Alstom FKG1X, Instruction Manual

Page: 52 / 274

Description and operation
Description of circuit breaker pole
G12--109EN03
1/4
02--2011
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relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is
strictly prohibited.
GRID
Active parts
Description
The active section of the circuit breaker comprises:
-- The mechanism casing ( A) -- on the side of the moving part,
-- The interrupter chamber ( C ) – in a composite envelope (1),
-- The casing ( B ) -- on the side of the fixed section.
Diagram
1 2 3
C
A B
Circuit--breaker
Open
Description
The composite envelope (1) enclosing the interrupter chamber separates the
two casings, providing insulation between the incoming andoutgoing sections
of the circuit breaker.
The current sockets (2 & 3) situated in the extensions to thecasings, are used
to provide connections to the busbars.