p343 Testing Procedure
Short Description
p343 Testing Procedure...
Description
2004
"HANDS - ON" DEMONSTRATION OF ‘MiCOM P342 & MiCOM343’ NUMERICAL GENERATOR GENERATOR PROTECTION PROTECT ION RELAY RELAY P342 P342 P343 P343
= No dif differen ferenti tial al protect protection ion = With With diff differe erenti ntial al protecti protection on
Objective Objective :- To gain fami familiar liarisation isation of the men men strctre! setting procedres and operation of "i#O" P342 and P343 rela$s%
Intr!#tin t P342 $n! P343 R%$'(
&ach rela$ incldes an e'tensive range of control and data gathering fnctions to provide a completel$ completel$ integrated s$stem of protection! prot ection! control! contr ol! instrmentation! data logging! logging! falt! event and distrbance recording% The rela$s have a ser ( friendl$ displa$ )ith * psh bttons! )hich allo) men navigation and setting changes% +lso! b$ tilising the either the front or rear serial ports of the rela$! fnctions can be read! reset and changed on demand from a local or remote personal compter loaded )ith the "i#O" , soft)are% The P342 and P343 rela$s provide e'tensive protection for generators from a fe) hndred .ilo)atts to t o several hndred mega-)atts% mega-)atts%
1
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Intr!#tin)
This demonstration is meant to reinforce the overvie) that has been given previosl$% The intention is that candidates candidates have the opportnit$ opport nit$ to program and ma.e setting changes in the "i#O" rela$s sing the .e$pads and "i#O" , soft)are% /amiliarisation )ith the rela$ protection fnctions )ill also be gained b$ follo)ing the test procedres illstrated in this docment% docment% Pr%*$r$tin 0 #hec. that that the po)er sppl$ is set at the appropriate appropriate a'iliar$ a'iliar$ voltage! see nder nder top flap for a'iliar$ voltage range%
1 Note Note that the relay will will accept a larger range range of voltages0 voltages 0 20 Plg in the serial connection leads bet)een bet)een the compter compter and the pin port on the front of the "i#O" rela$ as sho)n in the diagram belo)%
M i C O M r e lala y
Laptop
2 5 p in d o w n l o a d / m o n i toto r p o r t
Battery
9 pin ror o n t c o m m ! p o r t Serial da ta connector ( up t o 1 5 m )
S e r iai a l c o m m u n i c a tit i o n p o r t (C O M 1 o r C O M 2 )
"010#ena
30 ,)itch ,)itch on on the a'ili a'iliar$ ar$ po)er spp sppl$ l$ The rela$ )ill no) rn throgh a self ( chec. and perform an ,+" chec.% +fter the rela$ has finished its internal chec.s it )ill have the follo)ing message:
escription "i#O" P343
Note that the rela$ sed sed for this e'ercise e'ercise ma$ be a different different model model to the one sho)n above% 5f this is the case the nmber ma$ be different%
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Frnt *$t% +$,ii$ri($tin) The front plate of the rela$ incldes the follo)ing! as indicated in /igre : 6-character b$ 2-line alphanmeric li7id cr$stal displa$ 18#0 *-.e$ .e$pad comprising 4 arro) .e$s 1 ! ! and 0!an enter .e$ 1 0! a clear .e$ 1 0! and a read .e$ 1 0% 2 8&s9 4 fi'ed fnction 8&s on the left hand side of the front panel and programmable programmable fnction fnction 8&s 8&s on the right hand side% ;atter$ compartment to hold the < ++ sie batter$ )hich is sed for memor$ bac.p for the real time cloc.! event! falt and distrbance distrbance records% + -pin female -t$pe front port for commnicating )ith a P# locall$ to the rela$ 1p to >m distance0 via an &5+1,0232 serial data connection% + 2>-pin female -t$pe port providing internal signal monitoring and high speed local do)nloading of soft)are and langage te't via a parallel data connection% Tri* LED r%!. - This indicates that the rela$ has issed a trip signal% 5t is reset )hen the associated falt record is cleared from the front displa$% 1+lternativel$ the trip 8& can be configred to be self (resetting0?% The trip 8& is initiated from rela$ 3! the protection trip contact% A$r, LED '%/. - /lashes to indicate that the rela$ has registered an alarm% This ma$ be triggered b$ a falt! event or maintenance record% The 8& )ill flash ntil the alarms have been accepted 1read0! after )hich the 8& )ill change to constant illmination! and )ill e'tingish )hen the alarms have been cleared% Ot + (%r0i#% Y%/. Y%/. - indicates the rela$ protection is navailable% H%$t1' Gr%%n. - indicates that the rela$ is in correct )or.ing order! and shold be on at all times% 5t )ill be e'tingished if the rela$@s self-test facilities indicate that there is an error )ith the rela$@s hard)are or soft)are% The state of the health$ 8& is reflected b$ the )atchdog contact at the bac. of the rela$% rela$% S e r i a l 3 o a n d , 4 + a t ini n & !
