ABB SF6 LTB 245E1 BLG 1002A - Inspection of the Lower Current Path

Overhaul Instructions Contact and puffer replacement
1HSB435409-201 enrev1 19
6.3 Inspection of the lower current path
Check that the lower current path’s sealing ring (5), Teflon band (4) and guide bush
(6) are not worn. Also check that the valve washer (7) is flat and seals.
Check that the silver on the lower current path contacts is not worn so that the
copper is visible.
If there are signs of wear, replace the lower current path.
Tighten the bolts (2). Tightening torque 22.5 Nm.
Figure 6-3. Lower current path.
Item
1 Flange
2 Bolt M8x20
Retaining washer
Washer
3 Current path
4 Teflon band
5 Sealing ring
6 Guide bush
7 Valve washer
2
1
3
5
7
4
B10062
6
TIGHTENING TORQUE
22.5 Nm