Mounting The Shunt Release; Mounting The Auxiliary Switch - ABB NAL Series Mounting And Operation Manual

Testing the interlock
It shall not be possible to close the switch-disconnector when the
earth switch is closed.
It shall not be possible to close the earth switch-disconnector
when the switch is closed.
11.0 Mounting the shunt release. Fig. 38
Turn the operating mechanism shaft of maximum angle of 60°
clockwise.
Opening spring housing F, see Fig. 31, must not be latched.
Fig. 35 and 39 Auxiliary switch mounted on NAL | Fig. 36 Wiring diagram auxiliary switch | Fig. 37 Wiring diagram tripping coil | Fig. 38 Shunt
trip parts component A-mechanism
Fig. 35
Fig. 38
14 NAL/NALF/VR – Mounting and operation manual
Return the shaft to its neutral position. Connect the bar to the per-
forated disc (see Fig 38) in such a way that it does not block the
mechanism and work properly. After installation, check the opera-
tion of the shunt trip and its cooperation with the mechanism.
12.0 Mounting the auxiliary switch. Fig. 35 and 39
The auxiliary switch is mounted to the frame on the opening side
of the switch-disconnector and the bar connected to the crank on
the hollow shaft.
Fig. 36
Fig. 37
Fig. 39