* o p c o 6 e r
,
LC *+,"
.i7ed unction L!
-L-+M
O%* O. S(+/,C(
0(-L*01
2 CL(-+
% ! er p r o & r a m a ' l e unction L!
2 +(-) 2 (3*(+
8eypad
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The men is divided into colmns and ro)s to form cells! rather li.e a spreadsheet% &ach cell ma$ contain te't! vales! limits and fnctions% The first cell in each colmn contains a heading! )hich describes the date stored in that colmn% /igre 2 sho)s the strctre of men and indicates indicates )hich )hich .e$s need need to be pressed to traverse it% Fir% 2 M%n (tr#tr% $n! n$0i$tin Sy!tem reuency
O t ; e r d e a u l t d i !p! p l a y !
$:p;a!e 6olta&e - l a rm r m m e ! !a! a & e !
a t e a n d t imi m e
C C
C o lu m n 1 S y t e m d a ta
C o lu m n 2 / i e w r e co r d !
a ta 1 = 1 Lan&ua&e
a ta 2 = 1 La!t record
O t; e r c o lu m n ; e a d i n & !
C o lu m n n ? 1 u n c titi o n
C 3 o t e A * ; e C e y w i lll l r e tut u r n to c o l u m n ; e a d e r r o m a n y m e n u c e lll l
a tat a 1 = 2 "a!!word
a t a 2 =2= 2 * i m e a n d d a te
O t ; e r ! e t tit i n & c e l l ! inin c o lul u m n 1
O t ; e r ! e tttt i n & cell! in c o lul u m n 2
O t ; e r ! e ttt t inin & cell! in c o lul u m n n
a tat a 1 = n "a!!word le6el 2
a ta 2 = n C @ - 6 o l tat a & e
a ta n = n > ? c ; a r a n & le
a t a n =2= 2 > ? 1 d i rer e c tit i o n a l
"01053a
)5
Ent%r Ent %rin in t1% t1% PASS PASS6O 6ORD RD +r +r, , !%+$ !%+$tt !i(*$ !i(*$'. '.
