Citadel 2.0 - Instruction Manual - page:
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21
Block the Close
An additional layer of Safety for operating personnel is added to draw-out Citadel
breakers by an interlock known as “Block the Close”. Whenever the racking tool
is inserted into the Citadel racking port – the block the close lever is lifted and
the interlock is ENGAGED. No Closing of the breaker can be accomplished either
manually or electrically while the block the close feature is activated. When
“Block the Close” is active – two micro switches disable the charging motor and
close coil circuits.
Inserting the Racking Tool
The racking tool will insert easily into the breaker racking port with the switchgear
door open or closed
WHEN THE BREAKER IS TRIPPED OPEN ONLY !
(see - Block the Racking Port). As you slide the racking tool into the port / rotate
the tool by hand in ½ rotation increments so that the detents in the front of the
racking tool engage their counterparts on the breaker.
As the racking tool inserts, the “Block the Close” interlock will automatically
engage. When “Block the Close” is active – two micro switches disable the
charging motor and close coil circuits.
The Citadel breaker cannot be closed manually or electrically while the racking
tool is fully inserted into the Citadel.
Once fully inserted – turn the racking tool, in ½ to 1 turn increments, and assure
yourself the tool is well seated.
Turning the racking tool clockwise – either manually or with the OPTIONAL
remote racking device will rack the breaker into the Connected position.
Turning the racking tool counterclockwise – either manually or with the
OPTIONAL remote racking device will rack the breaker into the Disconnected
position.
Make sure you have fully racked the breaker in or out before removing the
racking tool.
The Citadel will NOT operate if it is NOT in the fully Connected or fully
Disconnected positions.
The “Block the Close” interlock will stay lifted and engaged in All positions other
than fully Connected or fully Disconnected.
B R E A K E R O P E R A T I O N