DECS-250 Digital Excitation Control SystemSZP-210-12Basler Electric's DECS-250 digital excitation control system offers highperformance, high flexibility, and extreme reliability for brushless excited ACsynchronous generators. The DECS-250 offers a 15 amp pulse width modulatedpower stage providing high field forcing. Multiple communication options and anoptional integrated power system stabilizer make the DECS-250 a complete systemsolution in a reliable and cost effective package.By utilizing the very intuitive BESTCOMSPlus ® PC software, the setup,configuration, operation and control can be performed quickly and accurately.The BESTCOMSPlus PC software utilizes the powerful and flexible BESTLogicPlusprogrammable logic program. This integrates PLC capabilities allowing users tocustomize their control scheme to meet virtually any application.DECS-250Digital ExcitationControl SystemFEATURESPages 1 and 2DESCRIPTION andSPECIFICATIONSPages 2 and 3INTERCONNECTDIAGRAMPage 4FRONT, TOP VIEWSand DIMENSIONSPage 5ACCESSORIESPages 6 and 7ORDERINGPage 8FEATURESADDITIONAL INFORMATIONINSTRUCTION MANUALRequest Publication 9440300990WINDOWS® SOFTWAREInterface for setting and communicating with Basler productsRequest DECS-250-CD• True RMS sensing, Single or Three Phase voltage and current• Full Generator Metering Capabilities• AVR / FCR / FVR, Power Factor and var modes of operation• Integrated Generator Protection ( 27/59, 81O/U, 32R, 40Q), EDM, 59F,51F, Loss of PMG, Field Short Circuit, and 25 Sync Check• Configurable Protection• Overexcitation Limiting (with temperature compensation)• Underexcitation Limiting• Stator Current Limiting (with temperature compensation)• Var Limiting• Underfrequency Limiting or V/Hz Limiting(continued on next page)12570 STATE ROUTE 143, HIGHLAND, ILLINOIS 62249 USA PHONE 618-654-2341 FAX 618-654-2351