a-Eberle PQ-Box ONE – Compact Class A Power Quality Analyser for Socket Outlet Measurements
- Professional power quality analysis – Directly at the point of connection
The a-Eberle PQ-Box ONE is a compact, Class A power quality analyser designed for direct measurements at the socket outlet. Simply plug it in and start measuring. No complex wiring. No interruption of the installation. Just fast, precise, standards-compliant results.
Developed for mobile use in low-voltage networks, the PQ-Box ONE enables rapid troubleshooting of voltage issues, grid disturbances and power quality anomalies exactly where they occur – at the affected load.
Whether you are investigating recurring disturbances, validating compliance with EN 50160, or conducting an energy audit in accordance with ISO 50001, the PQ-Box ONE delivers reliable, legally defensible measurement data.
Why Choose the PQ-Box ONE?
✔ Class A Accuracy According to IEC 61000-4-30 Ed. 4
The PQ-Box ONE meets Class A requirements for power quality measurement, ensuring highest precision and standards-compliant documentation.
✔ Plug & Measure – Automatic Recording
Thanks to the integrated power supply and automatic start function, measurement begins immediately after plugging into a socket.
✔ Direct Socket Measurements (300 V CAT II)
Designed specifically for low-voltage applications and end circuits – ideal for troubleshooting at the consumer level.
✔ Voltage, Current & Power Analysis
Measures voltage (L-N, N-PE), current (up to 16 A continuous / 50 A measuring range), power parameters, harmonics, flicker and transients.
✔ Long-Term Recording with Secure Data Storage
Integrated 1 GB memory supports continuous and long-term measurements over several weeks.
✔ Wi-Fi and USB-C Data Transfer
Fast and secure data download via WLAN/Wi-Fi or USB-C interface.
✔ Powerful Evaluation Software
Analyse and document results with WinPQ mobil software or the PQ-Box App for clear visualisation and automated reporting.
Designed for Precise Power Quality Analysis
The PQ-Box ONE records and evaluates:
- Power frequency
- Supply voltage magnitude
- Flicker (IEC 61000-4-15)
- Voltage dips and swells
- Interruptions
- Voltage harmonics up to the 50th order
- Interharmonics (2 kHz – 9 kHz)
- THD (voltage and current)
- Mains signalling voltage
- Transient influence quantities
- Half-cycle RMS values
- Oscilloscope recordings (20.48 kHz sampling)
This makes it ideal for identifying the exact timing and trigger of disturbances in complex electrical environments.
Typical Applications
The PQ-Box ONE is the perfect solution for:
- 🔎 Clarifying recurring disturbances at sockets or feeders
- ⚡ Investigating voltage issues after system modifications
- 🚗 Analysing charging infrastructure and wallboxes
- 🌞 Verifying compliance of commercial PV systems (EN 50160)
- 🏭 Monitoring sensitive industrial loads and drives
- 🖥️ Assessing data centres and server rooms
- 🔋 Evaluating battery storage systems and storage plants
- 🏠 Troubleshooting residential PV, heat pumps and balcony power systems
It is especially suitable when you need clear, time-stamped evidence for internal decisions or third-party discussions — without modifying the fixed installation.
Built for Mobile Professional Use
Compact, robust and lightweight (approx. 0.25 kg), the PQ-Box ONE fits easily into any service case.
Key technical highlights:
- Measurement interval: 1 sec – 30 min
- Sampling frequency: 20.48 kHz (50/60 Hz)
- Protection class: IP30
- Operating temperature: -10°C to +50°C
- Time synchronisation via NTP (Wi-Fi)
- Integrated maintenance-free power buffer (bridges short interruptions)
The internal buffer ensures that short supply interruptions do not result in data loss – measurement continues automatically once power returns.
Ideal For:
- Electrical contractors
- Energy consultants
- Industrial maintenance teams
- Utilities and grid operators
- Facility managers
- Service technicians
- Power quality specialists
If you require time-limited, non-invasive measurements directly at the load, the PQ-Box ONE is your go-to Class A power quality analyser.
