ABB ZX0 - Operation of the three position disconnector

Manual ZX0 HB 600 en - Revision 05 | 43
Operation of manual mechanism 2 (figure 4.1.2.2.1) is purely
manual, with the exception of the motorized stored energy spring
mechanism for the circuit-breaker. The three position disconnec-
tor is mechanically interlocked against the closed circuit-breaker.
Operation of the earthing switch is only possible when the discon-
nector is open, and vice versa.
Fig. 4.1.2.2.1: Manual mechanism 2: Displays and controls
4
2
1
3
8
7
5
6
4.1.2.2 Manual mechanism 2
− Mechanical switch position indication is effected by a
graphical symbol (3) in the low voltage compartment door.
− In order to change the switching condition of the circuit-
breaker, press the mechanical OFF button (1) or the me-
chanical ON button (2).
4.1.2.2.1 Operation of the
circuit-breaker
1 OFF button for circuit-breaker
2 ON button for circuit-breaker
3 Switch position indicator for
circuit-breaker
4 Selector lever
5 Opening for disconnector operation
6 Switch position indicator for
disconnector
7 Opening for earthing switch
operation
8 Switch position indicator for
earthing switch