Damages inside the switching-device compartment
Damages inside the switching-device compartment / voltage transformer
compartment due to incorrect or incomplete installation of the partition / bushing
plate.
To fasten the partition / bushing plate, always assemble all bolted joints all
around, and screw them in up to the end of the thread.
Preconditions
• Feeder earthing switch in CLOSED position
• High-voltage door open
• Door to voltage transformer compartment open
• In the switching-device compartment and in the voltage transformer compartment:
• Low-voltage connectors stowed away
• Bushing plate and associated connecting elements available:
• 8 bolts M8x20 with contact washers and plain washers size 8 acc. to ISO 7093
• 3 bolts M8x20 with contact washers
• Connection leads and associated connecting elements available:
• 3 nuts M8 with contact washers and plain washers
• Vertical partition and associated connecting elements available:
• 8 bolts M8x20 with contact washers and plain washers size 8 acc. to ISO 7093
• Protection plate and associated connecting elements available:
• 4 nuts M8 with contact washers
• Voltage transformer compartment and associated connecting elements available:
• 14 bolts M8x20 with contact washers
• Lid of metal cover and associated connecting elements available:
• 2 bolts M8x20 with contact washers
• Wiring duct cover and associated connecting elements available:
• 3 bolts M8x20 with contact washers
• Labyrinth and associated connecting elements available:
• 4 bolts M8x16 with contact washers
• 2 nuts M8 with contact washers
Procedure
Fix the bushing plate by screwing the bolts hand-tight:
• 8 bolts M8x20 with contact washers and plain washers size 8
acc. to ISO 7093 (1)
• 3 bolts M8x20 with contact washers (2)
Tighten the bolts with a tightening torque of 25 Nm.
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