The rela$ has 3 levels of pass)ord access% The level of access determines )hich operations can be performed and is controlled b$ entr$ of 2 different pass)ords% The levels of access are described belo): +ccess level 8evel A No pass) ss)ord re7ired 8evel Pass)ord or 2 re7ired
8evel 2 Pass)ord 2 re7ired
Operations enabled ead access to al all setti ttings! alarms! event records and falt records +s level A pls: #ontrol commands! commands! e%g% circit brea.er open B close% eset of falt and alarm conditions% eset 8&Cs% #learing of event and falt records% +s level pls:
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The rela$ is set )ith a defalt access level of A! sch that the access level 2 pass)ord is re7ired to change an$ of the rela$ settings% 5t is also possible to set the defalt men access level to either level or level 2% The defalt men access level is set in the DPass)ord #ontrolF cell! )hich is also fond in the D,E,T&" +T+F colmn of the men 1note that this setting can onl$ be changed )hen level 2 access is enabled0% The crrent level of access can be determined b$ e'amining the D+ccess 8evelF cell or as one of the defalt displa$ options% &ntering the pass)ord and changing the access level :$. /rom the defalt displa$ press to displa$ SYSTEM DATA ntil P$((/r! is displa$ed% 7. Geep pressing follo)ed follo)ed b$ to enter the pass)ord #. Press 1++++0 ntil the P$((/r! Cntr cell is displa$ed% !. With the pass)ord entered press %. Press ! follo)ed b$ to give a defalt access level of 2%
The rela$ is no) at access level 2 allo)ing an$ setting to be changed% The pass)ord no longer needs to be entered ntil the rela$ is retrned to access level A or b$ sing the P$((/r! Cntr cell% 2)5
T%(tin %(tin t1% 7i$( 7i$(%! %! !i++ !i++%r %r%n %nti$ ti$ %%, %%,%n %nt) t)
/ailre of stator )indings! or connection inslation! can reslt in severe damage to the )indings and the stator core% /or primar$ generating plant! )here falt levels can be large in magnitde! high speed disconnection of the plant from the po)er s$stem ma$ also be necessar$ to maintain s$stem stabilit$% /or generators above "H+! it is common to appl$ generator differential differential protection% This form a protection protec tion provides fast detection of internal falts )hilst giving high stabilit$ for e'ternal falts% The P343 provides 3 forms of generator differential protection:
;iased Iigh impedance 5ntertrn
We )ill be testing the biased differential element as it is the most comple' of the three% /or more information on differential protection! inclding high impedance and intertrn protection! conslt the application application gide of of the P343 technical technical manal% manal% The follo)ing headings )ill be sed to perform this tas. :#ON/5JK+T5ON JOK JOKP P J& J&N 5 5// "&+, "&+,K K&" &"&N &NT, T, 3
1&nabling DJ&N 5//F fnction0 1Pro 1Prote tect ctio ion n set setti tin ngs for for differe ferent ntiial ele element0 1Obs 1Obser erva vati tion on of bias ias and and dif differe ferent ntia iall crr crren ents ts00
a0 8ocate ate the CONFIGURATION colmn and then enable DG%n Di++%r%nti$8% &nsre that all other protection fnctions are disabled in this colmn% b0 8ocate the GROUP GEN DIFF colmn and then appl$ the follo)ing settings:
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
AA m+ Jeniff . AL Jen iff 5s2 %2AA + Jen iff .2 >A L The operation of differential trip signals can be sho)n in the Test Port ,tats cell in the #ommission Test men% The Test Port bits can be set to the appropriate ; nmber sing the "onitor Port - men cells 1iff Trip + - ;4! iff Trip ; - ;42A! iff Trip # - ;42! iff Trip - ;40% c0 #onnect #onnect the circit circit as sho)n sho)n in in the the /igre /igre 3 belo) belo)%%
I1 I1 C3 IA IA C2 P343
I2 I2
E3 IA IA2 E2
Fir% 3 Cnn%#tin !i$r$, +r 7i$(%! !i++%r%nti$ t%(t
