Siemens 8DA - 8.4 After Power-Frequency Voltage Test; 9 Installation Work with SF6-Gas After Voltage Test; 9.1 Installing Solid-Insulated Bars and Filling Circuit-Breaker Housings

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Bolting the flanges of the
busbar housings together
! Flange-to-flange connections: Tighten M8x45 bolts crosswise. Tightening torque:
20 Nm.
! Flange connections with compensator: Push insulating ring between the flanges
(see Fig. 16:, Page 26). Fasten M8x65 bolts crosswise with one insulating sleeve
each. Tightening torque: 20 Nm.
! Flange connections with insulating joint: Push insulating ring between the
flanges (see Fig. 17:, Page 26). Fasten M8x65 bolts crosswise with one insulating
sleeve each. Tightening torque: 20 Nm.
Bolting busbars together The busbars are accessed through the horizontal flanges of the busbar housings
(assembly openings).
Fig. 18: Flange connections with insulating sleeve
a
Current transformer mounting plate
s
Flange
d
Insulating ring
f
Compensator
g
Insulating sleeve
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
supporting frame of the transport unit.
! Do not prop up on sensitive parts of the switchgear like gas pipes, rupture
diaphragms, shafts, etc.