Citadel 2.0 - Instruction Manual - page:
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Trip-free operation of draw-out breakers
(refer to Figures 95)
All draw-out Citadel circuit breakers are of a trip free design.
Breakers that are not in the proper position within the cell (i.e. they are not in Connect
or Disconnect positions) or have certain dedicated trip free interlocks engaged; will
immediately trip open upon being given an umblocked signal to close.
The close signal may come from the breaker’s front panel mechanical push button, an
electrical actuation of the close coil, or draw-out cell floor rails lifting the close linkage.
Fixed mounted Citadel elements that are used to vacuum convert older air breakers will
have the same trip-free operation as actuated by the original breaker’s linkages.
Fixed mounted breakers can also optionally have a key lock (Kirk key or similar) to
provide trip-free interlocking function.
Customers should consider “Block the Close” interlocking for additional safety. Contact
the factory to learn more about the Citadel’s “Block the Close” capability for fixed
mounted elements used for roll-in replacement breakers.
Citadel Draw-Out switchgear automatically incorporates the block the close interlocking
and protective function for improved operator safety.
FIGURE 95
Trip Paddle
Close Paddle
B R E A K E R O P E R A T I O N