d0 ,lo)l$ increase the crrent 5 ntil the rela$ operates )hilst leaving leaving 52 at A +mps% +mps% ecord the operating opera ting crrent 5 in the table provided% We have no) no ) assessed ass essed the t he minimm sensitivit$ of the rela$% This gives an indication of the crrent re7ired to case operating for a genine genine internal falt% falt% Notice that the rela$ does not operate at e'actl$ the 5s setting bt at a vale slightl$ higher% This is de to a small amont of bias being generated b$ the 5 crrent! )hich inevitabl$ raises the rela$ setting% The actal minimm sensitivit$ is given b$ the follo)ing e7ation :"inimm Pic.-p crrent =
.- 5s2
.-
5s-
The ne't phase of testing a bias differential rela$ is to establish that the bias characteristic matches the rela$ settings% This is done b$ adjsting the magnitde of the t)o anti-phase crrents 15 and 520 ntil the rela$ operates% +t the point of opera tion the differential differential and bias crrents can be calclated calclated and plotted to see if the$ correlate )ith the rela$ settings% settings%
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Note that the per phase bias and differentia differentiall crrent can be observed observed in the "&+,K&"&NT, 3 colmn% 5nitial 5
52
A A%3 AD A%6 AD %2 AD %4 AD %> AD
A A%3 AD A%6 AD %2 AD %4 AD %> AD
5 Trip
A%4 A%* %6 3 3%*
;ias #rrent = 15 Trip M 520B2
ifferential #rrent = 5 Trip ( 52
A%3> A%6> %4 2%2 2%6
A% A% A%4 %6 2%2
/or the lo)er bias slope the formla belo) can be sed to determine the differential operate crrent c rrent 1enter . slope in p p form! i%e% percentageBAA0: phase operate crrent is 15s M 5;ias ' .0 p MB- AL /or the pper bias slope the formla belo) can be sed to determine the differential operate crrent c rrent 1enter . and .2 slopes in p form! i%e% percentageBAA0: Operate crrent is 15;ias ' .20 M 1. ( .20 ' 5s2 M 5sQ p MB- 2AL
3.5
3 . ( 2.5 * , A t 2 n % r r " C1.5 & $ i t n % r 1 % + + i D 0.5
Expected Characteristic
0 0
0.5
1
1.5
2
2.5
3
3.5
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
everse 8o) for)ard Over po)er
We )ill be testing the reverse po)er and lo) for)ard po)er protection featres% The over po)er protection is tested in similar )a$ to the reverse po)er )hich is )h$ it has been omitted omitted from these test instrctions% The follo)ing headings )ill be sed to perform this tas. :#ON/5JK+T5ON JOKP POW& "&+,K&"&NT, 2
1&nabling DPo)erF f fnction0 1Protection settings fo for po)er pr protection0 1Ob 1Observati ation of of th the th three ree ph phase po)er0
R%0%r(% P/%r Prt%#tin
a0 8ocate ate the CONFIGURATION colmn and then enable DP/%r8% &nsre that all other protection fnctions are disabled in this colmn% b0 8ocate the GROUP PO6ER colmn colmn and then appl$ the follo)ing settings: Operating "ode Jenerating Po)er /nction everse -PR ,etting 3A%A W Po)er Time ela$ As
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Po)er O Timer As P Poledead 5nh &nabled Po)er2 /nction isabled f0 The operation operation of po)er po)er startBtrip signal signalss can be be sho)n sho)n in the the Test Test Port ,tats cell in in the #ommission Test men% The Test Port bits can be set to the appropriate ; nmber sing the "onitor Port - men cells 1Po)er Trip - ;4*>! Po)er 2 Trip - ;4*6! Po)er ,tart ( ;>>! Po)er 2 ,tart ( ;>60% c0 #onnect #onnect the circ circit it as sho)n sho)n in the /ig /igre re 4%
IA IA I' I' IC IC N
C3
P343 IA IA
C2 C)
I' I' C5 C,
IC IC
Test &et C+
%A
C1,
%A
%' %C N
C20
%' C21
C22 (5
Timer
%C
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
