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