ABB Softstartéry - opravy, náhradní díly (EN)

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

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5. PSTB unit remove the cables from the terminal block. . Disconnect all cables from the terminals 1to 20, external keypad, PTC sensor and the Fieldbus plug. Remove the front cover (four screws). Disconnect the cables the HV-Board from the thyristors and fans. 4. 7.Step step 1. the cables from the current transformers not are marked, mark them with and 3. Disconnect the cables the LV-Board from the thermal switch and current transformers. 6. Discharge the tools and yourself touching earth (if you are not earthed). 2. the cables from the thyristors not are marked, mark them with and 3. 3. Before disconnecting the cables mark them