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Transmission & Distribution Industry

WACKER was the first silicones producer on the market to offer a full range of electrically insulating and conducting silicone rubbers for transmission and distribution. Today, POWERSIL® is a world-leading brand that is synonymous with innovative, economical and reliable products.

POWERSIL® silicones are high-end silicone elastomers that range from low-viscosity to ready-to-use solid rubbers. They are used to produce long-rod insulators/surge arresters and hollow insulators as well as to coat insulators, especially glass and ceramic insulators.

Benefits:

  • Good mechanical properties
  • Excellent dielectric properties
  • Ready to use
  • Two-part system
  • Extremely low-viscosity liquid rubber
  • Excellent processing in appropriate mixing and metering systems
  • High tracking and erosion resistance

Benefits of POWERSIL® in long-rod insulators:

  • Long service life due to excellent hydrophobic properties and resistance to heat, UV and ozone
  • Easy to use due to low weight
  • Excellent toughness and impact strength due to flexibility
  • High flashover resistance due to hydrophobic surface
  • Low maintenance costs due to hydrophobicity transfer

Benefits of POWERSIL® in hollow insulators:

  • Excellent process safety and flexibility due to low-pressure molding process
  • Easy handling due to low weight (80 % lighter than porcelain insulators)
  • Excellent toughness and impact strength due to flexibility
  • High flashover resistance due to hydrophobic surface

Benefits of POWERSIL® as insulator coating:

  • High operational reliability due to excellent hydrophobic properties
  • Cost efficiency due to scope for retrofitting existing installations
  • Extended service life due to silicone coating (10 years and longer)

Insulators:

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Appearance Hardness Shore A Tensile strength Viscosity, dynamic Elongation at break Tear strength Penetration Resistance Product Rheology Specific Features
POWERSIL® 190 MH light grey light grey 75[1] 75[1] 6.8 N/mm²[2] 6.8 N/mm²[2] - - 250 %[3] 250 %[3] 18 N/mm[4] 18 N/mm[4] - - - - Resistant to tracking and erosion, Excellent hydrophobicity behavior
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® GEL A/B - - - - - - 1000 mPa·s[5] 1000 mPa·s[5] - - - - 300 1/10mm[8] 300 1/10mm[8] - - -
POWERSIL® GEL C 670 A/B - - - - - - 3000 mPa·s[5] 3000 mPa·s[5] - - - - 220 1/10mm[8] 220 1/10mm[8] - - -
POWERSIL® GEL FC A/B - - - - - - 1000 mPa·s[5] 1000 mPa·s[5] - - - - 180 1/10mm[8] 180 1/10mm[8] - - -
POWERSIL® INSULATOR FINISH - - - - 1.4 N/mm²[2] 1.4 N/mm²[2] 200000 mPa·s[6] 200000 mPa·s[6] 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] 4000 mPa·s[7] 4000 mPa·s[7] 100 %[3] 100 %[3] 9.0 N/mm[4] 9.0 N/mm[4] - - - - -
POWERSIL® XLR® 630 A/B light gray light gray 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
SLM 26758 - - 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] - - - - -
WACKER® PRIMER G 790 TOLUENE FREE - - - - - - - - - - - - - - - - Adhesion promoting primer, Solvent-based
WACKER® PRIMER G 791 A/B - - - - - - - - - - - - - - - - Adhesion promoting primer, Solvent-based
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] Viscosity, dynamic (10 s⁻¹) | DIN EN ISO 3219,  [6] Viscosity, dynamic | DIN EN ISO 3219,  [7] Viscosity, dynamic | 25 °C | DIN EN ISO 3219,  [8] Penetration (Hardness) | DIN ISO 2137 | 150g cone / 60s penetration time,  [] Suited,  [] Well suited,  [] Ideally suited 

Arresters:

