Citadel 2.0 - Instruction Manual - page:
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Cubicle
interference key
Breaker Rating Interference Key
All Citadel breakers will be provided with a special bracket that allows only the proper
rated breaker to be inserted into an associated properly rated switchgear cubicle. On
the floor of the Citadel Cubicle is mounted a universal bracket with comb teeth along its
top edge. The breaker has mounted on the lower rear portion of the draw out carriage a
mating key that allows the two bracket to slide past each other. Only when the proper teeth
sequences line up will the breaker be able to continue the insertion into the cell. If you are
trying to insert a breaker into a cell and it bangs up against something –
STOP !!
Discontinue the insertion process and exam the breaker nameplate. Verify that the
breaker in question is specifically rate to go into that specific cubicle by both rating and
function. Breakers that have certain functions such as Generator Breakers or Capacitor
Switching breakers or Ground & Test devices may have inference brackets to limit the
cubicles they are allowed to be inserted into. If so, such breakers (devices) will be provided
with an Interference Key that will impede the ability of an operator to put that specific
breaker (device) into any general cell even if the ratings are proper.
If everything continues to look OK but the breaker does not easily enter the cubicle
–
CALL FOR FACTORY AUTHORIZED SERVICE ONLY.
NEVER attempt to force a breaker into a switchgear cubicle.
FIGURE 91
B R E A K E R O P E R A T I O N
