Go to worldwide contacts

    A clean case – oil treatment.

    Carrying out targeted oil treatments (oil replacement or oil filtering) and professional drying of transformer oil or solid insulation materials based on the conditions of use are recommended to prevent operating problems and to extend service life. Ask us for an individualized quotation.


    Transformer oil processing

    • Removal of particles, moisture and gasses from the transformer oil
    • Vacuum filling of transformers
    • Hot oil circulation

    Mobile oil-filtration unit

    • Oil filtering by our mobile unit during service work on the on-load tap-changer.
    • Water and particles are removed
    • No delivery, disposal or storage of the oil is required
    • Automatic compliance with the German Water Resources Act (WHG)

    EXPIOTECH. Moisture management for transformers.

    Optimal drying, thanks to smart drying

    Our on-line transformer drying service enables controlled drying of the transformer. Unlike conventional drying processes, our Smart Drying System does not require the transformer to be shut off. The major advantage here is that the system‘s operating costs are very low and there is no need for heavy equipment. This means that overall drying costs are about 50% lower than for conventional processes.

    Maximum operational reliability

    The drying process can be monitored in real time via a remote connection. Should any abnormal condition occur, an automatic notification is sent via text message or e-mail. The drying process can be remotely interrupted, stopped or restarted at any time.

    • No or minimal transformer downtime
      • Connecting and filter exchanging can be done most of the time without outage
      • Transformer remains energized throughout the drying process
    • Low operating expenses
      • No heavy machinery: easy to transport, operate and maintain
      • Once installed, the system operates unattended (remotely monitored and controlled)
    • Virtually no side-effects
      • No removal of dissolved gas (e.g. no effect on DGA)
      • No modification of oil properties, e.g. aromatic content, oxidation inhibitors
      • No negative ef ect on paper condition