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LCI CHANNELS FOR VFD - COMPENDIUM OF FAULTS

EQUIPMENT :

LOAD COMMUTATED

INVERTER (VFD)

DOCUMENT : COMPENDIUM OF

FAULTS/ALARMS

DOCUMENT NO. : 441/COMPEND/LCI REV.02 DTD.10/03/05

Wh! "#""$!% &' '*+&$'! #'" ,"'-* &h ,"&$+*" &%'" '#

F+*& /A*" $ &' - !. F+"&h" ,* *' " !"* h

Ch #'" %"'+! #+*& L' C'+&&$'! F$*+" L' PLL F+*& !

SEM E"&h$!% '+!& & &h ! '# &h$ '+!&.

REVISION ISTOR6 SEET

NATURE OF CANE

REV.NO./ DATE PREPARED 76 CEC

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FIRST ISSUE

UPDATED UPTO 09.0.04

UPDATED UPTO 10.03.05

00 /25.03.04

01 /09.0.04

02 /10.03.05

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Category Sl!o Pro"le# Sol$t%o!

MISC1 S#all &ra&' o"(er)e* %! "a(e of 1 !o CT %! Loa*

+rea' S,%t& Pa!el

Fa%l$re of CT(

Te .r%#ary &o!!e&t%o!( o! te CT( are ($& tat loa* of

te C$ "ar( %( &o#%!g o! te CT( Terefore !e&e((ary to.ro)%*e fle/%"le &o!!e&t%o! o! o!e (%*e of te CT

C$(to#er o.%!e* tat fa%l$re #ay "e *$e to ter#al(tre((e(

T%( .o%!t ,a( ta'e! &are of ,e! re.la&e#e!t of Loa*+rea' S,%t& ,%t Co!ta&tor ,a( *o!e

MISC 2 0a('et( o! *oor( a)e ga.( at #a!y .la&e( re($lt%!g

%! a%r "e%!g ($&'e* tro$g te(e ga.( al(o

C$(to#er o.%!e* tat re.la&e#e!t of ga('et( !e&e((ary

0a('et( re.la&e* at .la&e( ,ere)er re$%re*

MMI FOR VFD MMI re#a%!( o$t of (er)%&e *$e to 3Co##$!%&at%o!

L%!' fa%l$re4

MMI (5, a!g%!g .ro"le#

Defe&t%)e l%!e *r%)er re.la&e* "y a !e, o!e

De#$lt%.le/er &a!!el( at &o!trol roo# ,ere !ot ,or'%!g

Sa#e re.a%re*

O!e ,%re of RS22 .ort ,a( fo$!* *%(&o!!e&te* (a#ere&t%f%e*

O!e ree* relay &ar* to "e re.la&e* 7fa%le* *$r%!gtro$"le(oot%!g8 MMI (y(te# .$t o!-l%!e "y.a((%!g Dr%)e

(tat$( a!* Re(et &o##a!* fro# PC

Re.la&e* ree* relay &ar* Pro"le# (ol)e*

Corre&te* )er(%o! of (oft,are %!(talle* +e&a#e O9MISC : 6A C-2 tr%..e* o! ele&tr%&al fa$lt

C$rre!t $!t%!g ,a( o"(er)e* %! C-1 a!* tr%..e* o!R .a(e O)er&$rre!t

;e! C-2 of ID Fa! 6A tr%.( &$rre!t5)oltage

$!t%!g %( o"(er)e* %! te C-1 a!* %t al(o tr%.(

1. 3LMAR04 &a!ge* fro# 2= No &a!ge

o"(er)e*

2. 3FLALEN4 a!* 3FLASEN4 &a!ge* to TRUE No

&a!ge o"(er)e*

3. Ca!ge* .ara#eter( 3CR0AIN FR0AIN FRTC

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Motor fo$!*at%o! )%"rat%o! fo$!* %ger &o#.are*

to oter #otor(

PLLTOL LIMAR04 No &a!ge o"(er)e*

4. F%!ally "y &a!g%!g PLLMODE fro# 6> to 2#V Pro"le# (ol)e*

MISC UPS ($..ly tr%..%!g o! trf %!r$( &$rre!t12>512>VAC 1. trf ,%t 2P B 2S ,%!*%!g( 1 (e&;%!*%!g fo$!* *efe&t%)e

