Hardware description32generator to / from the supply grid. Before connection, the converter performsnetwork synchronization. In fault situations where the circuit breaker trips, theconverter stops and the user has to manually reconnect the breaker. See the sectionBreaker settings.Generator stator connections are in power cabinet (U/V/W).Current transformers T109.1 and T109.2 are used to measure the stator currentfrom two phases. Measurement is made inside the control unit, which is part ofconverter section.Grid-side converter supplySupply for grid-side converter is through grid-side contactor K1 and taken from busbars at the right top of power cabinet. Cables are routed to converter section fromthe AC fuses F1.1-3.Over voltage protectionOver voltage lightning protection of the grid-side converter is implemented by oneindependent overvoltage protection device in each phase.The protection device isinstalled below the power cabinet.Auxiliary voltageThere are 3~ 690 VAC outputs available, and 1~ 230 VAC outputs. Maximum totalcurrent from 690 VAC is 160 A.Arc protectionThe power cabinet is designed to give arc protection by placing the essentialventilation holes to the backside of the cabinet. In case of an arc in bus bars, the arcpressure and fumes leaves the cabinet from the backside thus causing minimumdamages.
