Withdrawability is defined based on the construction of the switchboard. This explains how the Incoming power circuit, Outgoing power circuit and Auxiliary Circuit is connected. This can be of three type as Fixed (F), Disconnectable (D) and Withdrawable (W). Withdrawability is defined by three alphabet as WWW or FFF or WWD etc. The first alphabet explains that how the incoming power circuit is connected; it is fixed type or disconnectable or withdrawabale. Similarly, the second and third alphabet explains that how the outgoing power circuit and auxiliary circuit are connected respectively.



For example, BlokSeT Mw2 is type "WWW" means, the incoming power circuit, outgoing power circuit and control circuit, all are of withdrawable type. Similarly, BlokSeT D, Mf, Ms and Dc are type “FFF” i.e. the incoming power circuit, outgoing power circuit and control circuit, all are of fixed type. In BlokSeT, withdrawability type FFF or WWW are possible.

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