Dismantling the circuit-breaker
Overhaul Instructions
12
1HSB435409-201 enrev1
4.4 Dismantling the circuit-breaker pole for transport
Before the circuit-breaker pole is dismantled, the circuit-breaker must be taken out of
service, see Chapter 4.1.1, and the gas emptied, see Chapter 4.2.1. The density
monitor must be dismantled and the sealing cap (1) fitted on the non-return valve (2).
1. Dismantle the pull-rod between the operating mechanism and the circuit -
breaker pole.
2. Place a lifting sling under the breaking unit’s upper flange as shown in Figure 4-1
and prepare to lift with a crane. Now loosen the circuit-breaker pole (5),
removing the four bolts (3) on the frame and the four bolts (4) on the protective
tube.
3. Lift up the circuit-breaker pole
and carefully lay it down on a
transport carriage. Block up the
circuit-breaker pole so it lies
horizontal. The bottom of the
transport box can be used. The
blocks (6) under the breaking
unit’s insulator should be of an
elastic material, e.g. wood or
rubber.
N. B. If possible, keep the
supports supplied on
delivery for this purpose.
Transport to the workshop or new
site should take place with care so as
not to damage the insulators.
Figure 4-1. Dismantling the circuit-breaker pole.
Item
1 Sealing cap
2 Non-return valve
3 Bolts M20x70
Nuts M20
Washers 21x37x3
4 pcs.
4 pcs.
8 pcs.
4 Bolts M12x50
Nuts M12
Washers 13x24x2.5
4 pcs.
4 pcs.
8 pcs.
5 Circuit-breaker pole
6 Blocks
1
2
B10150
4
3
6
6
5
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