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D I ST RI B U T I O N SO LU TI O N S
5.3. Main components
5.3.1.
Apparatus
PowerCube modules can be equipped with the
following apparatus:
• HD4 series SF6 circuit breaker;
• VD4, VM1 and eVD4 series vacuum circuit breaker;
• V-Contact VSC series vacuum contactor / ConVac;
• operational trucks;
• measurement trucks.
The apparatus is always the withdrawable version,
mounted on a truck that allows the following
positions in relation to the compartment:
CONNECTED: – main circuits connected;
ISOLATED:
– partially isolated with main circuits
disconnected;
– totally isolated with main circuits
disconnected;
WITHDRAWN: – main circuits disconnected and
apparatus racked out.
The apparatus is equipped with special locks, located
on the front crosspiece which allow their hooking into
the corresponding slots of the unit. The front
hooking crosspiece also allows the connecting/
isolating , with the door closed, by means of the
special operating lever.
A lock prevents truck insertion (for example when the
earthingswitch is closed).
If the truck is in the indefinite position (between
connected and isolated), the lock prevents both
mechanical and electrical circuit breaker closing.
The truck can be equipped with a locking magnet
which, if deenergised, prevents its operation.
The connector (plug) for connection of the operating
mechanism electrical accessories comes out of the
front protection of the apparatus.
The slides for activating the segregation shutters of
the medium voltage contacts are placed on the sides
of the apparatus.
Please refer to the relative instruction booklet for
further details.
17
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