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Materials for insulation of ends of coils and similar use

Materials for insulation of ends of coils and similar use

Choosing the right insulation of coil ends is from varios points of view the most important part in the development of insulating system. Insulation of coil ends must not withstand only stresses in complex operating conditions and unpredictable operating condition uptime, but it is also strongly stressed during manufacture of the winding. Leaving aside the traditionally tough insulating system Samicatherm®, there are today a number of tough ,flexible or semi flexible materials, which may be selected so as to satisfy constructors.

Usually exists between the main insulations and insulation of the coil ends tapered or stepped transition, while the trend towards wrapping machine has the result that the coil ends are insulated with material Samicatherm® and the ' noses' of coils are insulated with flexible tape. The thickness of insulation of coil ends is usually between 60 to 100% of thickness of main insulatio.

 

Name: Type: Thickness mm: Samica® contens g/m2: Structure: Properties: Applikations:
Filosam® 326.57 - 10 326.57 - 20 0,11             0,15 72                                      109 acrylic resin, mica paper, polyester foil, two side reinforcement with glass longitudinal  fibers total cured tape with acrylic resin suitable for insulation of coil ends of high-voltage machines to 11 kV and as main insulation to 3,3 kV
Filosam® 326.57 - 50 0,13 75 mica paper,reinforcement with longitudinal glass fibers,epoxy resin in state B additionally provide some bonding of positions and thereby closing of insulation insulation of coil ends of high-voltage machines
Isomica® 326.13 0,17 90 Samica® / glass fabric with epoxy resin in state B,one side with polyester foil very good bonding of positions for the highest requirements insulation of coil ends of high-voltage machines
Samicaflex® 366.19 0,18 120 Samica® / glass fabric with uncured silicone elastomer   Insulation of flexible coil ends bevor and after winding,main insulation of traction coils to temperature class C
Samicatherm® 366.63 0,2 120 Samica® / glass fabric with flexible epoxy resin in state B produced semi-tough insulation with very good bonding of positions insulation of coil ends of high-voltage machines

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