g0 isconnect isconnect the timer stop leads leads from the the rela$ then appl$ appl$ the same voltages! voltages! )ith the follo)ing crrents: 5a = +AS! 5b = +6AS! 5c = +-6AS% Note that the rela$ operates strongl$ as the po)er 1>AW0 is )ell )ithin )ithin the operating region of the characteristic% h0 otate the phase angle angle of the three crrents cloc.)ise! cloc.)ise! maintain maintaining ing their 2AS 2AS phase relationship! ntil the rela$ stops operating% This is indicated b$ the D+n$ ,tartF 8& s)itching s)itching off 18& 0% eset the trip indications indications and then rotate bac. in to the characteristic ntil the rela$ operates once again% Note this angle do)n% i0 epeat epeat section DhF DhF e'cept e'cept rotate anti-cloc.) anti-cloc.)ise ise this this time% time% Once again again note the angle% angle% The measred angle shold be e7al indicating the characteristic is s$mmetrical! as sho)n in the /igre >% % %Ar
15 150%A
T*IP
*E&T*AIN
/ /
T*IP
Po#er &ettiin-
*E&T*AIN
15 15/
.% .%Ar
Fir% : R%0%r(% */%r #1$r$#t%ri(ti#
,electing D"otoringF in the DOperating modeF cell inverts the active po)er measrement% measrement% This effectivel effectivel$ $ reverses the po)er characteristic so that it )old appear on the DMWF side% The ne't step is test the DPo)er O timerF% This stops the DPo)er Time ela$F timer from resetting if the po)er momentaril$ e'its the characteristic% /lctating po)er is common common )ith diesel engines engines prime prime mover failr failres% es% ;$ setting a time dela$ dela$ on on reset the rela$ ma$ still operate even if the po)er flctations are severe%
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
is correct and that the rela$ is fll$ resetting follo)ing the DPo)er O TimerF% /igre 6a sho)s the operation opera tion of the rela$ nder this condition% condition% The ne't stage is to prove that the rela$s operating level level is held held for the DPo)er O TimeF% This is done b$ appl$ing a reverse po)er condition for! sa$! > seconds follo)ed b$ a for)ard po)er condition for 2 seconds seconds and then a reverse po)er condition condition once again% 5f the rela$ operate level is held correctl$! )hen the falt is re-applied the operating time )ill be shorter% 5n theor$ the operating time shold be e7al to the DPo)er Time ela$F setting mins the dration of the first falt application% Io)ever! in practice the operating time ma$ be even shorter shorter as most test sets ta.e a finite finite length of time time to move from a for)ard po)er condition to reverse po)er condition and bac. again% This means that the rela$ ma$ be in the reverse po)er condition longer than e'pected% /igre 6b illstrates the rela$ behavior for these falt conditions%
Trip
Trip resho$d a a$ton
,tead$ reverse po)er condition
a0 OpTime1 e10s
Trip
Trip resho$d a a$ton
a a$ton
/lctating reverse po)er condition
b0 5s 5s
5s 5s 2s 2s
Fir% ; A**i#$tin + +#t$tin r%0%r(% */%r
n0 +ppl$ the follo)in follo)ing g crrents for appro'imatel appro'imatel$ $ > seconds: A%>+AS! 5b =
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
o0 "odif$ "odif$ the fol follo) lo)ing ing settings: settings: Po)er /nction 8o) /or)ard P ,etting 2 W Po)er Time ela$ As Po)er O Timer As p0 +ppl$ the follo)ing follo)ing voltages: Ha Ha = >AH AS! Hb = >AH -2AS! Hc = >AH2AS 70 +ppl$ +ppl$ the follo follo)in )ing g crrent: crrent: 5a = A%2+ A%2+AS! 5b = A%2+ -2AS! 5c = A%2+2AS% This represents a for)ard f or)ard po)er of 3AW% 3AW% r0 ,lo)l$ ,lo)l$ decrease decrease the crrent crrent ntil ntil the rela$ rela$ operates% operates% Operation Operation shold shold occr occr at appro'imatel$ at A%A+% This corresponds to a 3 phase for)ard po)er of 2W% 4)5 4)5
Fi% Fi%! ! +$i +$ir r%% *rt *rt%# %#ti tin n))
#omplete loss of e'citation ma$ arise as a reslt of accidental tripping of the e'citation s$stem or even open circit or short circit falts occrring the # s$stem% 8oss of the e'citation cases the internal emf emf to collapse c ollapse and and the redction of active po)er otpt% Knder this condition the generator can over-speed and dra) rea ctive po)er from the s$stem% The difference in speed bet)een the rotor and the s$stem cases lo) fre7enc$ crrents to flo) in the rotor circit! )hich ma$ reslt in damage to the machine depending pon its constrction% The P342 and P343 tilises a mho characteristic to
