Areva FLUOKIT M24+ - Locking-out and locking operations; Functional mechanical interlocks; Locking-out by padlock (not supplied)

40
15 Locking−out and locking operations
15.1 Functional mechanical interlocks
M24+ functional interlocks are
equipped with internal mechanical
interlocks, called "functional",
intended to avoid any kind of ope-
rating error.
It is necessary to know these inter-
locks in order to operate the switch-
gear correctly.
INTERLOCKING FUNCTION FUNCTIONING
DBetween the cable access panel
and the earthing switch
DIt is impossible to completely open
the earthing switch if the door panel
is not in place.
−The fitting of the access panel to
the cable compartment unlocks the
earthing switch.
DEarthing switch open, it is impos-
sible to remove the cable access
panel.
−The opening of the earthing switch
locks the door panel in place.
DBetween the earthing switch and
the load break switch
DThe partial opening of the earthing
switch (door panel removed) forbids
the closing of the load break switch.
DThe complete opening of the ear-
thing switch (door panel in place)
authorises the operation of the load
break switch.
− Whenever the cable access panel
is removed, it is impossible to open
the earthing switch, but a mechani-
cal interlock forbids operating the
switch.
− The presence of the panel frees
this interlocking.
DLoad break switch closed, it is
impossible to close the earthing
switch.
−A mechanical interlock forbids this
operation.
15.2 Locking−out by padlock (not supplied)
F De−energize the LV auxiliaries
power supplies before
padlocking the switch (C410 or
C430 mechanical control) in the
open or closed position.
F Padlocking of the earthing
switch in either the open or
closed position.
F Other padlocking devices for
the earthing switch or load
break switch in the open or
closed position, with a short
shackle padlock..