Siemens HT-direct Operating Instructions Manual page 87

● Case A
● Case B
● Case C
Please refer to the relevant sections and drawings for all other tightening torques (electrical
connections and bolted connections for parts with flat gaskets). [ID 78]
A5E01083943A AB
Siemens AG Operating Instructions 2.02 1FW4
applies to electrical connections in which the permissible tightening torque is normally
limited by the bolt materials and/or the load-bearing capacity of the insulators (with the
exception of the busbar connections in case B).
applies to bolts/screws of property class 5.6 (acc. to ISO 898-1) or to bolts in components
of lower strength (e.g. aluminum).
applies to bolts/screws of property class 8.8 or A4-70 (acc. to ISO 898-1), but only in
screwed connections of higher strength (e.g. gray cast iron, steel or cast steel).
Maintenance
6.3 Corrective Maintenance
85