What is the PQ-Box ONE used for at socket outlets?

PQ-Box ONE is used for fast, load-level measurements directly at a socket outlet to clarify voltage issues and disturbances in low-voltage networks. It records voltage, current and power and supports standards-based evaluation according to EN 50160 and IEC 61000-2-2 / IEC 61000-2-4.

Which standards are relevant for measurements with PQ-Box ONE?

For voltage quality assessment, EN 50160 and IEC 61000-2-2 / IEC 61000-2-4 are used. For the measurement method and comparability, IEC 61000-4-30 Class A applies (product page reference: Ed. 4).

Which parameters does PQ-Box ONE measure for troubleshooting?

It measures voltage, current and power values (P, Q, S, PF/cosφ), energy, and common power quality indicators such as events, flicker (Pst/Plt) and THD. This enables time-stamped documentation and clearer root-cause assignment at the affected load.

How is measurement data transferred and evaluated?

Data is transferred via Wi-Fi or USB-C to a PC, tablet or smartphone. Evaluation and reporting are performed using WinPQ mobil or the PQ-Box App, including standards-based checks against EN 50160 and IEC 61000-2-2 / IEC 61000-2-4.

When should I choose PQ-Box ONE instead of PQ-Box 150?

Choose PQ-Box ONE when you need fast, decentralized measurements at the load via a socket outlet with minimal installation effort. PQ-Box 150 is typically preferred for more complex installation environments (e.g., distribution panels) and broader measurement setups.

PQ-Box ONE: The PQ Analyser for Socket Outlet Measurements

Q: How are disturbances captured reliably in practice?

Disturbances are captured through long-term recording plus event/disturbance recorder functions. Preconfigured triggers (e.g., under/overvoltage, step changes, frequency events) help record sporadic anomalies with precise time correlation for later analysis and reporting.

Designed for Precise Power Quality Analysis and Troubleshooting Directly at the Point of Connection

Compact, Robust and Designed for Mobile Use

Precise Class A Measurement for Energy Audits and Network Assessment

Automatic Recording and Easy Evaluation with WinPQ mobil and or the PQ-Box App

Designed for Precise Power Quality Analysis and Troubleshooting Directly at the Point of Connection

Compact, Robust and Designed for Mobile Use

Precise Class A Measurement for Energy Audits and Network Assessment

Automatic Recording and Easy Evaluation with WinPQ mobil and or the PQ-Box App

For fast, on-site clarification of voltage issues and disturbances in grids and networks at sockets and end circuits. It supports operations, maintenance and service work with reliable measurement data for decisions and documentation.

Typical Application:

Clarifying recurring disturbances at sockets, feeders or individual loads
Pinpointing issues after modifications, extensions or equipment replacement
Assessing anomalies affecting charging infrastructure, drives or sensitive equipment
Documenting events for internal clarification and discussions with third parties

This Device Is Suitable If:

You need to substantiate disturbances directly at the affected load with clear evidence
You want to pinpoint the timing and trigger of anomalies unambiguously
You require measurement data for internal decisions or communication with third parties
You need a time-limited check without interfering with the fixed installation in the grid or network

The PQ Analyser for Socket Outlet Measurements

PQ-Box ONE

The »PQ-Box ONE« is the ideal tool for fast power quality analysis directly at the socket outlet. It combines highest measurement accuracy, easy handling and a compact design in a single device. The power quality analyser was specifically developed for mobile applications in low-voltage networks and enables the assessment of voltage quality in accordance with EN 50160 and IEC 61000-2-2 and IEC 61000-2-4. Thanks to the integrated power supply and the automatic measurement start function, simply plugging the device into a socket outlet is sufficient and the measurement starts immediately. Typical applications include energy audits, fault analysis, disturbance investigations and power quality assessments in industry, energy supply and building services engineering. The PQ-Box ONE is evaluated using the proven and particularly user-friendly WinPQ mobil software and or via the PQ-Box App.

Further questions or want to start an enquiry? Please click “Product Enquiry”.

