LVRSys® provides local low voltage regulation for recurring overvoltage and undervoltage in distribution grids. It supports network operators in maintaining permissible voltage levels without immediately reinforcing the affected feeder.
Typical applications:
- Limiting recurring overvoltages in circuits with high PV feed-in
- Reducing undervoltages on long cables or in weak sections of the grid
- Stabilising the voltage during peak loads caused by charging infrastructure or heat pumps
- Maintaining permissible voltage levels when new generation or electrical loads are connected
LVRSys® is suitable if:
- Recurring overvoltage or undervoltage occurs in a specific low-voltage feeder
- Local voltage regulation is required to maintain the permissible voltage range
- Immediate grid reinforcement would require considerable time or investment
- Voltage stability must be improved near a critical feeder section or transformer station
LVRSys® - Low Voltage Regulation as an Alternative to Grid Reinforcement
Easy to Install, Flexible and Low-Maintenance
Application Areas
LVRSys®
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.
Low Voltage Regulation
Local Voltage Stabilisation for PV, EV Charging and Heat Pumps
LVRSys® is a low-voltage regulation system for stabilising voltage in grids affected by PV feed-in, EV charging, heat pumps and long feeders. It provides a local and flexible alternative to costly and time-consuming grid reinforcement.
Depending on the grid situation, LVRSys® can regulate an individual feeder or be installed at the local transformer station or secondary substation to support the wider low-voltage grid.
FAQ - Frequently Asked Questions About Low Voltage Regulation
What is low voltage regulation?
Low voltage regulation is the controlled stabilisation of voltage in a low-voltage network. It keeps voltage at customer connection points within the permissible range when feed-in or load conditions change.
When is a low voltage regulator needed?
A low voltage regulator is useful when PV systems, EV charging, heat pumps or long feeders cause recurring overvoltage or undervoltage in specific sections of the low-voltage grid.
How does LVRSys® work?
LVRSys® regulates voltage locally in the affected feeder section. Instead of acting only centrally, it is installed where the voltage problem actually occurs and compensates deviations directly in the grid.
Where can LVRSys® be installed?
LVRSys® can be installed in low-voltage feeders, near critical line sections or at the local transformer station / secondary substation, depending on the grid situation and regulation objective.
What problems can low voltage regulation solve?
Low voltage regulation helps solve local overvoltage, undervoltage, voltage drops in long feeders and voltage deviations caused by decentralised generation or new electrical loads.
Is LVRSys® an alternative to grid expansion?
Yes. In many cases, LVRSys® is a practical and economical alternative when operators need to stabilise voltage quickly without immediately expanding cables or reinforcing the grid.
Which applications are typical for LVRSys®?
Typical applications include residential areas with high PV penetration, feeder sections with EV charging and heat pumps, industrial facilities and rural networks with weak voltage conditions.
What is the benefit for utilities and network operators?
Utilities and network operators gain a flexible way to improve voltage quality, reduce complaint risks, support additional electrification and postpone or minimise expensive grid reinforcement.
News From the Product Group
LVRSys® - News
Blogpost
A. Eberle named one of the TOP 100 Innovators for 2026
22. July 2026
As part of the 2026 TOP 100 Awards, we had the honour of receiving a special accolade in Heidelberg last week – presented in person by Christian Wulff, former Federal President and mentor of the TOP[...]
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Blogpost
International Partner Week 2026 - Exchange, knowledge transfer and collaboration in Nuremberg
1. June 2026
We were delighted to welcome our international partners to Partner Week 2026. The chance to chat in person, seeing familiar faces and making new acquaintances made the week a special one for us.[...]
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Blogpost
A. Eberle and Bregal Unternehmerkapital enter into a growth partnership
14. April 2026
A. Eberle and Bregal enter into a growth partnership. The partnership with BU is intended to accelerate A. Eberle’s international expansion, innovation and technological advancement.[...]
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Webinar
»LVRSys®« Webinar: The Solution for Voltage Stability Problems - Integrate PV, Electromobility & Heat Pumps
19. March 2026
Webinar recording from 2026-03-19: »LVRSys®The Solution for Voltage Stability Problems - Integrate PV, Electromobility & Heat Pumps[...]
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Special Publication
Low-Voltage Line Voltage Regulators for Stable Low-Voltage Grids | Practical example: »LVRSys®« at »ovag Netz GmbH«
19. December 2025
A distribution voltage regulator stabilizes LV feeders locally where PV and load peaks cause deviations. This practical example from ovag Netz shows how LVRSys® supports fast, measurable voltage control[...]
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Special Publication
LVRSys® Voltage Regulation in Low-Voltage Networks - Solving Pv-Related Overvoltage Issues
4. December 2025
The LVRSys® low voltage regulation system stabilizes voltage in PV-dominated low-voltage networks, preventing EN 50160 violations and avoiding expensive grid reinforcement.[...]
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Webinar
»Cyber Security« Webinar: A Challenge for European Energy Companies
3. December 2025
Webinar recording from 2025-11-26: »Cyber Security« - A Challenge for European Energy Companies[...]
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Blogpost
A. Eberle at the Schwabach City Run 2025
24. November 2025
A. Eberle was represented by 37 participants at the 2025 Schwabach City Run, setting a new internal record for participation. Particularly noteworthy is Benjamin Rentsch's first place in the M 35 40 age[...]
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Special Publication
LVRSys®: It's All About the Right Voltage
7. August 2025
Summary Stable voltage quality is becoming increasingly important in modern distribution grids. Due to the growing feed-in of renewable energies […][...]
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General Knowledge
Power in Multiphase Systems
7. August 2025
This technical report highlights the special features of power transmission in three-phase systems and offers valuable insights into the optimisation and analysis of modern power grids.[...]
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Blogpost
Visit From the Rudolf Diesel Technical School at A. Eberle
15. July 2025
We were happy to welcome you, Rudolf-Diesel-Fachschule! Yesterday, we had the pleasure of welcoming two classes of future electrical engineering technicians from the Rudolf-Diesel-Fachschule Nürnberg[...]
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Blogpost
TOP 100 Awards 2025: Innovation for the Energy Future
15. July 2025
💡 As part of the TOP 100 Awards 2025, we were honored to receive a special recognition last week in Mainz – personally presented by TV host and science journalist Ranga Yogeshwar.[...]
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Blogpost
University Excursion: Pentecost Excursion of the Friedrich-Alexander-University Erlangen-Nuremberg (FAU)
14. July 2025
As a company dedicated to innovation, education, and the energy transition, we are pleased to have once again supported the Whitsun excursion of Friedrich-Alexander University Erlangen-Nuremberg (FAU)[...]
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Blogpost
Further Growth at A. Eberle
14. July 2025
Welcome to the team! We welcome our new colleagues at A. Eberle.[...]
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General Knowledge
Voltage Stabilisation
7. July 2025
In this article, you will learn why voltage stabilisation in high, medium and low-voltage grids plays a central role in safe and efficient grid operation. You will learn the basics of ‘voltage stabilisation’[...]
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Webinar
»LVRSys®« Webinar: The Solution for Voltage Stability Problems
29. April 2025
Webinar recording from 2025-03-19: »LVRSys® - The Solution for Voltage Stability Problems«. [...]
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Special Publication
Renewable Energy Solutions (RES) - Pilot Project in South Africa for Efficient Voltage Stabilisation With »LVRSys®«
11. April 2025
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[...]
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Blogpost
First »LVRSys® - Low-Voltage Regulation« System in South Africa
2. April 2025
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![...]
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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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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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