Installation
64
9229 0025 176 0E
2021-11-15
Inserting and racking the SION
®
withdrawable circuit-breaker
Material damage due to incorrect switch position!
Mechanical parts can be dam-
aged if the switch position is not observed.
Always move the vacuum circuit-breaker on withdrawable part in the OPEN switch
position.
For SION
®
vacuum circuit-breakers, two versions of withdrawable part are available,
each designed for different types of switchgear. The two versions differ in part with
regard to their design, installation, commissioning and operation. In the following, a
distinction is made between the two variants where technically relevant.
The withdrawable part must be safely locked in the switchgear. The dimensions of
the slots for receiving the lock on both sides of the system-side guide rails must be
observed. For dimensions, see Fig. 107.
• Insert the withdrawable circuit-breaker into the switchgear-side guide rails (see
1.).
• Push the withdrawable circuit-breaker into the guide rails until they hit the side
stops (large arrow), moving locking handles towards the middle of the with-
drawable part (small arrows, see 2.).
• After reaching the side end stops, let go of the locking handles (small arrows,
see 3.) and check that it is securely locked.
Hand cranks and travel distances
Note
Fig. 107 Example of insertion in guide rails with the di-
mensions of the slots
Fig. 108 Example – inserting and locking
Hand crank
17.5 kV
24 kV
Siemens withdrawable part
3AX1430-2C (hexagon)
220 mm (optional:
180/200 mm)
260 mm
Third-party withdrawable part
3AX1430-8A (square)
200 mm
300 mm