Applikationen

Downloads

Direct Power Quality Analysis at the Point of Connection

Residential Buildings with PV Systems, Wallboxes & Heat Pumps

Electrical Installations in Office Buildings & Commercial Properties

Industrial Facilities & Production Plants

Data Centres & Server Rooms

Wallboxes & Charging Infrastructure

Commercial PV Systems (Compliance with EN 50160)

Balcony Power Systems & Mini PV Installations

Battery Storage Systems & Storage Power Plants (MV/LV)

A. Eberle GmbH & Co. KG

Measure. Regulate. Across All Grids.

A. Eberle GmbH & Co. KG, founded in 1980 and headquartered in Nuremberg, Germany, operates in the field of measurement and regulation technology for the energy sector as well as for medium-sized and large industrial companies. Our products and services ensure and enhance the availability of energy supply across all voltage levels and support the integration of renewable energy sources into power grids.

Cross-Product Downloads

Special Publications

202308_Richtung_von_Harmonischen

20240101

7.73 MB

202308_Direction_of_Harmonics

20240101

7.71 MB

202211_Netzrückwirkungen

20220201

4.65 MB

202211_Mains_Feedback

20220201

3.45 MB

202204_Spannungseinbrüche

20220201

2.45 MB

202204_Voltage Distortions

20220201

4.46 MB

202202_Die 3. Harmonische in der Praxis

20220216

0.82 MB

202202_The Third Harmonic

20220216

0.83 MB

202202_Der N-Leiter & Harm. Oberschwingungen

20210901

0.45 MB

202202_The N-Conductor & Harmonics

20211201

0.45 MB

202201_Wandel in der Energietechnik – Teil 2

20220101

0.79 MB

202201_Changes in Energy Technology - Part 2

20220101

0.83 MB

202111_Wandel in der Energietechnik – Teil 1

20210901

0.97 MB

202111_Changes in Energy Technology - Part 1

20210901

0.75 MB

201901_Power Quality unter der Lupe

20190101

5.46 MB

201901_Power Quality Under the Microscope

20190101

5.44 MB

201809_Paralleles Laden

20180901

4.63 MB

201809_Simultaneous Charging

20180901

4.83 MB

201803_Bewertung von Supraharmonischen

201603_Spannungsqualität auf allen Netzebenen

20160301

1.19 MB

201603_Voltage Quality at All Grid Levels

20160301

1.34 MB

201211_Detektive im Netz

20121101

1.08 MB

201211_Power Grid Detectives

20121101

1.95 MB

Flyer

FL_PQBoxen_2023_DE.pdf

20230501

7.77 MB

FL_PQBoxen_2023_EN.pdf

PQMobil_Handout_2025_DE.pdf

20250603

2.26 MB

PQMobil_Handout_2025_EN.pdf

20250603

2.26 MB

PQMobil_Handout_2025_ES.pdf

20250701

2.26 MB

Feature Matrix

PQ_Mobil_FeatureMatrix_DE_2023_1920.pdf

20230501

0.26 MB

PQ_Mobil_FeatureMatrix_EN_2023_1920.pdf

20230501

0.29 MB

PQ_Mobil_FeatureMatrix_FR.pdf

20220221

0.24 MB

Product Overview A. Eberle

Produktuebersicht_Flyer_DE.pdf

20250214

2.3 MB

Produktuebersicht_Flyer_CH.pdf

20251110

5.49 MB

Product_Overview_Flyer_EN.pdf

20250214

2.32 MB

Product_Overview_Flyer_ES.pdf.pdf

20251007

5.47 MB

A. Eberle Seminars in Nuremberg

A._Eberle_Seminaruebersicht_DE.pdf

20250101

3.73 MB

PQ-Box ONE

Instruction Manual

Technical Data Sheets

Accessories

Catalogue

Current Clamp

TD_Ministromzangen_5A_de_111.7043.pdf

20171106

0.4 MB

TD_Ministromzangen_5A_en_111.7043.pdf

20171106

0.45 MB

TD_DC-Stromzange_de_111.7099.pdf

