Siemens 3AP2-FI Operation & Maintenance Manual page 17

The switching operation is transmitted to the interrupter units 22 (high-voltage potential) by the spring drive
mechanism (ground potential) via an operating mechanism rod 18.27.1, the shaft 15.8.3, the operating rod 16.9
and the bell-crenk mechanism 21.
The filter cowls 15.11 contains the filter material 15.16.3 which collects SF
residue.
22 Interrupter unit
23 Grading capacitor
23.1 Inner bracket
23.2 Outer bracket
Fig. 4 Arrangement of grading capacitor
23.1
22
3 Description
decompositon products and moisture
6
23.2
1001360a
16