Generatoren Hochspannung
Generators

Electrical insulation materials for generators and rotating high voltage machines

Krempel can offer complete insulation systems of the highest level – for turbo generators in thermal power plants, for hydro generators in hydropower plants as well as for rotating machines of various types such as high-voltage motors, wind turbines and traction machines.

The electrical insulation system is key to the reliable functioning and long-term service life of electrical machines. If the insulation fails, this can have catastrophic consequences. You can always rely on Krempel electrical insulation materials. Even when under heavy strain and in adverse operating conditions, they function perfectly.

You’ll always have the right products on your side with Krempel’s reliable insulation technology, whether it’s system solutions for VPI (vacuum pressure impregnation) processes, or for resin rich technology.

Our solutions for high-voltage applications

  • Mica tapes for main and partial conductor insulation
  • Guide tapes as corona shielding for potential control
  • Prepregs for coil and rod reinforcement and winding insulation
  • Epoxy resin pastes for conductor smoothing
  • Covering tapes for the coil cover in the winding head area
  • Slot springs, slot wedges and other rigid materials for winding stabilisation
  • Fixing cords, fabric and banding tapes for winding head bonding

The extensive portfolio covers all voltage and power ranges and offers custom-fit insulation solutions both for generators in single rod production (Roebel bars) and for high-voltage machines in coil production.

Engineering confidence is our core competency, in other words, we not only supply standard materials for series production, modernisation or repair, we are also there to support you with custom-fit solutions, especially when it comes to new developments that require the innovative strength of an experienced team. And that’s something no one else can imitate in a hurry – you can rely on our 150 years of expertise in insulation technology.

    Generators in single rod production

    Roebel bar in slot

    Generatoren Einzelstabfertigung Roebelstab in Nut
    1 2 3

    Coil and Bar Consolidation

    • Multi-Pregreg-System with epoxy resin for
      insulation between parallel conductors,
      also for shortened process times (TRIPREG-STABIL)
    • Polyester longitudinal non-woven with epoxy resin for fixing
      the partial conductors on top of each other, also for shortened
      process times (PREPREG ELBD)

    Conductor Smoothening

    • Electrically conductive epoxy resin mastic (KREMPEL-ERKITT)
    • Electrically insulating epoxy resin mastic (KREMPEL-ISKIT) 

    Packing and Wedging

    KREMPEL Nutverschlussfedern

    Elektrisch isolierende Nutverschlussfedern zur Fixierung der Stäbe und Nutkeile

    Nutkeile

    • WACOSIT®
    • G-11, EPGC 
    • Magnetische Nutverschlusskeile 

    KREMPEL Nutseitenfedern

    Elektrisch leitfähige Nutseitenfedern zur seitlichen
    Fixierung und Kontaktierung der Generatorstäbe

    PREGNIT-R

    Elektrisch leitfähige Hartgewebe zur seitlichen
    Kontaktierung der Generatorstäbe

    Generators in single rod production

    Roebel bar

    Generatoren Einzelstabfertigung Röbelstab
    1 2 3 4

    Leiterisolierung

    • Mica Tapes 

    Coil and Bar Consolidation

    • Prepregs
    • Tripreg-stabil 

    Main Insulation

    • Mica Tapes (KREMICA.therm / KREMICA.por)
    • Conductive tapes 
    • Voltage gradation bands (Akasic 4b)

    Endabwicklungsdichtungen

    • Hyperseal V
    • Hyperseal M
    • KREM.seal

    High voltage machines in coil production

    HV coil in slot

    Generatoren Spulenfertigung HV Spule in Nut
    1

    Packen / Verkeilen für die Wicklung

    Nutverschluss - und Seitenfedern

    • Pregnit GGBE-N11
    • WACOSIT Schlitzkeile
    • Pregnit GGFE 2055 
    • Pregnit R 
    • Endkappen

    High voltage machines in coil production

    HV coil

    Generatoren Spulenfertigung HV Spule
    1 2 3

    Spulen- und Stabverfestigung

    • Multi-Pregreg-System with epoxy resin for
      insulation between parallel conductors,
      also for shortened process times (TRIPREG-STABIL)
    • Polyester longitudinal non-woven with epoxy resin for fixing the
      the partial conductors on top of each other, also for shortened
      process times (PREPREG ELBD)

    Main Insulation

    • Mica tapes for Resin-Rich technique
    • Mica tapes for Vacuum-Pressure Impregnation
    • Leitvliese als Außen- und Innenglimmschutz
    • Endenglimmschutz zur Potentialsteuerung (EGS Band)

    End Winding Sealing

    • Sealing tapes for Resin-Rich & VPI
    Platzhalter Mann 
    Contact me
    Leopold Bauer
    Key Account Manager
    Global Sales Energy

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