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POWERSIL®

Extra Safety in the Transmission Industry

POWERSIL® from WACKER is a portfolio of specialty silicones for power transmission and distribution. It also includes silicone fluids for transformers, and specialty silicone pastes.

All POWERSIL® products meet the requisite product safety, quality and reliability demands imposed by the various applications, and are notable for their outstanding property profiles. POWERSIL® rubber grades confer lasting water repellency, resistance to leakage currents and erosion, and good low-temperature flexibility. This makes them ideal for harsh climates found in coastal and desert regions.

POWERSIL® silicone rubber grades and POWERSIL® insulator coatings are 1- and 2-pack silicone compounds. The rubbers cure at either ambient or elevated temperature in accordance with how they are processed. Conventional methods are employed for this, i.e. spraying (silicone coatings), compression molding, injection molding, low-pressure mold filling (LPMF), and extrusion. The products are used for making:

  • Insulators
  • Surge arresters and bushings
  • Coupling sleeves, cable terminals and connectors

POWERSIL® products are supplied in different classes that offer a full range of properties for all kinds of applications:

HTV

  • Broad product range for various processing technologies, such as injection molding and extrusion
  • Outstanding electrical insulation is a basic property. Several grades have been modified to provide electrical conductivity
  • Huge selection of modification options with regard to curing process, color and other properties

LSR

  • Comprehensive product portfolio, e.g. including electrically conducting grades
  • Exceptional mechanical properties
  • High potential for new developments and modifications

RTV-1 (especially coatings)

  • Hydrophobic coatings, with transfer of hydrophobic properties to adjacent layers of grime
  • Adhesion to most common substrates

RTV-2 (especially cable accessories)

  • Good electrical properties
  • Good mechanical properties
  • Simple production technology

POWERSIL® transformer fluid is a highly pure liquid with excellent dielectric properties, very good long-term thermal stability and exceptionally high ignition point. POWERSIL® Fluid is used as a cooling and dielectric fluid in transformers.

POWERSIL® Paste AP combines the excellent dielectric properties of a silicone paste with outstanding lubrication. It also causes very little swelling in contact with silicone elastomers. The pastes serve as slip-on aids for cable accessories.

