P1_LABS.doc

POWER HOLDING COMPANY OF NIG. PLCPROFESSIONAL SKILLS TRAINING CENTRE, KAINJIPROTECTION COURSE P1LABORATORY WORK P1-1Caliba!i"# "$ CDG %1ER 1J& GEC 'a() )la*(a) Check pick up at the lowest tap namely P.S or Current Tap at 2.5 Amps, TMS orTime Dial at .!. A"#ust the pick up to $e within %!& o' the settin(s $y mo)in(the sprin( $elow the time "ial.($) Check pick up at all other current taps an" recor" results as 'ollows.Current TapSettin( (P.S)Pick up (Amps) & Tolerance *As le't + To $e ,!To $eTo $e As 'oun" As le't2.5 2.5-..5 -..55. 5./.25 /.25..5 ..50..5 0..5!. !.(c) Sketch the circuit "ia(ram 'or checkin( pick up(") Cali$rate the relay at TMS * .!, .-, .5, .. an" 1nity.2ecor" resultsas'ollows3!The time 4To $e5 is 'rom the relay characteristic cur)e.The time may $ea"#uste" to $e nearer 4To $e5 time $y sli"in( the $rake ma(net 'or 2 times an" 6times the P.S at TMS * .! an" not 'or the other rea"in( (current Tap3 2.5).Multi. o'P.SAmpsTime TMS * .! Time TMS * .-To $eAs'oun"As le't To $eAs'oun"As le't2 5.- ..6 !5 !2.5/ !5.. !..50 2.Multi. o'P.SAmpsTime TMS * .5 Time TMS * ..To $eAs'oun"As le't To $eAs'oun"As le't2 5.- ..6 !5 !2.5/ !5.. !..50 2.(e) Draw the circuit "ia(ram 'or the a$o)e tests.(') Plot the characteristics on a (raph.POWER HOLDING COMPANY OF NIG. PLCPROFESSIONAL SKILLS TRAINING CENTRE, KAINJIPROTECTION COURSE P1LABORATORY WORK P1-%CALIBRATION OF CDG %1EF +J& OC , EF RELAY 2(!) 2ecor" name plate "etails o' relays.(a) 7C23 425 phase ...................................................................................................................................................................................................Settin(s a)aila$le .................................................................($) 8923 ..................................................................................................................................Settin(s a)aila$le .................................................................(c) 7C23 4:5 phase ...................................................................................................................................................................................................Settin(s a)aila$le .................................................................(2) Check pick up o' the a$o)e relays an" a"#ustment.2elayCurrentTap Settin(Pick up& ToleranceTo $e As 'oun" As le't7C22 + Phase8927C2-: ; Phase(-) Check time o' operation an" a"#ustment.2elayCurrent Tapsettin(MPSTime at TMS * !2emarksTo $e As 'oun" As le't7C22 + Ph26892 267C2: + Ph26POWER HOLDING COMPANY OF NIG. PLCPROFESSIONAL SKILLS TRAINING CENTRE, KAINJIPROTECTION COURSE P1LABORATORY WORK P1--COMMISSIONING TESTS ON CURRENT TRANSFORMERSOb.)/!0 To con"uct