Emergency Manual Operation Of The Motor Operated Mechanism - ABB ZX0 Manual For Installation And Operation

4.3.2 Manual mechanism
(see fig. 4.3.2.1)
Operation of the earthing switch
The earthing switch is always operated manually.
− Pull the selector slide (1) outwards, press it down towards
the earthing switch symbol and hold it fast.
− Plug the operating lever onto the hexagon through the
released opening (5) in the door.
Earthing switch OFF ð ON
− Turn the operating lever approx. 90° clockwise.
− Withdraw the operating lever.
Earthing switch ON ð OFF
− Turn the operating lever approx. 90° counter-clockwise.
− Withdraw the operating lever.
Operation of the disconnector
− Pull the selector slide (1) outwards, press it up towards the
switch-disconnector symbol and hold it fast.
− Plug the operating lever onto the hexagon through the
released opening (4) in the door.
Switch-disconnector OFF ð ON
− Turn the operating lever approx. 90° clockwise.
− Withdraw the operating lever.
Switch-disconnector ON ð OFF
− Turn the operating lever approx. 90° counter-clockwise.
− Withdraw the operating lever.
1) mcb: miniature circuit-breaker
4.3.3 Motor operated mechanism
Operation of the switch-disconnector
Closing and opening are performed by pressing the optional ON
and OFF buttons in the low voltage compartment door, or manu-
ally.
4.3.4 Emergency manual operation of
the motor operated mechanism
On failure of the supply voltage or on failure of the mechanism
motor, the motor operated mechanism without blocking magnets
can be operated in the same way as a manual mechanism (see
section 4.3.2).
Switch the mcb
1)
before performing emergency manual operation.
Three position switch-disconnector mechanism fitted with
optional blocking magnets -RLE3 and –RLE4
The blocking magnets -RLE3 and -RLE4 prevent movement of
the selector slide in certain situations. This interlock is active on
failure of the supply voltage. Deblocking of the blocking magnets
requires work inside the three position switch-disconnector oper-
ating mechanism, and may only be performed by qualified person-
nel. Contact the ABB Service Department if necessary.
Fig. 4.3.2.1: Operation of the three position switch-disconnector (in this
case earthing switch operation
for the mechanism motor off
Manual ZX0 HB 600 en - Revision 05 | 55