Product Recommendations

Products
Technical data
Product properties
Appearance Hardness Shore A Tensile strength Elongation at break Tear strength Compression Set Penetration Resistance Regulation Product Rheology Specific Features
POWERSIL® 310 MH light gray, dark gray light gray, dark gray 70[1] 70[1] 5.0 N/mm²[2] 5.0 N/mm²[2] 200 %[3] 200 %[3] 11 N/mm[4] 11 N/mm[4] - - - - - - - High LOI, Resistant to tracking and erosion, Excellent hydrophobicity behavior
POWERSIL® 3100 MH light gray light gray 70[1] 70[1] 4.5 N/mm²[2] 4.5 N/mm²[2] 350 %[3] 350 %[3] 20 N/mm[4] 20 N/mm[4] - - - - - - - Two-component, Resistant to tracking and erosion, Excellent hydrophobicity behavior
POWERSIL® 3500 MH red, light grey red, light grey 45[1] 45[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 850 %[3] 850 %[3] 30 N/mm[4] 30 N/mm[4] 20 %[5] 20 %[5] - - - - - Resistant to tracking and erosion, Addition Curing
POWERSIL® 352 MH oyster white, tomato red oyster white, tomato red 40[1] 40[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 800 %[3] 800 %[3] 30 N/mm[4] 30 N/mm[4] - - - - - - - Resistant to tracking and erosion
POWERSIL® 3525 MH pearl orange, blue grey pearl orange, blue grey 23[1] 23[1] 9.5 N/mm²[2] 9.5 N/mm²[2] 1100 %[3] 1100 %[3] 30 N/mm[4] 30 N/mm[4] - - - - - - - Resistant to tracking and erosion, Addition Curing
POWERSIL® 354 MH light grey light grey 45[1] 45[1] 8.0 N/mm²[2] 8.0 N/mm²[2] 550 %[3] 550 %[3] 17 N/mm[4] 17 N/mm[4] - - - - - - - Resistant to tracking and erosion
POWERSIL® 402 A/B - - - - - - - - - - - - - - - - - -
POWERSIL® 415 MH black black 41[1] 41[1] 3.0 N/mm²[2] 3.0 N/mm²[2] 470 %[3] 470 %[3] 25 N/mm[4] 25 N/mm[4] - - - - - - - High dielectric permittivity
POWERSIL® 440 MH black black 42[1] 42[1] 7.5 N/mm²[2] 7.5 N/mm²[2] 500 %[3] 500 %[3] 12 N/mm[4] 12 N/mm[4] - - - - - - - Electrically conductive
POWERSIL® 466 A/B black black 38[1] 38[1] 7.0 N/mm²[2] 7.0 N/mm²[2] 650 %[3] 650 %[3] 28 N/mm[4] 28 N/mm[4] 11 %[6] 11 %[6] - - - - - Cold-shrinkable, Electrically conductive
POWERSIL® 466 LV A/B black black 32[1] 32[1] 7.0 N/mm²[2] 7.0 N/mm²[2] 650 %[3] 650 %[3] 20 N/mm[4] 20 N/mm[4] 11 %[6] 11 %[6] - - - - - Cold-shrinkable, Electrically conductive, Low viscosity
POWERSIL® 567 - - 45[1] 45[1] 3.0 N/mm²[2] 3.0 N/mm²[2] 250 %[3] 250 %[3] 9.0 N/mm[4] 9.0 N/mm[4] - - - - - - - -
POWERSIL® 577 PLUS - - - - - - - - - - - - - - - Solvent-free - -
POWERSIL® 590 - - - - - - - - - - - - - - - - Flowable -
POWERSIL® 600 A/B - - 30[1] 30[1] 8.0 N/mm²[2] 8.0 N/mm²[2] 500 %[3] 500 %[3] 22 N/mm[4] 22 N/mm[4] - - - - - - - -
POWERSIL® 730 A/B - - 35[1] 35[1] 8.0 N/mm²[2] 8.0 N/mm²[2] 600 %[3] 600 %[3] 26 N/mm[4] 26 N/mm[4] - - - - - - - Resistant to tracking and erosion
POWERSIL® 732 CS A/B - - 33[1] 33[1] 9.0 N/mm²[2] 9.0 N/mm²[2] 750 %[3] 750 %[3] 35 N/mm[4] 35 N/mm[4] - - - - - - - Cold-shrinkable, Resistant to tracking and erosion
POWERSIL® 735 LIGHTGRAY A/B - - 39[1] 39[1] 8.0 N/mm²[2] 8.0 N/mm²[2] 500 %[3] 500 %[3] 30 N/mm[4] 30 N/mm[4] - - - - - - - Resistant to tracking and erosion
POWERSIL® 740 DARK GRAY A/B - - 40[1] 40[1] 9.8 N/mm²[2] 9.8 N/mm²[2] 650 %[3] 650 %[3] 35 N/mm[4] 35 N/mm[4] - - - - - - - Resistant to tracking and erosion
POWERSIL® 740 LIGHTGRAY A/B - - 40[1] 40[1] 9.8 N/mm²[2] 9.8 N/mm²[2] 650 %[3] 650 %[3] 35 N/mm[4] 35 N/mm[4] - - - - - - - Resistant to tracking and erosion
POWERSIL® 79032 - - - - - - - - - - - - - - - - - -
POWERSIL® FLUID TR 50 - - - - - - - - - - - - - - - - - High fire point, High flash point
POWERSIL® GEL A/B - - - - - - - - - - - - 300 1/10mm[7] 300 1/10mm[7] - - - -
POWERSIL® GEL C 670 A/B - - - - - - - - - - - - 220 1/10mm[7] 220 1/10mm[7] - - - -
POWERSIL® GEL FC A/B - - - - - - - - - - - - 180 1/10mm[7] 180 1/10mm[7] - - - -
POWERSIL® INSULATOR FINISH - - - - 1.4 N/mm²[2] 1.4 N/mm²[2] 500 %[3] 500 %[3] 5.0 N/mm[4] 5.0 N/mm[4] - - - - Resistant to tracking and erosion - Self-levelling -
POWERSIL® N 553 DARKGREY - - 60[1] 60[1] 3.0 N/mm²[2] 3.0 N/mm²[2] 100 %[3] 100 %[3] 9.0 N/mm[4] 9.0 N/mm[4] - - - - - - - -
POWERSIL® XLR® 630 A/B - - 35[1] 35[1] 7.0 N/mm²[2] 7.0 N/mm²[2] 450 %[3] 450 %[3] 25 N/mm[4] 25 N/mm[4] - - - - - - - Resistant to tracking and erosion, Low viscosity
WACKER® PASTE P 12 - - - - - - - - - - - - - - - - - -
WACKER® SILICONE PASTE P 250 - - - - - - - - - - - - - - - - - Lubricant
Legend
[1] Hardness Shore A | DIN ISO 48-4,  [2] Tensile strength | ISO 37 type 1,  [3] Elongation at break | ISO 37 type 1,  [4] Tear strength | ASTM D 624 B,  [5] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 4 h / 200 °C,  [6] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 6 h / 200 °C,  [7] Penetration (Hardness) | DIN ISO 2137 | 150g cone / 60s penetration time