Switch-Fuse Reset; Steps For Fuse Replacement; Figure 7: Front Of Safelink Unit Showing The Mimic Diagram For The Switch-Fuse Following A Fuse Blow Event. Note The Word 'Reset' And The Red Fuse Blown Indicator Are Displayed; Figure 8: Fuse Door Open And Fuse Canisters Available - ABB SafeLink Installation And Operating Instructions Manual

abb
SLMIO ver 2.12

2.3 Switch-Fuse Reset

The operation of the switch-fuse is identical to the ring switch except when a fuse has
blown. In which case, the striker initiates the automatic opening of the switch. This is
indicated by the symbol "O" appearing on the mimic and the word "RESET" being
shown above the handle hole. In addition to this, the fuse blown indication on the front
of the SafeLink will show.
The arrow on the handle socket will indicate that the handle must be rotated anti-
clockwise to reset the mechanism (the only possible action).
It is important to rotate the handle fully until the stop is felt, to reset the switch
correctly.

2.3.1 Steps for Fuse Replacement

1. To gain access to the fuse
compartment the switch must be in
the earth position and the selector in
the blocked position before the door
can be opened. The door catch will
not fully rotate and release the door
unless these conditions are met. This
ensures that the internal earthing of
both ends of the fuse is in place
before access is available.
Rotate the fuse access door catch anti-
clockwise to open.
2. Once the door is opened, the fuse
canisters are visible. The blown
fuse(s) will be indicated by the
canister(s) with the extended white
plastic pin(s). All three fuses should
be replaced as a set.
ABB Ltd, Switchgear Division, Auckland, New Zealand
SF Insulated Ring Main Unit
6
Installation and Operating Instructions
Figure 7: Front of SafeLink unit showing the mimic
diagram for the switch-fuse following a fuse blow
event. Note the word 'RESET' and the red fuse blown
indicator are displayed.
Figure 8: Fuse door open and fuse canisters
available.
SafeLink
8