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(Ruhstrat) Eisenmann Thermal Solutions GmbH & Co. KG

Booth number: Z2.J36

About us

Providing Solutions is our Strength Ruhstrat is a German supplier of AC voltage stabilizers and voltage-dips/sag correction equipment. Our voltage stabilizing solutions provide our customers with the certainty that their systems, network and manufacturing processes always receive a stable voltage flow – free from fluctuations and dips/sag of the mains utility supply. Founded in 1888, we have decades of experience in voltage stabilizer technology. Ruhstrat offers the right voltage stabilizing solution from our range of standard and custom-build products for voltage fluctuations and dips/sag up to ± 40 %, power up to 2 MVA and a regulation speed up to < 5 ms.

Products and services

  • Magnetic voltage stabilizers
  • Transformer-type voltage stabilizers
  • NESSY – Network Stabilizing System for local networks
  • OLIVER – Online Voltage Regulation – Compensation of voltage dips
OLIVER - Online Voltage Regulation

OLIVER - Online Voltage Regulation

Voltage dips, voltage fluctuations and frequency deviations are on the rise due to the increasing proportion of renewable energy producers. The Oliver (Online Voltage Regulation) voltage optimisation system protects against overvoltage and undervoltage of up to ± 40%.

NESSY - Network Stabilizing System

NESSY - Network Stabilizing System

The network stabilizing system NESSY offers a solution for voltage stability problems in towns and industrial networks.

NESSY controls und stabilizes the supplied network voltage and ensures that it is held constantly at the level required by EN 50160 for optimal economical and electro-technical levels.

NESSY regulates the output voltage by employing and controlling step transformers with secondary sides serial in the low voltage.


(Ruhstrat) Eisenmann Thermal Solutions GmbH & Co. KG
Leinetal / Auf der Mauer 1
37120 Bovenden

Phone: +49 551 820830-0
Fax: +49 551 820830-50

Andreas Möbus
Vice President, Head of Business Segment Electrical Technology
Phone: +49 5 51 820 830-600

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