21.2.2.3 Block diagramen04000473.vsdLogicCompactFlashNorthbridgeCPUMemoryPC-MIPPMCconnectorUBMconnectorEthernetBackplaneconnectorPCI-PCI-bridgeIEC04000473 V1 ENFigure 522: Numeric processing module block diagram21.2.3 Power supply module (PSM)21.2.3.1 IntroductionThe power supply module is used to provide the correct internal voltages and fullisolation between the IED and the battery system. An internal fail alarm output isavailable.21.2.3.2 DesignThere are two types of the power supply module. They are designed for different DCinput voltage ranges see table 886. The power supply module contains a built-in, self-Section 21 1MRK502052-UEN BIED hardware1150Technical manual
