Our EOK transformer oil purification product line is the leading brand in oil purification technology. EOK oil purification plants provide you with decades of experience in the transformer maintenance sector all powered by German Engineering. The EOK Series is the benchmark in transformer oil degasification and transformer oil purification technology.

The HERING EOK-TORS transformer oil regeneration systems give you the best of transformer oil regeneration and purification in one high-performance system

The proper treatment of transformer insulating oil involves the regeneration, dehydration and degasification of the oil. The HERING EOK-TORS transformer oil regeneration systems perform all three tasks in the highest efficient and most effective manner. Using our transformer oil regeneration equipment provides you with the all the benefits of our best-in-class EOK oil purification technology and the added power of the TORS regeneration columns. All our systems are made in Germany and powered by German Engineering to provide you with the highest quality possible.

HERING Drying Series product line offers state-of-the-art technology to speed up your transformer manufacturing operations.

During the later life cycle of the transformer, not only drying the insulating oil extends the lifetime, but also drying the insulating material has a significant positive impact. For the latter, the HERING Drying Series – our product line of state-of-the-art vacuum transformer drying ovens – is your ideal choice.

HERING AMPS Adsorbent Mineral Polishing System has been created for customers that want a high-performance lube oil polishing treatment without using any chemicals or chemically activated substances, such as conventional bleaching clays. The AMPS re-refined oil polishing system is an ideal post-processing unit for oils that have been pre-treated by vacuum distillation or wipe-film evaporation. The key to the AMPS’ performance and environmental friendliness is the HERING PHÖNIX GREEN highly adsorbent mineral. This naturally occurring mineral has been enhanced by a physical process to lead to highest possible surface areas for maximum thermo-physical efficiency of the lube oil polishing process. HERING PHÖNIX GREEN has been specifically developed to replace conventional bleaching clays. It can be reactivated and reused up to 500 times in our HERING AMPS equipment before needing to be replaced. Our AMPS base oil polishing plant is a low operating cost and environmentally friendly alternative to other chemical re-refined oil polishing methods. The HERING AMPS rewards you with high quality group I and group II base oils.

The HERING TIDO® Series of online transformer insulation dry out systems dry and degasify oil filled transformers of all sizes while the transformers remain energized. TIDO® is the ideal long-term maintenance solution after an initial oil purification using HERING EOK® has been performed. This way the HERING TIDO® extracts moisture and dissolved gasses from the online transformer continuously without causing any downtime in the transformer’s operation. The HERING TIDO® online transformer drying and degassing system avoids equipment failures by stopping the underlying causes of transformer failure. The paper insulation of a transformer will degrade with time through various chemical processes leading to equipment failure & explosion risks.

HERING prides itself on the number of transformer treatment options that it offers its business partners. The ISODRY® Series is focused specifically on moisture removal, particularly from the paper insulation in the transformer core. The harmful effect of water on the transformer dielectric strength is generally well-known and appreciated and there are a number of solutions that address that. The ISODRY® Series, and its vacuum based complement, TIDO, reduce aging effects on the cellulose insulation by continuously removing water – unattended.