S.e& for trf g%)e! "y EDN to TEC ,%t #(g to .ro&$retrf lo&ally S&ree! to "e .ro)%*e* "et,ee! .r%#ary a!*Se& of trf a!* S&ree! to "e earte* to .a!el fra#e

Ca!ge* tra!(for#er Pro"le# (ol)e*

MISC 1> 6A C-1 tr%..e* C-2 !ot re(.o!*%!g to (.ee*

lo,er &o##a!* fro# CRT C$rre!t a!* (.ee* of ID

fa! (t$&' 6A ta'e! o$t of (er)%&e #a!$ally a!* 6+

Para#eter SRCLSC &a!ge* to 1> a( %! (&e#e

:-2>#A (.ee* (%g!al %( !ot "e%!g re&* "y C-1 or C-2

Pro"le# %! IBC (y(te# (ol)e* 6A ta'e! %!to (er)%&e

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ta'e! %!to (er)%&e SRCLSC fo$!* to "e >@ %!(tea*

of 1> %! oter &a!!el(

MISC 11 Ero(%o! of &ool%!g t$"e( at te t%. of te

t$"e(oot at O5+ (%*e of ID Fa! #otor( Re($lte*

%! .a((%!g of e/ter!al a%r %!to #otor "o*y Motor %(

CACA &oole*

C$(to#er .ro.o(e* to re.la&e all &ool%!g t$"e( 71>

t$"e(8 A('e* for a*)%(e

Referre* to &o!ta&t +HEL5EMRP-M$#"a% for f$rter

a&t%o!

MISC 12 ID 6A C1 ? o(&%llat%!g a!* loa* &$rre!t( o!

&o!ta&tor !ot "ala!&e* 1 .a(e &$rre!t #%((%!gSo$r&e &$rre!t( "ala!&e* >IA loa* NLI+

!egat%)e $#.( #%((%!g

Tol* to &a!ge HPTF &ar* %! LTM1 or LTM:

P$l(e ,a( #%((%!g %! LTM: Ca!ge* HPTF &ar* Pro"le#(ol)e*

MISC1 Re.eate* fa$lt( %! *r%)e *$e to loo(e &o!!e&t%o! o!

SEM Ra&'

Re&o##e!*e* to %!(tall lo&' "ar( to (e&$re &o!trol &ar*(

%! te ra&'( SEM Lo&' "ar %!(talle* Pro"le# (ol)e*

MMI FOR VFD 1: MMI g ett%!g $!g fre$e!tly L %!e * r%)er( O9

After PC re"oot%!g te MMI PC &o##$!%&at%o!

get( re-e(ta"l%(e*

If .o,er goe( OFF (o#et%#e( MMI PC a!g( a( tol* "y

&$(to#er EDN ($gge(te* to .$t te MMI PC o! UPS (o

tat t%( ,%ll !ot o&&$r MMI .$t o! UPS Pro"le# (ol)e*

MISC 1


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fl%&'er( Fl%&'er%!g (to.( after (o#et%#e a!*

&a!!el "e&o#e( O9 Ca!!el tr%.( after fe, *ay(

S$gge(te* to lo,er te )al$e( of MTRFMIN a!* FLUS %!

(te.( of >>1 a!* %f !ot ($ff%&%e!t aga%! %! (te.( of >>


7/66



LOAD

COMMUTATION

FAILURE

1 Ca!!el tr%.( o! Loa* Co##$tat%o! fa%l$re 1. HPTF &ar* %! LTM fo$!* fa$lty ,e! *o%!g &ro,"arte(t HTPF &ar* re.la&e* Pro"le# (ol)e*

2. +HEL a( ($gge(te* to #a%!ta%! &o!trol roo#

te#.erat$re at 2


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oter &a!!el te !e$tral gro$!*%!g of R-C &%r&$%t ,a(

!ot O9 Pro"le# %! "ot &a!!el( (ol)e*

MISC 6 Catter%!g of MAMS relay %! (la)e &a!!el A*$(te* off(et ero %! NLI+ Loa* FA+F+CFCA "y "a&'