PQ-Box ONE – Expert Features
| Features | |
| Hardware & Basic Specifications |
| Sampling frequency (Voltage) | 40.96 kHz |
| Sampling frequency (Current) | 40.96 kHz |
| Voltage channels (16-bit) | 2 |
| Current channels (16-bit) | 1 |
| IP Protection | IP30 |
| Evaluation according to EN50160 / IEC 61000 / IEEE 519 | ✓ |
| Recording – 200 ms & 3 s (parallel to free interval) |
| Voltage average, half-cycle min/max | ✓ |
| Current average, half-cycle min/max | ✓ |
| Current transients (I peak) | ✓ |
| Power: P, Q, S, PF, cosφ, sinφ, tanφ | ✓ |
| Distortion & unbalance power | ✓ |
| Energy: P+, P−, Q+, Q− | ✓ |
| Flicker (Pst, Plt, Pinst) | ✓ |
| Voltage harmonics (up to 50th, Class A) | ✓ |
| Voltage harmonics extreme values (2nd–50th, 200 ms RMS) | ✓ |
| Phase angle of voltage & current harmonics | ✓ |
| Voltage suprharmonics (2–20 kHz) | ✓ |
| Current harmonics (2nd–50th) | ✓ |
| Current harmonics extreme values (200 ms RMS) | ✓ |
| Current suprharmonics (2–20 kHz) | ✓ |
| THD-U, THDI, PWHD-U, PWHD-I, PHC, TDD | ✓ |
| Frequency spectrum (5 Hz resolution up to 20 kHz) | ✓ |
| Ripple control signal (100 Hz – 5 kHz) | ✓ |
| Frequency, 10 sec avg/min/max | ✓ |
| 10 / 15 / 30 min Intervals (additional) |
| P, Q, S, D, cosφ, sinφ, tanφ | ✓ |
| Oscilloscope & Spectrum |
| Oscilloscope recorder (40.96 kHz) | ✓ |
| Power triangle 3D (active/reactive/apparent/distortion) | ✓ |
| Online spectrum analysis (DC – 20 kHz) | ✓ |
| Voltage & current harmonics 2–9 kHz (200 Hz bands) | ✓ |
| Direction of harmonics & phase angle | ✓ |
| Trigger Functions |
| RMS level trigger (Voltage & Current) | ✓ |
| RMS step trigger | ✓ |
| Half-cycle frequency trigger (level, df/dt) | ✓ |
| Phase shift trigger | ✓ |
| Envelope trigger | ✓ |
| Interval / automatic trigger | ✓ |
| Optional Features |
| Option RI – Ripple signal recorder (100 Hz – 3 kHz) | ✓ |
| Option SI – WLAN / WiFi | ✓ |
Get Reliable Power Quality Data – Exactly Where You Need It
The a-Eberle PQ-Box ONE combines Class A precision, true plug-and-play operation and powerful analysis tools in a compact, mobile device.
For fast troubleshooting, professional documentation and confident decision-making – directly at the socket outlet.
❓ Frequently Asked Questions (FAQ)
Q1: What standards does the PQ-Box ONE comply with?
A. It meets Class A requirements according to IEC 61000-4-30 Ed. 4 and supports evaluations in line with EN 50160, IEC 61000-2-2 and IEC 61000-2-4.
Q2: Does the device start recording automatically?
A. Yes. Simply plug it into a socket outlet and the measurement starts automatically.
Q3: Can I perform long-term measurements?
A. Yes. With integrated 1 GB memory and adjustable measurement intervals (1 second to 30 minutes), the device supports extended recording periods.
Q4: How is the data evaluated?
A. Data can be transferred via Wi-Fi or USB-C and analysed using WinPQ mobil software or the PQ-Box App, including automated reporting and standards-based evaluation.
Q4: Is the PQ-Box ONE suitable for energy audits?
A. Absolutely. It provides highly accurate voltage, current and power measurements and can be used as a power meter for ISO 50001 energy audits.
Q5: Can it capture short disturbances or transients?
A. Yes. With high sampling rates (20.48 kHz), oscilloscope functions and configurable trigger options, even short events are recorded reliably.