ABB Softstartéry - opravy, náhradní díly (EN)

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Vydal: ABB s.r.o, ELSYNN Autor: ABB ELSYnn

Strana 29 z 79







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Mount the guide pins the bottom heatsink. Preparation heat sink and semiconductor. • void contact with surface. 11. 12. • Lightly polish the contact surface f semiconductor (the nickel layer must not be polished through) with abrasive cloth P600 which fix flat surface. Connect the gate cables.10. Load side Line side Load side Thyristor 1 Line side Thyristor Black Blue Brown Red -. Rem ove the faulty thyristors. • Clean all polished contact surfaces carefully with Ethanol. • Use well moistened lint-free paper. 13. • void contact with the surfaces after lubrication. • Drip couple drops silicone oil on the cleaned contact surfaces, avoid getting oil the guide hole. Check the semiconductor's symbol and type specification. The contact surfaces must dry before lubrication. Then wipe the surface in order get very thin layer oil. Place the semiconductor the right direction. • Lubricate directly after polishing/cleaning, within minutes. Smooth the oil lightly over the whole surface using lint-free paper