Overview of the FSIH module The optional Flexi Power Distribution Module (NOKIA FSIH 472667A.101) is a stand-alone, general-purposeoutdoor PDU module with Class II overvoltage protection with a 15 kA protection level. Itfeeds 48 V DC power to distributed Flexi RF Modules or Remote Radio Heads withoutan external protection unit . It is a stand-alone external 19-inch wide 2Uhigh outdoor module.The FPFC provides six outputs for Flexi Modules (RF Modules, RRHs, and extensionSystem Module) or any standard -48 V DC device at the site. It can also be used, forexample, up in the tower to divide one main DC line to several RFM/RRHs.
