Power Quality Device With Fault Recorder Function
Fixed Installed Solutions
Power Quality Analysis Software
For Our Fixed Installed Solutions
WebPQ®
The Easy Way to Analyse Your Power Quality Measurement Data
The new WebPQ® is the central analysis software for all fixed installed fault recorders, power quality monitoring devices and for the evaluation of the portable power quality analysers* from A. Eberle.
NEW: Power Quality Services by A. Eberle
We Support You With Your Grid Analysis Projects
Power Quality
Services
Expert Knowledge That Moves You Forward
We offer you power quality audits with troubleshooting in accordance with EN 50160 and IEC 61000 and support you with our expert know-how. As the market leader in the field of mobile power quality devices, we can draw on a wide range of network analyzers with the appropriate accessories for our services.
Our Portfolio at a Glance
»PQSys« – Fixed Installed Power Quality Analysers & Fault Recorders
A reliable overview of supply quality and grid faults
Fully Automatic at Every Voltage Level
The built-in fault recorders and power quality devices PQI-DA smart, PQI-DE and PQI-D are the central components in systems handling all measurement tasks in low, medium and high-voltage networks. The analyzers can function as fault recorders with a scanning rate of up to 41 kHz, as power quality measurement devices to EN 50160 / IEC 61000-2-2/-4 or as power quality analyzers.
The power quality analyzers are ideal for monitoring specific quality standards and agreements between energy suppliers and customers. They also support the monitoring of new technologies such as photovoltaics, e-mobility, battery storage and heat pumps and offer reliable grid monitoring in the low-voltage range, including industrial applications.
All power quality analyzers from A. Eberle are characterized by the highest measurement accuracy of class A according to IEC 61000-4-30 Ed. 3. The standard specifies power quality parameters, measurement methods, time aggregation, accuracy and evaluation, thus guaranteeing reliable, reproducible and comparable measurement results.
Quick Comparison:
PQI-LV vs. PQI-DA smart vs. PQI-DE
Find the Right Power Quality Analyzer for Your Application.
PQI-LV
PQI-DA smart
PQI-DE
• Secondary substation
• Depth of the grid (cable-/light-/sub-distributors)
• Industrial power grids (machinery/processes & plants)
• Retrofits
Low-voltage
✔️
10.24 kHz / Optional 40,96 kHz (B1)✔️
✔️
2 kHz to 20 kHz according to IEC61000-4-7 via software option (B1)✔️
CCCI, SSH, HTTP(S)Modbus RTU & TCP (Standard)
✔️
IEC60870-5-104 (P1), IEC61850 (P2), Modbus Master (P3) MQTT*✔️
Radius, RBAC, URM, encryption✔️
1GB ~ 140 weeks with standard template❌
DIN-rail
130 x 90 x 58mm
L x W x HDirect
230 / 400 / 690VRogowski coils & current sensors
350mV input
❌
❌
❌
Optional
• PCC / Point of Common Coupling (IEC 61000-2-2)
• POC / Point of Connection (EN 50160)
• Secondary substation with increased requirements
• Industrial applications
Low-, medium- and high-voltage
✔️
10.24 kHz / Optional 40,96 kHz (B1)✔️
✔️
2 kHz to 20 kHz according to IEC61000-4-7 via software option (B1)✔️
CCCI, SSH, HTTP(S)Modbus RTU & TCP (Standard)
✔️
IEC60870-5-104 (P1), IEC61850 (P2), Modbus Master (P3) MQTT*✔️
Radius, RBAC, URM, encryption✔️
1GB ~ 140 weeks with standard template1.7 inches
DIN-rail,
Front panel installation using adapter
160 x 90 x 58mm
L x W x HDirect and transducer measurement
100 / 230 / 400 / 690V1A/5A measuring transformer (C30)
1A/5A protection transformer (C30)
Rogowski coils (C40)
Sensor technology (C44)
DC (C45)
2 / 2
❌
❌
✔️
• Substations
• Industrial applications
• Grid code compliance
• High-precision frequency measurements
• Residual Current Monitoring (RCM)
Low-, medium- and high-voltage
✔️
10.24 kHz / Optional 40.96 kHz (B1)✔️
✔️
2 kHz to 20 kHz according to IEC61000-4-7 via software option (B1)✔️
CCCI, SSH, HTTP(S)Modbus RTU & TCP (Standard)
✔️
IEC60870-5-104 (P1), IEC61850 (P2), Modbus Master (P3) MQTT*✔️
Radius, RBAC, URM, encryption✔️
1GB ~ 140 weeks with standard template5 inches
Front panel installation
144 x 144
144 x 144 x 90 mm
L x W x HDirect and transducer measurement
Small signal transducer (E3)
1A/5A measuring transformer (C30)
1A/5A protection transformer (C30)
Rogowski coils (C40)
Mini current clamps (C44)
DC (C45)
8 / 4
✔️
5th current feeder (30mA)✔️
PT100 / PT1000 / KTY✔️
News From the Product Group
PQSys – News
General Knowledge
Measuring the voltage drop
23. January 2025
The voltage drop is the difference between the voltage at the beginning and end of an electrical line. In an electrical network, the voltage can be reduced by the resistance and impedance of the lines,[…]
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Product innovation
Product Announcement: »PQI-LV« Released on 05.06.2024
22. January 2025
PQI-LV – cost-efficient class A power quality analyser for precise PQ monitoring in low voltage. Available to order now.[…]
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General Knowledge
Harmonics
17. September 2024
Harmonics are waves whose frequencies are an integer multiple higher or lower than those of the fundamental oscillations. They arise due to non-linear loads in the grid when the electrical voltage is distorted[…]
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Blogpost
International Partner Week 2024 – a Look Back
29. August 2024
Our International Partner Week 2024 – many old friends and new faces were our guests, it was a pleasure.[…]
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General Knowledge
Voltage Monitoring
1. July 2024
Find out everything you need to know about voltage monitoring in this article. What is voltage monitoring, why is voltage monitoring essential for both energy supply companies and industrial companies[…]
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General Knowledge
What Is Load Profile Measurement/Power Measurement?