20210226

0.35 MB

TD_DC-Stromzange_en_111.7099.pdf

20210226

0.33 MB

TD_Ministromzangen_3x20A_de_111.7003.pdf

20171106

0.4 MB

TD_Ministromzangen_3x20A_en_111.7003.pdf

20171106

0.38 MB

TD_Ministromzangen_4x20A-4x200A_de_111.7015.pdf

20171106

0.34 MB

TD_Ministromzangen_4x20A-4x200A_en_111.7015.pdf

20171106

0.32 MB

TD_Ministromzangen_4x50A_de_111.7035.pdf

20171106

0.33 MB

TD_Ministromzangen_4x50A_en_111.7035.pdf

20171106

0.32 MB

TD_Leckstromzange_de_111.7098.pdf

20230202

0.52 MB

TD_leakage_current_clamp_en_111.7098.pdf

20230202

0.53 MB

Rogowski Current Clamps

TD_Rogowskispule_4x500A_DE_111.7085.pdf

20171106

0.31 MB

TD_Rogowskispule_4x500A_EN_111.7085.pdf

0.31 MB

TD_Rogowskispule_4x3000A_DE_111.7001.pdf

20171106

0.36 MB

TD_Rogowskispule_4x3000A_EN_111.7001.pdf

20171106

0.36 MB

TD_Rogowskispule_4x3000A_DE_111.7030.pdf

20201111

0.61 MB

TD_Rogowskispule_4x3000A_EN_111.7030.pdf

20201111

0.61 MB

TD_Rogowskispule_4x6000A_DE_111.7006.pdf

20171106

0.36 MB

TD_Rogowskispule_4x6000A_EN_111.7006.pdf

20171106

0.36 MB

TD_Rogowskispule_3x3000A_DE_111.7022.pdf

20171106

0.3 MB

TD_Rogowskispule_3x3000A_EN_111.7022.pdf

20171106

0.3 MB

TD_Rogowskispule_4x8000A_DE_111.7009.05.pdf

20230307

0.38 MB

Adapter Cable Set

TD_Adapterleitung_DE_582.2039.pdf

20171106

0.2 MB

TD_Adapterleitung_EN_582.2039.pdf

20171106

0.2 MB

TD_Adapterkabelset_2m_de_111.7004.pdf

20180928

0.25 MB

TD_Adapterkabelset_2m_en_111.7004.pdf

20180928

0.25 MB

TD_Adapterkabelset_2m_de_111.7028.pdf

20180928

0.22 MB

TD_Adapterkabelset_2m_en_111.7028.pdf

20180928

0.22 MB

TD_Verlaengerung_Messleitung_5m_de_111.7025.pdf

20180928

0.23 MB

TD_Verlaengerung_Messleitung_5m_en_111.7025.pdf

20180928

0.22 MB

Remote Access

IM_PQBox_Remote_Access_DE.pdf

20251029

0.69 MB

IM_PQBox_Remote_Access_EN.pdf

20251029

0.71 MB

Calib-Box

BA_Calib-Box-and-SW_DE.pdf

20200609

1.84 MB

BA_Calib-Box-and-SW_EN.pdf

20200609

1.63 MB

External Power Supply

TD_Power-Supply_de_111.7069.pdf

20181001

0.24 MB

TD_Power-Supply_en_111.7069.pdf

20181001

0.24 MB

Designed for Precise Power Quality Analysis Directly at the Socket Outlet

The PQ-Box ONE is a powerful Class A measuring device in accordance with IEC 61000-4-30 Ed. 4. It measures voltage, current and power between phase, neutral and earth, enabling a comprehensive real-time assessment of power quality.

Thanks to preconfigured triggers and automatic detection functions, it delivers fast and reliable results even in complex network conditions. Simply plug in, measure and evaluate. No complex setup required.

Compact, Robust and Designed for Mobile Use - Ideal for Applications in Industry, Energy Supply and Building Services Engineering

The PQ-Box ONE combines a robust housing with a particularly compact and easy-to-handle design. With an integrated power supply and minimal weight, it is ideally suited for mobile use in low-voltage applications (300 V CAT II).

Whether in the workshop, laboratory, building services engineering, office and commercial buildings or directly on site at the customer’s premises, the PQ-Box ONE can be used wherever fast results are required and space is limited.

