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5. A) If the semiconductor unit is not equipped with fuses (without option +F260): Remove
the DC busbar assemblies.
WARNING!
Be very careful when you remove bolts and screws. Do not drop anything inside
the cabinet. Pay extra attention to the horizontal rear busbar plates. When you
remove the bolts, hold the plate to prevent it from falling behind the DC breaker
switch.
• Remove the bolts (a) that attach the busbar assemblies (b) to the busbars of the DC
breaker switch. Pull the bolts and rear busbar plates out of the cabinet.
• Remove the bolts (c) at the top of the busbar assemblies and remove the busbars
assemblies completely.
B) If the semiconductor unit is equipped with fuses (with option +F260): Remove the
lower fuse busbars.
WARNING!
Be very careful when you loosen the screws. Do not drop anything inside the
cabinet. Pay extra attention to the loose busbar plates behind the breaker
busbars.
b
Maintenance 43
c
a
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