Siemens 8DB10 Installation And Operating Instructions Manual page 75

Bolting the flanges of the
busbar housings together
Fig. 68: Short busbar housing with compensator
864-5091.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • Revision 06
➭ Apply one lifting gear each at the rear and at the front of the base frame of the transport
unit to be shifted. Prop the lifting gear up at the surrounding walls.
➭ Place one person in observer position at the already mounted transport unit. The observer
must watch the movement of the flanges and the busbars and must be able to reach
the busbar sections by hand through the assembly openings.
➭ If the flange connections are equipped with a compensator or insulating joint:
Fix the associated insulating rings / insulating plates provisionally at the flange side of
the already fixed-mounted transport unit.
➭ On the observer´s command, push the transport unit to be attached towards the already
mounted one using the lifting gear. The observer checks and corrects the approach of
the busbar sections.
➭ Continue approaching the transport units until the flanges touch evenly.
➭ In case of deviations, correct the position of the transport unit, compensating any floor
unevenness with shims under the corners (same points as for roller pads / bars).
ATTENTION
Sensitive parts of the switchgear may be damaged during installation work at the busbar and
the busbar housings.
➭ While working at the busbars or the busbar housings, prop up only on the base frame of
the transport unit.
➭ Do not prop up on sensitive parts of the switchgear like gas pipes, bursting discs,
shafts, etc.
➭ Flange-to-flange connections: Tighten M8x40 bolts crosswise. Tightening torque: 20 Nm.
Fig. 67: Flange-to-flange connection
➭ Flange connections with compensator: Push insulating ring between the flanges.
Fasten M8x55 bolts crosswise with one insulating sleeve each. Tightening torque: 20 Nm.
① Busbar housing (bolts M8x55)
② Toroidal sealing ring
③ Insulating ring (thickness: 18 mm)
④
Compensator
⑤ Busbar housing (bolts M8x35)
Installation
① Busbar housing
② Toroidal sealing ring
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