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LR10007.gb.11-09-01_SA155W_2-Pole Product Sheet.pdf

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2-Pole Turbine Generators Stator Winding Construction WEG Group Class F stator insulation and Vacuum Pressure Impregnation (VPI) is provided. ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ the stator winding process. Strand Insulation The strand insulation consists of polyester/ glass fibers. Transpositions ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ ฀ individual turn in the end turn area. Half coil strands are assembled using a Roebel transposition. Bonding To prevent wire movement and provide a uniform solid base
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  Class F stator insulation and Vacuum Pressure Impregnation (VPI)is provided. WEG Group 2-Pole Turbine Generators Stator Winding Construction Duraguard VPI InsulationSystem The Duraguard insulation system is avacuum pressure impregnated epoxy-micainsulation system that offers the followingbenefits:               Resistance          Stator Winding        loop multi-turn stator coils whereas for                      winding process.                        the stator winding process. Strand Insulation The strand insulation consists of polyester/ glass fibers. Transpositions             individual turn in the end turn area.Half coil strands are assembled using aRoebel transposition. Bonding To prevent wire movement and provide auniform solid base for ground insulation,the coil strands are bonded together underheat and pressure with a thermosettingadhesive. Coil Forming The coils are precisely formed using steelforming cradles. Coil Insulation       turn insulation of multi turn coils is appliedto each turn using mica glass tape.The main ground insulation is mica glass      materials are applied to the outside ofthe coils.   Stator winding in progress. MICA Tape GroundWall InsulationDDGL Magnet WireBonding MaterialConductive Tape forCorona Suppression Stator Coil Cross Section.                  www.electricmachinery.com WEG Group                         The other names mentioned, registered or not, are the property of their respective companies. Winding and VPI        the coils are carefully wound in to the                             to the stator.               braced to prevent movement due to              separated by pads that conform and bond               half of each coil are connected using     is then applied. VPI (Vacuum PressureImpregnation)       resin are all components of a specially designed split component system whichis designed to assure process uniformityand maximum retention of resin in theinsulating materials.                            are fully cured in fixtures prior to windinginto the stator. Fabrication of a half loop stator coil with Roebel transpositions.Wound stator entering the VPI tank for impregnation. Tests Extensive in process testing is performedduring coil manufacturing, stator windingand on the complete stator. Tests includeturn insulation testing and high potential. Temperature Detectors During the stator winding processresistance type temperature detectors       lower coil sections in the slot area toprovide stator coil temperature detection.Detectors are positioned in each phase todetect the hottest portions of the windings. Main High Voltage Terminals The line and neutral leads are brought outthrough the sides or bottom of the statorthrough insulating support plates. Theleads project in to a larger terminal boxthat can be arranged for a bus duct flange      potential transformers, surge capacitorsand lightning arrestors can be providedas required.
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