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Hydropower

WACKER has a strong expertise in hydro power since 1914. Attention is now also focusing on innovative concepts for harnessing tidal and wave power. Our technologically advanced products provide forward-looking solutions for industrial users in wave power plants and hydro power plants.

WACKER's in-depth expertise in hydropower dates back to 1914. Now, we are also focusing on innovative concepts for harnessing tidal and wave power. Our high-tech products provide pioneering solutions for industrial designers of wave-power and hydropower generators.

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In wave-power generators, NEXIPAL® can be used as an electroactive polymer to harvest energy from the sea. In this application, NEXIPAL® ensures continuous operation over millions of cycles. As a constituent of NEXIPAL ®, ELASTOSIL® can also serve on its own as a dielectric medium, return spring and carrier for electrodes. In this case, the electrodes are mounted by customers themselves. ELASTOSIL® Film is produced from addition-curing silicone rubber grades and is available in thicknesses as low as 10 micrometers.

Production takes place under clean room conditions and yields flawless, homogeneous films of extremely consistent thickness, and all contributing the positive properties of silicones.

Advantages of NEXIPAL® and ELASTOSIL ® Film

  • Continuous operation over millions of cycles
  • Constant permittivity
  • Good dielectric properties
  • High stretch recovery
  • Permanent elasticity
  • Thicknesses of individual permittivity layers between 10 and 400 micrometers
  • Outstanding precision of +/-5%
  • Flexibility at low temperatures
  • High heat resistance
Read more about our innovative silicone films

Product Recommendations

Products
Technical data
Product properties
Hardness Shore A Vulcanizate
ELASTOSIL® Film 2030 27[1] 27[1] Excellent dielectrical properties, Precise, Flexible at low (-40 °C) and high temperatures (+180 °C), Electrically insulating, Gas permeable
NEXIPAL® - - -
Legend
[1] Hardness Shore A | DIN ISO 48-4,  [] Suited,  [] Well suited,  [] Ideally suited 

ELASTOSIL® RTV are ready-to-use room-temperature curing silicone rubber grades, optimized for the production of hydropower generators.

ELASTOSIL® RTV are ready-to-use room temperature curing silicone rubber grades, optimal for sealing hydropower generators

Applications

  • Potting of stator slot exits
  • Elastic bonding of the coil windings
  • Bonding of insulation caps
  • Thermally conductive potting of stator coils

Benefits

  • Improved thermal management
  • Fire safety
  • Protection against moisture and environmental impact
  • Electrical insulation
  • Corona shielding and protection

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Viscosity, dynamic Tear strength Hardness Shore A Tensile strength Elongation at break Resistance Regulation Product Rheology Crosslinking Property Vulcanizate
ELASTOSIL® RT 607 A/B 15000 mPa·s[1] 15000 mPa·s[1] - - 55[4] 55[4] 3 N/mm²[6] 3 N/mm²[6] 100 %[8] 100 %[8] Heat resistant Flame retardant Flowable Two-component, Addition Curing -
ELASTOSIL® RT 622 A/B 18000.0 mPa·s[2] 18000.0 mPa·s[2] 30 N/mm[10] 30 N/mm[10] 27[5] 27[5] 6.5 N/mm²[7] 6.5 N/mm²[7] 550 %[9] 550 %[9] - - Flowable Two-component, Addition Curing -
ELASTOSIL® RT 628 A/B 80000 mPa·s[3] 80000 mPa·s[3] 12.5 N/mm[10] 12.5 N/mm[10] 54[4] 54[4] 3.2 N/mm²[6] 3.2 N/mm²[6] 220 %[8] 220 %[8] Heat resistant - Flowable Two-component, Addition Curing Electrically insulating
Legend
[1] Viscosity, dynamic | 23 °C | DIN EN ISO 3219,  [2] Viscosity, dynamic | 23 °C | DIN EN ISO 3219 | Spindle 4; 2,5 UpM; 23 °C,  [3] Viscosity, dynamic | 23 °C | DIN EN ISO 2555 | Brookfield measurement (component A: spindle 5 / 2.5 rpm; component B: spindle 1 / 2.5 rpm),  [4] Hardness Shore A | DIN ISO 48-4,  [5] Hardness Shore A | DIN 53505 / ISO 868,  [6] Tensile strength | ISO 37 type 1,  [7] Tensile strength | DIN 53504 S1 / ISO 37,  [8] Elongation at break | ISO 37 type 1,  [9] Elongation at break | DIN 53504 S1 / ISO 37,  [10] Tear strength | ASTM D 624 B,  [] Suited,  [] Well suited,  [] Ideally suited 

Additional Information

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Viscosity, dynamic Tear strength Hardness Shore A Tensile strength Elongation at break Resistance Regulation Product Rheology Crosslinking Property Vulcanizate
ELASTOSIL® RT 607 A/B 15000 mPa·s[1] 15000 mPa·s[1] - - 55[4] 55[4] 3 N/mm²[6] 3 N/mm²[6] 100 %[8] 100 %[8] Heat resistant Flame retardant Flowable Two-component, Addition Curing -
ELASTOSIL® RT 622 A/B 18000.0 mPa·s[2] 18000.0 mPa·s[2] 30 N/mm[10] 30 N/mm[10] 27[5] 27[5] 6.5 N/mm²[7] 6.5 N/mm²[7] 550 %[9] 550 %[9] - - Flowable Two-component, Addition Curing -
ELASTOSIL® RT 628 A/B 80000 mPa·s[3] 80000 mPa·s[3] 12.5 N/mm[10] 12.5 N/mm[10] 54[4] 54[4] 3.2 N/mm²[6] 3.2 N/mm²[6] 220 %[8] 220 %[8] Heat resistant - Flowable Two-component, Addition Curing Electrically insulating
NEXIPAL® - - - - - - - - - - - - - - -
Legend
[1] Viscosity, dynamic | 23 °C | DIN EN ISO 3219,  [2] Viscosity, dynamic | 23 °C | DIN EN ISO 3219 | Spindle 4; 2,5 UpM; 23 °C,  [3] Viscosity, dynamic | 23 °C | DIN EN ISO 2555 | Brookfield measurement (component A: spindle 5 / 2.5 rpm; component B: spindle 1 / 2.5 rpm),  [4] Hardness Shore A | DIN ISO 48-4,  [5] Hardness Shore A | DIN 53505 / ISO 868,  [6] Tensile strength | ISO 37 type 1,  [7] Tensile strength | DIN 53504 S1 / ISO 37,  [8] Elongation at break | ISO 37 type 1,  [9] Elongation at break | DIN 53504 S1 / ISO 37,  [10] Tear strength | ASTM D 624 B,  [] Suited,  [] Well suited,  [] Ideally suited