Precise Class A Measurement for Energy Audits and Network Assessment

The PQ-Box ONE meets all requirements for Class A measuring devices in accordance with IEC 61000-4-30 Ed. 4 and also serves as a precise power meter for energy audits in line with ISO 50001. It records voltage, current and power with the highest accuracy and provides a reliable basis for assessing power quality, directly within the network at the individual consumer level.

This makes it a valuable source of information for optimising energy efficiency, network stability and system availability.

Automatic Recording and Easy Evaluation with WinPQ mobil

The PQ-Box ONE reliably records measurement data over periods of several weeks. Via Wi-Fi or USB-C, this data is transferred quickly and securely to the WinPQ mobil software or the PQ-Box App. The particularly user-friendly evaluation tools enable simple, standards-compliant analysis and clear visualisation of all network parameters.

As a result, utilities, industrial companies and electrical contractors benefit from a compact all-in-one solution for precise and efficient power quality analysis.

Video-Presentation: PQ-Box ONE

The Compact Power Quality Analyser for Measurements at the Socket Outlet

You Have Questions About the PQ-Box ONE?

Our Specialists Will Be Happy to Help You!

Not Sure What Device Is the Right One for You?

Find the Right Power Quality Analyzer for Your Application

PQ-Box ONE

PQ-Box 50

PQ-Box 150

PQ-Box 200

PQ-Box 300

40,96 kHz

Sampling frequency voltage

40,96 kHz

Sampling frequency curent

2 (16-bit)

Input voltage (resolution)

1 (16-bit)

Input current (resolution)

1 GB

Memory size

•

WLAN / USB-C

(UPS 30 s)

Operating time via battery

20,48 kHz

Sampling frequency voltage

20,48 kHz

Sampling frequency current

4 (16-bit)

Input voltage (resolution)

4 (16-bit)

Input current (resolution)

1 GB

Memory size

•

WLAN

2 h

Operating time via battery

20,48 kHz

Sampling frequency voltage

20,48 kHz

Sampling frequency current

4 (24-bit)

Input voltage (resolution)

4 (24-bit)

Input current (resolution)

4GB (32)

Memory size (optional)

WLAN

4,0 h

Operating time via battery

40,96 kHz

Sampling frequency voltage

40,96 kHz

Sampling frequency current

up to

4 MHz

Sampling frequency transient measurement

4 (24-bit)

Input voltage (resolution)

5 (24-bit)

Input current (resolution)

•

Binary input

8GB (32)

Memory size (optional)

WLAN

4,0 h

Operating time via battery

40,96 kHz

Sampling frequency voltage

40,96 kHz

Sampling frequency current

409,60 kHz

Sampling frequency transient measurement

4 (24-bit)

Input voltage (resolution)

5 (24-bit)

Input current (resolution)

•

Binary input

8 GB (32)

Memory size (optional)

WLAN

3,5 h

Operating time via battery

Download the Full Product Matrix

WinPQ mobile
High-quality analysis software

WinPQ mobil was designed to support the user in evaluating the data. The clear presentation of the measured values was the main focus. Thus, the software not only advances the PQ-Box, but also the user.

More Information

How It Works in Practice: PQ-Box ONE as a Power Quality Analyzer

The PQ-Box ONE power quality analyzer is designed for analysis in low-voltage networks at standard socket outlets. Measurement starts immediately after plugging in, preconfigured triggers support fast disturbance identification, and the data is then evaluated via Wi-Fi or USB-C using WinPQ mobil or the PQ-Box App.

Step	Practical Action	Technical (Short & Precise)	Output
1) Plug In & Start	Select measuring point (socket outlet at the affected load) and plug in PQ-Box ONE	Designed for low-voltage socket outlets (300 V CAT II); measurement starts immediately, no complex setup required	Measurement campaign starts instantly at the real problem location
2) Record & Capture Disturbances	Define measurement duration (screening to long-term)	Recording possible over weeks; freely selectable interval (e.g. 1 s to 30 min); preconfigured triggers + disturbance recorder function for events	Trend curves + time-stamped events (root cause assignment)
3) Time Reference & Reliability	Synchronize time if required; ensure stability during short outages	NTP time sync via Wi-Fi possible; Power Cap bridges short interruptions (~30 s) and stores last disturbance record; automatic restart afterwards	Clean correlation + fewer data gaps
4) Transfer & Analyze Data	Transfer data to PC/tablet/smartphone and start analysis	Data transfer via Wi-Fi or USB-C; evaluation with WinPQ mobil and/or PQ-Box App; standards-based assessment (EN 50160 / IEC 61000-2-2 / -2-4) and Class A according to IEC 61000-4-30 (Ed. 4)	Visualization, limit/standards check, report/export