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Appearance Hardness Shore A Tensile strength Viscosity, dynamic Elongation at break Tear strength Compression Set 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® 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® 600 A/B - - 30[1] 30[1] 8.0 N/mm²[2] 8.0 N/mm²[2] 10000 mPa·s[6] 10000 mPa·s[6] 500 %[3] 500 %[3] 22 N/mm[4] 22 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® PRIMER G 790 TOLUENE FREE - - - - - - - - - - - - - - Adhesion promoting primer, Solvent-based
WACKER® PRIMER G 791 A/B - - - - - - - - - - - - - - Adhesion promoting primer, Solvent-based
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] Viscosity, dynamic of mix (10 s⁻¹) | DIN EN ISO 3219,  [] Suited,  [] Well suited,  [] Ideally suited 

Insulator coatings:

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Tear strength Viscosity, dynamic Hardness Shore A Tensile strength Elongation at break Regulation Product Rheology
POWERSIL® 567 9.0 N/mm[1] 9.0 N/mm[1] 1400 mPa·s[2] 1400 mPa·s[2] 45[4] 45[4] 3.0 N/mm²[5] 3.0 N/mm²[5] 250 %[6] 250 %[6] - -
POWERSIL® 577 PLUS - - 350000 mPa·s[3] 350000 mPa·s[3] - - - - - - Solvent-free -
POWERSIL® 590 - - - - - - - - - - - Flowable
POWERSIL® 79032 - - - - - - - - - - - -
POWERSIL® N 552 LIGHTGREY 9.0 N/mm[1] 9.0 N/mm[1] - - 68[4] 68[4] 3.0[5] 3.0[5] 100 %[6] 100 %[6] - -
POWERSIL® N 552 WHITE 9.0 N/mm[1] 9.0 N/mm[1] - - 68[4] 68[4] 3.0[5] 3.0[5] 100 %[6] 100 %[6] - -
Legend
[1] Tear strength | ASTM D 624 B,  [2] Viscosity, dynamic (10 s⁻¹) | 23 °C | DIN EN ISO 3219,  [3] Viscosity, dynamic at 0.1 % deformation | DIN 54458,  [4] Hardness Shore A | DIN ISO 48-4,  [5] Tensile strength | ISO 37 type 1,  [6] Elongation at break | ISO 37 type 1,  [] Suited,  [] Well suited,  [] Ideally suited 

Design principle of a cold-shrinkable joint

Cable accessories made with POWERSIL® silicone rubber are used in high and low voltage cables. They allow for various types of field control – from high to low voltage, as well as for both push-on and cold-shrink technologies.

Benefits:

  • Outstanding dielectric properties
  • Permanent elasticity over a broad temperature range
  • Excellent hydrophobic properties and resistance to heat, UV and ozone
  • Very good tracking resistance
  • High arcing resistance

Production method:

  • Solid silicone rubber (HTV)
  • Liquid silicone rubber (LSR)
  • Extra-low-viscosity systems (POWERSIL® XLR®)
  • Room-temperature-curing systems (RTV-2)