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
#ON/5JK+T5ON 1&nabling D/ield /ailreF fnction0 JOKP /5&8 /+58K& /+58K& 1Protection settings for field field failr failre0 e0 a0 8ocate ate the CONFIGURATION colmn and then enable DFi%! F$ir%8% &nsre that all other protection fnctions are disabled in this colmn% b0 8ocate the GROUP FIELD FAIL colmn and then appl$ the follo)ing settings: //ail +lm +lm ,tats ,tat s &nabled //ail +lm +ngle >%A deg //ail +lm ela$ As //ail ,tats &nabled //ail (Ua 2A Ohm //ail Ub 22A Ohm //ail Time ela$ As //ail O Timer As
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
g0 +ppl$ +ppl$ the follo) follo)ing ing voltage voltage and crrent: crrent: Ha Ha = AAH AS! 5a = A%2>+ MAS% The applied impedance is at position D+F of the polar diagram in /igre % h0 5ncrease the crrent ntil ntil the rela$ operates% This shold occr at roghl$ A%42+ 1AAHB122AM2A00 and indicates indicates that )e are no) at the oter edge of the circle ( point D;F 1UaMUb0% i0 5ncrease 5ncrease the crrent crrent to A%>+% The The rela$ rela$ shold shold be operatin operating g strongl$ strongl$ as the rela$ rela$ impedance is no) at point #% j0 otate the phase angle of the crrent anti-cloc.)ise anti-cloc.)ise ntil ntil the rela$ rela$ drops off off and it is possible possible to reset it% ,lo)l$ rotate the crrent phase angle cloc.)ise cloc.)ise ntil ntil the rela$ rela$ jst jst operates again% ecord the phase angle bet)een the crrent and voltage 1 on the polar diagram0% diagram0% .0 Withot changing changing the magnitde magnitde of the crrent and voltage! rotate the crrent phase phase angle cloc.)ise! passing throgh the operating area! ntil once again it is possible to reset the rela$% ,lo)l$ rotate the crrent phase angle anti-cloc.)ise ntil the rela$ again jst jst operates% operates % "easre the ne) angle! 2 on the polar diagram% The rela$ characteristic angle is the mean of the t)o measred angles and shold be roghl$ AS% l0 +ppl$ +ppl$ the follo follo)in )ing g voltag voltagee and crrent: crrent: Ha = AHAS! 5a = %A+ MAS% The applied impedance is at position DF of the polar diagram% m0 ,lo)l$ increase the voltage ntil ntil the rela$ again again jst operates% This shold shold occr at 2AH 12AohmB+mp0% The rela$ impedance is no) at point D&F! ths proving that the characteristic has the ccorrect orrect dimension dimensionss and position%
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
:)5 :)5
T1%r T1 %r,$ ,$ 0%r 0%r $! $! *r *rt%# t%#ti tin n))
Overloads can reslt in stator temperatre te mperatre rises that e'ceed the thermal limit limit of the )inding inslation% &mpirical reslts have sho)n that the life of the inslation is halved for each AS# rise in temperatre above the rate d vale% Io)ever! the life of the inslation is not )holl$ dependent pon the rise in temperatre bt on the time the inslation maintained at this elevated temperatre% This means that short overloads ma$ case little damage to the machine )hereas sstained overloads ma$ case e'tensive damage to the )indings and inslation% Knbalanced load )ill also give rise to rotor heating de to the negative se7ence se7ence created% The P343 rela$ models the time-crrent thermal characteristic of a generator b$ internall$ generating a thermal replica of the machine% ;oth the positive and negative se7ence crrents are combi c ombined ned together to form an e7ivalent e7ivalent crrent 15e70% We )ill be testing the thermal characteristic )ith both positive and negative se7ence crrents% The follo)ing headings )ill be sed to perform this tas. :#ON/5JK+T5ON JO JOKP TI& I&"+8 OH& H&8O+ 8O+ "&+,K"&NT, 3
1&nabling DThermal OverloadF fnction0 1Pro 1Prote tect ctio ion n sett settiings for for ther therm mal0 al0 1Observation of thermal state0
