Measure. Regulate.
Across All Grids.

Shaping the Grid Infrastructure of Tomorrow – This Is Our Goal. With Our Future-Oriented Solutions, We Help Our Customers to Face Future Challenges.

Measure. Regulate.
Across All Grids.

Shaping the Grid Infrastructure of Tomorrow – This Is Our Goal. With Our Future-Oriented Solutions, We Help Our Customers to Face Future Challenges.

The Right Solution for All Voltage Levels

Nuclear power plant

REGSys®
Monitor. Register. Control.
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
REG-DA
Regulate, monitor, register, control
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

High voltage line

EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
EOR-1DS
The earth fault and short-circuit indicator for in-depth location across the network
to the product

Pinwheels

PQI-DA smart
The Power Quality Allrounder
to the product
REG-DA
Regulate, monitor, register, control
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
PQ-Box 200
The mobile tool for the expert
to the product

Photovoltaic park

EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
REG-DA
Regulate, monitor, register, control
to the product
LVRSys®
Low Voltage Regulation System
to the product
EOR-1DS
The earth fault and short-circuit indicator for in-depth location across the network
to the product

Substation

REG-DP(A)
The arc suppression coil regulator in an IP54 housing
to the product
Power feed
Solutions for different network topologies
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
REGSys®
Monitor. Register. Control.
to the product
PQ-Box 200
The mobile tool for the expert
to the product

Offshore wind farm

EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

Charging station

PQ-Box 150
The mobile Power Quality Allrounder
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQ-Box 50
The Universal Network Analyser
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

Transformer station compact

EOR-1DS
The economical earth fault & short-circuit indicator for the future-proof secondary substations
to the product
EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQI-LV
Enhancing Transparency in the Low-Voltage Grid
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product

Hydroelectric power plant

REGSys®
Monitor. Register. Control.
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

Transformer station

EOR-1DS
The economical earth fault & short-circuit indicator for the future-proof secondary substations
to the product
EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQ-Box 50
The Universal Network Analyser
to the product

Industrial factory

PQI-LV
Enhancing Transparency in the Low-Voltage Grid
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
REG-DA
Regulate, monitor, register, control
to the product
LVRSys®
Low Voltage Regulation System
to the product
REG-DP(A)
The arc suppression coil regulator in an IP54 housing
to the product
Power feed
Solutions for different network topologies
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product

Energy saving house

PQ-Box 200
The mobile tool for the expert
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 50
The Universal Network Analyser
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

E-Mobility

PQ-Box 50
The Universal Network Analyser
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
PQ-Box 200
The mobile tool for the expert
to the product

Voltage regulation

Regulation, supervision and monitoring of step transformers in medium and high voltage networks

Low Voltage Regulation

String control that can even regulate overvoltages within 15 to 25 ms.

Power Quality

Powerful network and frequency analyzers, power meters and transient recorders.

Short-Circuit and Earth Fault Indicators

The combination of different location methods enables reliable fault location.

Earth Fault Compensation & Current Injection

Control of Petersen coils that can be continuously adjusted under load.

Product Portfolio

The Right Device for Every Application

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Our Product
Portfolio at a Glance

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Product News

Our Latest Product Developments

EOR-1DS

The Economical Earth Fault & Short-Circuit Indicator for Analog Secondary Substations

The »EOR-1DS« is a compact, combined short-circuit and earth fault location indicator that offers all essential location methods. The device was specially developed as a cost-effective alternative to comparable solutions on the market.

Lerarn more

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.

Learn More

PQI-LV

Enhancing Transparency in the Low-Voltage Grid

The PQI-LV is a cost-effective class A power quality analyzer & fault recorder in accordance with IEC 61000-4-30 Edition 3 and has been developed especially for low-voltage monitoring. It is characterized by its compact design, high-quality measurement technology and simple installation thanks to sensor technologies such as Rogowski coils and current sensors.

Learn More

A. Eberle knowledge database

Application examples, webinars, training videos – everything related to our products and their use.

to our knowledge base

Clarity, Openness and Fairness

This Is What A. Eberle Stands For

With our high-quality technical solutions, we offer security and quality of supply for the benefit of all. With our values of CLARITY, OPENNESS and FAIRNESS, we stand for a humane corporate culture and make our contribution to developing a fair society.

Current News

First »LVRSys® – Low-Voltage Regulation« System in South Africa

We are excited to share another milestone in grid stability and energy efficiency: the first »LVRSys®« – low-voltage regulation system in south africa has been successfully commissioned!

Awarded Again: A. Eberle Is Among the Top 100 Most Innovative Medium-Sized Companies in Germany

A. Eberle is once again one of the 100 most innovational medium-sized companies in Germany in 2025. This award recognises our commitment to pioneering solutions.

PQ-Box User Training in Başiskele (Turkey) With Our Partner GENETEK Enerji Sistemleri Ltd.

In August, we held a training course with our partner GENETEK Enerji Sistemleri Ltd for our portable PQ network analyzers in Turkey.

Tailor-Made Solutions

Every product has specific requirements which we can fulfil thanks to our long years of experience in the sector.

Energy for the Future

We support our customers in developing network infrastructure and combining reliability with economy.

The Customer in Focus

Identifying customer needs at an early stage and incorporating them into innovative devices is one of our strengths.

Special Publications

Application Examples of Our Products

Renewable Energy Solutions (RES) – Pilot Project in South Africa for Efficient Voltage Stabilisation with »LVRSys®«

This application report shows the successful use of the »LVRSys®« low voltage regulation system in the Siemens data centre in Midrand, South Africa. Read here how »LVRSys®« reliably stabilises the voltage in critical infrastructure.

Experimental Validation of a Low-Voltage Regulator Model – Case Study of a Maltese Low-Voltage Grid

This application report addresses the integration of the »LVRSys® Low-Voltage Regulation System« into the low-voltage grid in Malta.

Cost Efficient Management of Digital Secondary Substations: Earth Fault Indicator EOR-3DS as Digitisation Unit for Secondary Substations

Digital secondary substations are becoming a key element for distribution system operators in terms of automation, monitoring, and efficient operations of their networks. Read this technical report about the EOR-3DS in its role as digitisation unit for secondary substations.

Ferrari´s Meter vs. Electronic Meter

This technical report analyzes a power measurement at a large industrial customer. The customer records very high currents and fifth harmonic voltages during production time, which leads to poor voltage quality.