&arg%!g fro# Ma(ter Pro"le# (ol)e*

MISC @ HMP0DMP+ %! :+1 g%)%!g +$(og after fe, o$r(

%! (er)%&e

HMP05DMP+ &ar* re.la&e*

Pro"le# (ol)e*

0ROUND FAULT VFD 0ro$!* Fa$lt .ro"le# %! (la)e &a!!el See te/t o! gro$!* fa$lt at te e!* of t%( *o&$#e!tCa"le %!($lat%o! ,a( fo$!* fa$lty o! &a"le fro# &o!ta&tor

to #otor *$r%!g %-.ot te(t to eart Pro"le# (ol)e*

MISC Ma(ter a!* Sla)e "ot (tart a!* r$! %!*%)%*$ally At#%!%#$# (.ee* (la)e *oe( !ot ta'e loa* ,e!.arallele* ,%t Ma(ter &a!!el

+a&'-&arge* (la)e ,%t (o$r&e "rea'er o.e! a!* loa*Co!ta&tor &lo(e* A*$(te* FA+ F+C FCA o! NLI+-loa*o! (la)e ,%t tat of Ma(ter

Sla)e &a!!el .arallele* O9 Pro"le# (ol)e*

MISC 1> C-1 tr%..e* "$t !o a!!$!&%at%o! o! te *oor

#o$!te* .r%!ter or at re#ote CBI

I!%t%ally ($(.e&te* tat Sto. &o##a!* ,a( "e%!g %(($e*

fro# CBI (y(te# "$t fo$!* t%( ,a( !ot tr$e Ca!!el

(ele&tor (,%t& a!* Lo&al5Re#ote (,%t& o! IOMA ,ere

"y.a((e* "$t tr%..%!g( &o!t%!$e* Tr%..%!g( ,ere re.orte*at reg$lar %!ter)al(

La.to. PC ,a( te! &o!!e&te* to HMP0 Fo$!* tatM%&ro.ro&e((or ,a( gett%!g re(et e)ery t%#e te *r%)e

tr%..e* T%( ,a( e)%*e!t fro# te La.to. *%(.lay

T%( &o$l* a..e! o!ly %f LVSH fro# PSFF goe( H%g

PSFF ($..ly ,a( &lea!e* "y "lo,%!g a%r Ca!!el .$t %!to(er)%&e a!* !o tr%..%!g( o"(er)e*

PSFF &a!ge* a( .er &$(to#er re$%re#e!t No f$rtertr%..%!g( o"(er)e*

MISC 11 1 After o)era$l%!g ,e! ID Fa!-+ ,a( (tarte* %t

"e&a#e ON B OFF #a!y t%#e( o! %t( o,! ;e! fa!(.ee* ,a( %!&rea(e* %t "e&a#e !or#al Aga%! ,e!

Pro"le# %( tat C-2 %( !ot go%!g to LMODEJ Te

rea(o! %( tat te fl$/ le)el( %! te #a&%!e %( le((er ta!te )al$e( (et for FLUS a!* MTRFMIN

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te &a!!el ,a( (tarte* after (tat%o! tr%..%!g (a#e

.ro"le# o&&$rre* 2 ;e! C-2 ,a( (tarte*Dr%)e re&e%)e* ON &o##a!* a!* too' loa* al(o "$t

OFF (tat$( *%* !ot go fro# te *e(' ,%le RUN

%!*%&at%o! ,a( a..ear%!g o! te VFD .a!el Te!

C-1 ,a( (tarte* f%r(t a!* C-2 (tarte*tereafter No, *r%)e (tarte* !or#ally

Follo,%!g ($gge(te*K

D$r%!g te !e/t ($t*o,! "a&'&arge C-2 a!* a*$(tNLI+ Loa* Fl$/ )al$e( to te (a#e a( %! C-1 Al(o .lea(e

&e&' te FLUS MTRFMIN a!* FRSTART )al$e( %! C-2

are te (a#e a( %! C-1

Start #otor fro# C-2 a!* .lea(e &e&' #otor goe( toLMODEJ

SPD a!* SPM .ot( o! NLC+ *o !ot #atter for .ro.er

(tart%!g of te *r%)e

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MISC 1 D$r%!g Start-$. o.erat%o! ID Fa! a( tr%..e* o!