a0 8ocate ate the CONFIGURATION colmn and then enable DT1%r,$ O0%r$!8% &nsre that all other protection fnctions are disabled in this colmn% b0 8ocate the GROUP THERMAL O>ERLOAD colmn and then appl$ the follo)ing settings: Thermal &nabled
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The operation of Thermal alarmBtrip signals can be sho)n in the Test Port ,tats cell in the #ommission Test men% The Test Port bits can be set to the appropriate ; nmber sing the "onitor Port - men cells 1Thermal OB8 Trip ( ;4! Thermal +larm ( ;3A*0% c0 #onnect #onnect the circ circit it as sho)n sho)n in the /ig /igre re %
IA IA Test &et
I' I' IC IC N
C3
P343 IA IA
C2 C)
I' I' C5 C,
IC IC C+
Fir% ? Cnn%#tin !i$r$, +r t1%r,$ t%(t(
d0 8ocate ate th the MEASUREMENTS 3 colmn and then scroll do)n to displa$ the DThermal OverloadF measrement% e0 +ppl$ +ppl$ the follo follo)in )ing g crrents crrents to the rela$ rela$:: 5a = %A+ %A+AS! 5b = %A+-2AS! 5c = %A+2AS% Notice that the rela$ thermal measrement measrement reaches roghl$ 63%2L after minte 1 time constant0 and 6%>L after 2 12 time constants0 mintes this time% This proves that the rela$ is correctl$ modellin modelling g the e'ponential e'ponential temperatre rise of the protected plant 1cable! 1cable! transformer etc%0% ,)itch the crrent off after after 2 mintes% Iad
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Prefalt load
5p
5 52 " Therm ermal 5R
=
Thermal 5
= Positive se7ence crrent = Negative se7ence crrent = Negative se7ence mltiplier = Ther Therm mal ,etti etting ng = heating time constant in seconds
Therefore )ith no negative se7ence: 5e7
=
22 3 A2 -=A
= 2+
With no pre falt crrent the operating time 1top0 is calclated calclated as follo)s :-
2 2 A = *%26 seconds top 6A 8og e 2 2
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Fir% 5 R%$' t1%r,$ (t$t% +r int%r,itt%nt +$t(
.0 8ocate the the Deset Deset Therma ThermalOB lOB8F 8F cell cell in the MEASUREMENTS 3 colmn and then select $es to reset% We )ill no) test the rela$s behavior )hen negative se7ence is applied instead of positive se7ence :l0 +ppl$ +ppl$ the follo follo)in )ing g crrents crrents and and )ait for for the rela$ rela$ to trip: 5a = 2%A+AS! 5b = 2%A+2AS! 5c = 2%A+-2AS% The injected crrents represent re present 2+ of pre negative se7ence% The rela$ shold trip and displa$ a thermal trip in appro'imatel$ >%22 seconds% The rela$ operating time is given b$ the follo)ing e7ation :Therefore )ith no negative se7ence: 5e7
=
A2 3 2 2 -=A
= 3%46+
With no pre falt crrent the operating time 1top0 is calclated calclated as follo)s :-
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
a0 8ocate ate the CONFIGURATION colmn and then enable D>BH8% &nsre that all other protection fnctions are disabled in this colmn% b0 8ocate the GROUP >OLTSBH >OLTSBH colmn and then appl$ the follo)ing settings: +lm ,tats isabled Trip /nc T Trip ,et 2%2 HBI Trip ela$ As c0 +ppl$ +ppl$ the follo follo)in )ing g voltage voltages: s: Ha Ha = >AHAS! Hb = >AH -2AS! Hc = >AH2AS% These voltages mst be applied at >AI% &nsre that the timer stop leads are disconnected% d0 5ncrease all three voltages ntil the rela$ operates and displa$s displa$s HBI trip% Operation shold occr at appro'imatel$ 63%>H 1AHB 30 as the rela$ is measring a phase to
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