25. June 2024
This article explains the definition and difference between load profile measurement (RLM), power measurement and measuring the standard load profile. These are important methods for accurately recording[…]
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General Knowledge
Residual Current
6. March 2024
In this article, you will learn about residual current measurement & residual current monitoring and why it is important to measure residual current.[…]
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General Knowledge
Power Quality
6. March 2024
Good power quality is characterized by the fact that the mains voltage actually arriving at the consumer matches the mains voltage promised by the utility company.[…]
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General Knowledge
Reactive Power – Definition, Calculation and Measurement
6. March 2024
The key role of reactive power in electrical engineering: definition, calculation, measurement and the differences to active power and apparent power. Find out how reactive power influences the efficiency[…]
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General Knowledge
What Is Apparent Power and How Is It Calculated?
6. March 2024
This article addresses the question of what apparent power is and how to calculate it. An understanding of apparent power is crucial for the correct dimensioning of inverters and therefore for the optimum[…]
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General Knowledge
Ready for the Smart Grid of the Future?
6. March 2024
All information about smart grids/intelligent power grids, the technology behind them, advantages, disadvantages, challenges and current distribution.[…]
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Product innovation
Product Announcement: »I-Sense« for Feeder Current Measurement in Future-Proof Secondary Substations Available as of 15/09/2023
16. October 2023
»I-Sense« Feeder Current Measurement for up to 16 feeders. Available to order now.[…]
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Product innovation
Product Discontinuation: Power Quality Analyser PQI-DA, as of 09.08.2023
9. August 2023
Power Quality Analyser PQI-DA is currently scheduled for product discontinuation.[…]
Read more
General Knowledge
Power Quality Analysis: Tips and Tricks II
28. April 2023
Useful tips & tricks for handling Power Quality measuring devices and typical user errors – now in our two-part article! This article provides further insights and practical tips and application examples[…]
Read more
General Knowledge
Power Quality Analysis: Tips and Tricks I
27. April 2023
Useful tips & tricks for handling Power Quality measuring devices and typical user errors – now in our two-part article! This article explains tips and tricks for performing power quality measurements.[…]
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Special Publication
Innovative & Economical “System Solutions” in the Age of Energy Grid Transformation
2. February 2023
The transformation of the energy industry from a centralized structure to a decentralized energy supply is creating complex energy networks with volatile load flows and changing load flow directions. Grid[…]
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Blogpost
DAKKS Calibration Report: PQI-DE & PQI-DA Smart With Sensational Results
11. August 2022
In the DAKKS calibration according to VDE-AR 4110 Annex F, our power quality analyzers PQI-DE & PQI-DA smart have achieved sensational accuracy values.[…]
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Special Publication
Measurement of Voltage Distortions in Industrial Grids With the PQ-Box 50
14. April 2022
It is important to find disturbances in the system in a fast and reliable way. This report shows an example for trouble shooting with the Power Quality analyzer PQ-Box 50. […]
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Info letter
Information Letter No. 24: Integration Guide for the Metering of a Power Plant According to the Requirements for Generators (2016/631) RfG
18. January 2022
Integration guide for the measurement of a power plant (EZA) according to VDE-AR 4110 and VDE-AR 4120.[…]
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Info letter
Info Letter No. 23: Direction of Harmonics Sources of Harmonics in the Power System
7. September 2021
Le sens du flux de puissance des harmoniques est déterminé par le signe de la puissance activ[…]
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