Distribution FTU FDR-28

◇can install 485/232 communication port，or remote control by fiber and wireless；accelerate after reclosing; if the switch is on when there is perminant failures, it will accelerate trip off ◇remote control/manually operation reclosing, accelerate trip, and reclosing block：If the user forgot to remove the ground switch after repairy, it should accelerate trip off after power on ◇The delay time of reclosing 3 times can be adjusted； ◇Switch on/off circuit is designed by preventing software/hardware malfunction,and can prevent trip； ◇zero sequence curren can judge the failure inside/outside the district；◇Prevent malfunction design for remote control on switch on/of Struture features a) Controller is microdevice of relay protection and monitor， b)Weather resistance, dewing proof; small size and light in weight c)Connect with switch by aviation connectors and multicore cables. d)With good connect reliability and protection class The channel of input analog quantity is 4, A phase current, C phase current, zero sequence current, the voltage between B&C phase. Controllor monitor the value of analog quantity and compare them with the fixed value to judge whether it’s network failures, then take responding treatment. Functions ◇Quick-trip protection◇over current protection ◇Reclosing 3 times ◇log-out ◇anti-surge protection ◇zero sequence protection ◇real time clock ◇accelerate after reclosing◇real time status inquiry ◇PDA control◇local/remote control set up definite value ◇report fault to center system