FAQ - Frequently Asked Questions

What is the PQ-Box ONE - and why is it suitable as a power quality analyzer?

The PQ-Box ONE is a compact power quality analyzer designed for socket-outlet measurements in low-voltage networks. It records voltage quality, currents, and power values directly at individual loads and supports standards-based evaluation (e.g., EN 50160, IEC 61000-2-2 / -2-4). With preconfigured triggers, long-term recording, and analysis in WinPQ mobil, disturbances can be clearly localized and documented.

For which measurement environments is the PQ-Box ONE designed?

It is intended for analysis in low-voltage networks at socket outlets and is typically used in building technology, industry, and energy supply when fast, load-related measurements are required. Technically rated for 300 V CAT II.

Which standards does the PQ-Box ONE support for voltage quality assessment?

The PQ-Box ONE supports power quality assessment according to EN 50160 and IEC 61000-2-2 / IEC 61000-2-4. As a measurement reference, IEC 61000-4-30 Class A applies (product page: Ed. 4; technical documents reference Ed. 3).

Which electrical parameters can be measured?

It records voltage, current, and power (P, Q, S, PF/cosφ), energy values, and typical power quality parameters. The datasheet also lists PQ events, flicker (Pst/Plt), THD values, and additional evaluation functions.

Which frequency ranges and harmonics are covered?

According to the datasheet, voltage and current harmonics up to the 50th order are recorded, as well as supraharmonics from 2 kHz to 9 kHz (IEC 61000-4-7) and FFT analysis up to 10 kHz.

How does disturbance analysis work in practice?

Root cause analysis is based on a combination of long-term recording and event/disturbance recorder functions. Preconfigured triggers (e.g., under/overvoltage, step changes, frequency events, interval and automatic triggers) ensure even sporadic anomalies are reliably captured with precise time correlation.

How long can the PQ-Box ONE record - and what is the resolution?

The device is designed for multi-week measurements. The datasheet specifies 1 GB memory capacity, enabling long-term recordings (up to one year depending on interval and scope). The recording interval can be freely set from 1 s to 30 min.

What happens during a short power interruption?

A maintenance-free Power Cap buffer bridges short interruptions (datasheet: 30 seconds). The last disturbance record is saved, and after voltage restoration the device restarts automatically and continues the measurement.

How are measurement data transferred and evaluated?

Data transfer is via Wi-Fi or USB-C. Evaluation is performed using WinPQ mobil (including automated reports according to EN 50160 / IEC 61000-2-2) or alternatively via the PQ-Box App.

What is the practical difference between the PQ-Box ONE and the PQ-Box 150?

Both systems support Class A-compliant power quality measurements. The PQ-Box ONE significantly reduces installation effort and is ideal for fast, decentralized, load-level measurements, whereas the PQ-Box 150 is suited for more complex installation environments in distribution panels.

More Power Quality Devices

Discover Our Diverse Product Range

I-Sense: Feeder Current Measurement Technology for up to 16 Feeders

PQI-DE: The Fix-Installed Tool for Power Quality Experts

PQI-DA Smart: The Fix-Installed Power Quality Allrounder

PQI-D: The Flexible (*discontinued, can only be ordered until 31.12.2026)

PQ-Box ONE: The PQ Analyser for Socket Outlet Measurements

PQ-Box 50: Mobile & Universal Class a Analyzer

PQ-Box 150: The Mobile Power Quality Analyzer

PQ-Box 200: The Mobile Power Quality Meter for Experts

PQ-Box 300: The Mobile Network Analyzer

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