ABB Softstartéry - opravy, náhradní díly (EN)

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

Strana 69 z 79







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8. If only the HV-Board will changed to step 21. 5. Remove the five screws.Step step 1. 3. the cables from the current transformers not are marked, mark them with and 3. Remove the six screws. Disconnect the cables the HV-Board from the thyristors and fans. Disconnect the cables from terminals 1L1, 3L2, and 5L3 (main voltage). 7. 2. Remove the old HV-Board. 6. Don’t lose the connector between HV-Board and LV- Board. Remove the front cover (four screws). Disconnect the cables the LV-Board from the thermal switch and current transformers. Discharge the tools and yourselfby touching earth (if you are not earthed). If the Softstarter shall upgrade Torque Control step 9. -. 9. 10. Before disconnecting the cables mark them. the cables from the thyristors not are marked, mark them with and 3. Disconnect all cables from the terminals 1to 20, external keypad, “Analogue Out/PTC” sensor and the Fieldbus plug. 4