To ensre the characteristic is correct it is prdent to chec. at least one more point on the crve: j0 eset the rela$ then appl$ Ha = *6HAS! Hb = *6H -2AS! Hc = *6H2AS% This e7ates to roghl$ %2 %2 times the setting! ths giving an operating time of >%3 seconds% L of the stator )inding% &arth falts in the final >L of the )inding )ill reslt in sch lo) falt crrent and voltage imbalance imbalance that conventional conventional protection cannot be relied pon to detect the falt% The P343 provides emplo$s a techni7e )hereb$ the rela$ loo.s for changes in the amont of third harmonic being prodced b$ the generator% Knder normal conditions the third harmonic voltage is distribted evenl$ along the stator )inding% ring an earth falt the in the final >L of the )inding the third harmonic voltage )ill rise significantl$ at the generator terminals% terminals% 5f the HT )ere connected at a t the generator termina t erminals ls the third harmonic voltage rise cold be detected% Io)ever! if the voltage from a netral earthing HT )ere applied to the rela$ then this )old see the third harmonic voltage collapse% Therefore the rela$ has t)o settings! set tings! these are overvoltage mode for a terminal HT and and ndervoltage mode for a netral earthing HT%
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
%ariac C1,
24 240% 0( 0(;<
%A
%1 C20
%' P343
C21
F C22
Test &et 1 150(;<
%A %N
%C
C23
C24
%N
Fir% Cnn%#tin !i$r$, +r 55@ (t$tr EF t%(t(
d0 Ksing the tests set appl$ >H at >AI% ,lo)l$ ,lo)l$ increase the voltage ntil ntil the rela$ rela$ operates and indicates indicates a AAL stator &/ trip% Operation shold occr at a t 2AH
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
h0 ,lo)l$ ,lo)l$ decrease decrease the voltage voltage on the test set 1>AI0 ntil ntil the rela$ rela$ operates% operates% This This rd shold occr a roghl$ volt and proves the 3 harmonic ndervoltage is )or.ing correctl$% i0 ,)itch off off the variac and chec. chec. that it is possible possible to reset the rela$ rela$% This This ensres that the nder voltage inhibit featre is correctl$ fnctioning% Knfortnatel$ de to limitations in the test e7ipment it is impossible for s to test the nder po)er inhibits inhibits on the AAL stator earth falt protection% The nder po)er inhibits )o. in e'actl$ the same )a$ as the nder voltage inhibit e'cept that there needs to be a certain amont of Watts! H+ and H+r@s flo)ing before the protection is enabled%
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The regions to 4 are sho)n in figre 2 together )ith an illstration of the rela$ settings% We )ill be proving the characteristic shape as )ell as the rela$ abilit$ to detect a genine pole slip slip condition% condition% The follo)ing headings )ill be sed to perform this tas. :#ON/5JK+T5ON JOKP PO PO8& ,8 ,85PP 5PP5NJ
1&nabling DPole ,lippingF fnction0 1Prot Proteecti ction set setttings fo for po pole sl slipping0
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
=o =one2 =A =A100oh 0ohms
=o =one2
* e c a a c t t n n c c e e $ i n e e
= C 3 5 0 0 o h s m
85 856
.* .*
*
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
P,lip c >A Ohms one ,lip #ont one 2 ,lip #ont 2 P,lip eset Time 3A%AA s
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
g0 otate the angle of the crrent crrent 15 lead H0 ntil ntil 8& 8& 3 illmi illminates nates 1in 1in addition addition to 8& >0 indicating that the impedance has entered the lens% This shold occr at roghl$ 42S% The impedance is no) at point D;F% h0 #ontine to rotate the crrent ntil the impedance impedance crosses the blind blinder er at A>S indicated indicated b$ 8& 4 illmi illminati nating% ng% The The impedance impedance is no) at point D#F% ,)itch off off the crrent and voltage and notice that the 8&@s trn off% i0 Withot ithot modif$ modif$in ing g the voltage! voltage! appl$ appl$ the follo)i follo)ing ng crrents: crrents: 5a = A%6+ AS! 5b = A%6+6AS! 5c = A%6+-6AS% This represents an impedance of A AS% The impedance is no) at point D&F on the polar plot% Notice that 8&@s 4 and > illminate% j0 ecrease the angle of the crrent 1to)ards point DF0 ntil ntil the rela$ 8& 3 illminates% This shold occr at appro'imatel$ 6S and indicates that the impedance is at position DF% Once again s)itch off the crrent and voltage noting the 8&@s trn
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
P% Si**in T%(t
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
View more...
Comments
