EARTH FAULT RELAY IN A SINGLE PHASE POWER SYSTEM. Under the guidance:Pre!ented "#: Mi!! . SU"HOLA$SHMI PARI%A ANIMESH ROY A!!t. Pr&'e!!&r ( )HIRAN*IT PAL%e+t.&'EEE(SOUMYA "HATTA)HARYA MITS RAYAGA%ASAYAN %ASGUPTA SHASHAN$ SHEH$AR )ONTENTSIntr&ducti&nW&r,ing Princi+-eTran!'&r.erRecti/er)a+aciti0e /-ter%i&deRe!i!t&rStri+ 1&ard23452367 0&-tage regu-at&rATMEGA68L)%P&tenti&.eterRe-a#)&nce+t &' earth 'au-t re-a#)&nc-u!i&n.INTRO%U)TIONManydevelopingcountriesconfrontwidespreadtheftof electricity from government owned power utilities. In India electricity theft leads to annual losses estimated at US$4.5 billion, about .5 percent.!ho are the losers""#onestconsumers,poorpeople,andthosewithout connections,whobeartheburdenofhightariffs,system inefficiencies,andinade$uateandunreliablepower supply.INDIAS GENERATION CAPACITYWOR$ING PRIN)IPLEThe earth 'au-t re-a# i! a de/nite ti.e &0er current re-a# 9ith an additi&na- -&9+a!! /-ter. Tri+-e har.&nic! are &' +articu-ar i.+&rtance !ince the!e har.&nic! are additi0e and c&+ha!a- in a three +ha!e !#!te. and thu! a++ear in the !#!te. neutra- &r in an earth 'au-t re-a# a! :er& !e;uence A@=6?68 dut# c#c-e.L)% PINS )ONNE)TE%A 68H7 ALPHANUMERI) L)% WHI)H IS )ONNE)TE% WITH u) 9ith PORT). L)% )&..and Pin!:RSREGISTER SELE)T)ONNE)TE% TO PORT) PIN 6.RWREA%WRITE SELE)T)ONNE)TE% TO PORT) PIN 7.ENENA"LE)ONNE)TE% TO PORT) PIN A. )ONTINUATION OF L)% PINSPIN