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Appearance Hardness Shore A Tensile strength Elongation at break Tear strength Compression Set Penetration Specific Features
ELASTOSIL® LR 3002/35 A/B colourless colourless 33[1] 33[1] 7.0 N/mm²[2] 7.0 N/mm²[2] 460 %[3] 460 %[3] 29 N/mm[4] 29 N/mm[4] 11 %[5] 11 %[5] - - Low viscosity, Reduced volatile content
ELASTOSIL® LR 3003/20 TR A/B transparent transparent 22[1] 22[1] 8.3 N/mm²[2] 8.3 N/mm²[2] 870 %[3] 870 %[3] 24 N/mm[4] 24 N/mm[4] 17 %[5] 17 %[5] - - Food-contact, General purpose, Reduced volatile content
ELASTOSIL® LR 3003/30 A/B transparent transparent 30[1] 30[1] 7.0 N/mm²[2] 7.0 N/mm²[2] 610 %[3] 610 %[3] 21 N/mm[4] 21 N/mm[4] 10 %[5] 10 %[5] - - Food-contact, General purpose, Reduced volatile content
ELASTOSIL® LR 3003/40 A/B transparent transparent 40[1] 40[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 610 %[3] 610 %[3] 30 N/mm[4] 30 N/mm[4] 11 %[5] 11 %[5] - - Food-contact, General purpose, Reduced volatile content
ELASTOSIL® LR 3003/50 A/B transparent transparent 50[1] 50[1] 10.3 N/mm²[2] 10.3 N/mm²[2] 490 %[3] 490 %[3] 26 N/mm[4] 26 N/mm[4] 13 %[5] 13 %[5] - - Food-contact, General purpose, Reduced volatile content
ELASTOSIL® LR 3003/60 A/B transparent transparent 60[1] 60[1] 9.8 N/mm²[2] 9.8 N/mm²[2] 340 %[3] 340 %[3] 27 N/mm[4] 27 N/mm[4] 16 %[5] 16 %[5] - - Food-contact, General purpose, Reduced volatile content
ELASTOSIL® LR 3003/70 A/B transparent transparent 70[1] 70[1] 9.3 N/mm²[2] 9.3 N/mm²[2] 290 %[3] 290 %[3] 20 N/mm[4] 20 N/mm[4] 16 %[5] 16 %[5] - - Food-contact, General purpose, Reduced volatile content
ELASTOSIL® LR 3004/40 A/B transparent transparent 40[1] 40[1] 9.2 N/mm²[2] 9.2 N/mm²[2] 610 %[3] 610 %[3] 29 N/mm[4] 29 N/mm[4] 10 %[5] 10 %[5] - - Fast curing, Food-contact, Reduced volatile content
ELASTOSIL® LR 3005/60 A/B transparent transparent 60[1] 60[1] 9.5 N/mm²[2] 9.5 N/mm²[2] 380 %[3] 380 %[3] 28 N/mm[4] 28 N/mm[4] 15 %[6] 15 %[6] - - Fast curing, Low compression set without post-cure, Reduced volatile content
ELASTOSIL® LR 3043/40 A/B transparent transparent 40[1] 40[1] 9.8 N/mm²[2] 9.8 N/mm²[2] 660 %[3] 660 %[3] 36 N/mm[4] 36 N/mm[4] 25 %[5] 25 %[5] - - Food-contact, High tear-resistant, Reduced volatile content
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 %[7] 20 %[7] - - 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 %[5] 11 %[5] - - 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 %[5] 11 %[5] - - Cold-shrinkable, Electrically conductive, Low viscosity
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® GEL A/B - - - - - - - - - - - - 300 1/10mm[8] 300 1/10mm[8] -
POWERSIL® GEL C 670 A/B - - - - - - - - - - - - 220 1/10mm[8] 220 1/10mm[8] -
POWERSIL® GEL FC A/B - - - - - - - - - - - - 180 1/10mm[8] 180 1/10mm[8] -
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® PRIMER G 790 TOLUENE FREE - - - - - - - - - - - - - - Adhesion promoting primer, Solvent-based
WACKER® PRIMER G 791 A/B - - - - - - - - - - - - - - Adhesion promoting primer, Solvent-based
WACKER® SILICONE PASTE P - - - - - - - - - - - - - - Lubricant
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 6 h / 200 °C,  [6] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A,  [7] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 4 h / 200 °C,  [8] Penetration (Hardness) | DIN ISO 2137 | 150g cone / 60s penetration time,  [] Suited,  [] Well suited,  [] Ideally suited 

POWERSIL® Fluids are low-viscosity silicone fluids that have been specifically optimized for the insulating systems employed in modern transformers. POWERSIL® Fluids are used here for cooling and insulating as well as for high-voltage terminations.

Benefits:

  • High heat resistance
  • Short-term thermal shock resistance
  • Very high, long-term heat resistance
  • Use at low temperatures with rated output
  • Extremely low dissipation factor
  • Minimal change in electrical properties over a wide temperature range
  • High flash point

Product Recommendations

Products
Product properties
Suitability
Specific Features
Transmission & Distribution
Transformers
POWERSIL® FLUID TR 50 High fire point, High flash point
Legend
[] Suited,  [] Well suited,  [] Ideally suited