Transformer Insulation Components – Casein Glue
- White glue (Elmer’s glue) made from casein, the nutrient protein in milk.
- The casein is separated from milk by processes called coagulation and precipitation.
- A water based glue
- It allows the diffusion of moisture and oil impregnation
- Used in high voltage applications
- For use in areas with high dielectric stress
- Available in tins of 33kg
- Safety data sheet available on request
- Related Products
VOTAFILM ® 2646
VOTAFILM ® 2646 is a special thermal PET-film, coated with a thin silicone coating on both sides. VOTAFILM® 2646 has high tensile strength and edge tear resistance and shows excellent separation properties, is easy removable, without residues. VOTAFILM® 2646 has a low shrinkage rate at up to 180 °C.
VOTAFILM ® 2646 is used as release film in the curing process of thermosetting resins. Due to the good thermal resistance and separation properties VOTAFILM ® 2646 is suitable up to 180 °C. It can be a substitute PTFE-film up to 180 °C in a very economical manner. If VOTAFILM ® 2646 is exposed long time to Epoxy Anhydride resin, release properties may alter.
Format Rolls maximum width 1000 mm Tape 40 mm width
VOTAFILM ® 2646 can be stored 2 years under normal conditions (20 °C; 50% humidity)
Covered Wire Products – Application Guide
Products Types of Insulation Temp Rating °C Size Range Insulation Build Grade Properties of Insulation Main Applications Specifications Paper Covered/ Lapped Wire Multi Lapped Manila/ Kraft Paper or Crepe Covering Butt Lap, Half lap wound and Multi layers 105-A 6.4 to 0.50 mm 0.05 to 0.125 mm Kraft Paper thickness or as required High dielectric strength when oil immersed. Uniform radial Separation, Mechanical resistance Distribution transformers, ESP and welding transformers IS: 7404 Pt-1, BS: 4653: Pt-2, BS: 6811 Section 8,1 IEC: 317-27 Paper Covered/ Lapped Strips Multi Lapped Manila/ Kraft Paper or Crepe Covering Butt Lap, Half lap wound and Multi layers 105-A upto 100 Sq. mm 0.05 to 0.125 mm Kraft Paper thickness or as required High dielectric strength when oil immersed. Uniform radial Separation, Mechanical resistance Oil filled distribution and power transformers. IS: 7404 Pt-2, BS: 4653 Pt-2, IEC: 317-27 Nomex (Meta Aramid paper) Covered/Lapped Wires Aromatic Polyamide Fibre Based Paper Covering Butt Lap, half Lap, Multi layer 220-C 6.4 to 0.50 mm 0.05 to 0.125 mm High mechanical and electrical strength. Lapped construction gives uniform covering. Exceptional thermal rating. High performance coils. Dry type and resin cast transformers. IS: 11174, BS: 4653 Pt-2, IEC: 851
CALMICA-FLEX ® SI 2726
CALMICA-FLEX ® SI 2726 consists of mica paper with aramide fibres impregnated with silicone resin and a glass cloth as carrier. The insulation with with CALMICA-FLEX ® SI 2726 shows good taping properties and very high thermal stability. It remains flexible after heat treatment. CALMICA-FLEX ® SI 2726 is compatible with solvent free silicon impregnating resins.
CALMICA-FLEX ® SI 2726 is used e.g. for endwinding insulation in high voltage machines of thermal class 180 (H). For copper strand conductor and main insulation of rotor windings CALMICA-FLEX ® SI 2726 is used as well as for pole coils and connections in traction motors up to thermal class 200 (C). CALMICA-FLEX ® SI 2726 can be processed with or without an impregnation process with silicone resin
Format Rolls maximum width 1000 mm Tapes from 10 mm width upward
Minimum 12 months at 20 °C
Minimum 24 months at 5 °C