Siemens NXAIR M - Page 90

Operating the circuit-breaker panel with HV HRC fuse
90 NXAIR M 139-2021.9 / 07
(1)
Fuse assembly for phase L3
(2)
Contact arm assembly with tulip
contact
(3)
Service truck
(4)
Fuse trip indicator
(5)
Outer phase L1
(6)
Middle phase L2
(7)
Outer phase L3
Fig. 144: Circuit breaker / fuse combination
on the service truck
Fig. 145: Seen from front: Arrangement
of HV HRC fuse-links
HINT
Fuse trip indicator
When the high voltage door open, a fuse trip indicator is visible inside the
switching-device compartment.
Tripped fuse-links can be seen by checking the position of the fuse trip indicator
on each phase. The fuse-link has not tripped, if the fuse trip indicator is in the
horizontal position.
2
1
3
4
5
6
7