3So$r&e O)er&$rre!t4 o! &a!!el C-1 a!* Loa*

O)er&$rre!t4 o! &a!!el C-2 O)er&$rre!t relay(o.erate* o! loa* "rea'er (,%t&

Re(tarte* te *r%)e "$t aga%! tr%..e* o! te (a#e

fa$lt LMODE o! HHT !ot &a!ge* fro# G>

1. Co!*$&te* all te(t(-fo$!* O9 R$! %! Lo&al #o*e a!*

#otor %! $!&o$.le* &o!*%t%o! O9

Motor &o$.le* "a&' a!* (tarte* *r%)e ,%t (l%gtly%ger CRSTART B FRSTART Motor (tart a!* r$! ,a(

O9 fro# "ot &a!!el( Nor#al%(e* CRSTART B

FRSTART to or%g%!al )al$e(T%( .e!o#e!o! a..e!( after lo!g ($t *o,! ,e!o%l f%l# $!*er fa! "ear%!g !ot "$%lt-$. or %!let *a#.er

%!let a!* o$tlet gate( !ot .ro.erly &lo(e* *$r%!g (tart

C$(to#er a( "ee! a('e* to &e&' te(e .o%!t(

MISC 2 Ca!!el tr%..%!g (e)eral t%#e( *$e to )ar%o$( fa$lt( C$(to#er feel( tat # oter "oar* % ( !ot g %)%!g . ro.er

&o!ta&t to SEM #o*$le( ,%& &a$(e( fre$e!t tr%.( Ha(re$e(te* to &a!ge all #oter "oar*( or .ro)%*e

alter!at%)e #o*%f%e* fe#ale &o!!e&tor( %! #oter "oar*

+HEL-EDN (e!t SEM lo&' "ar( to &$(to#er a!* te (a#e

,a( %!(talle* o! all SEM #o*$le( Pro"le# (ol)e*

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LCI CHANNELS FOR VFD ? COMPENDIUM OF FAULTS


MISC 1 ID Fa! 6A ($**e!ly got $!loa*e* e)e! to$g #otor

&o!ta&tor( are ON ID Fa! 6A &$rre!t( ($**e!ly

*ro..e* to eroFD Fa! 6A *%* !ot tr%. o! %!terlo&' ID Fa! 6A

S.ee*M%!+ot fa!( ,ere a!* tr%..e* re(tarte*

ID Fa! 6A a!* tr%..e* a!* FD Fa! 6A tr%..e* o!3ID Fa! S.ee* M%!4

22> VDC ($..ly fro# *%(tr%"$t%o! "oar* fa%le* a!*

terefore &o!ta&tor *%* !ot tr%. F$rter STOP &o##a!*

,a( %(($e* fro# IBC to "ot &a!!el( a( 22>V DC ($..lya* fa%le*

F$rter &$(to#er a('e* to &e&' %! IBC (y(te# ,eterMAMS a( "ee! ta'e! for MFT1 MFT2 MFT %! FSSS

for ID Fa! OFF C$(to#er &o!f%r#e* tat (a#e a( "ee!*o!e

PLL FAULT 2 Ca!!el tr%..%!g fre$e!tly o! 3PLL Fa$lt4 After

#a!$al re(et &a!!el &o#e( %!to (er)%&e

SEM !ot earte* .ro.erly SEM eart%!g *o!e a( .er SEM

Eart%!g *o&$#e!t Pro"le# (ol)e*

0ROUND FAULT Sla)e &a!!el tr%..e* o! 0ro$!* Fa$lt Fle/ lea*( at #otor ter#%!al "o/ a* got #elte* a!*

!e$tral .o%!t o! "$(%!g ,a( "$r!t o$t Motor (to..e*

re&t%f%&at%o! *o!e "y .$tt%!g HT I!($lat%o! ta.e

MISC : Fa! (tarte* fro# (ta!*(t%ll a!* *%* !ot (tart Fa!*%* !ot .%&' $. (.ee* a!* ,a( rotat%!g )ery (lo,ly %!

te ,ro!g *%re&t%o!

S$(.e&te* No fl$/ "$%l* $. .o((%"ly "e&a$(e of #elt%!g off%el* lea* &o!!e&t%o!( %!(%*e #otor rotor e/&%ter

STIM FRSTART CRSTART %!&rea(e* Motor Starte*

Para#eter( &a!ge* to ol* )al$e( a!* (tart tr%al( ta'e!,ere ($&&e((f$l Ol* .ara#eter( reta%!e*Rea(o!- H%g "rea'a,ay tor$eS$"(e$e!t (tart( ,ere

O9 "e&a$(e o%l f%l# ,a( for#e* "et,ee! "ear%!g #etal B

(aft&a$(%!g lo,er "rea'a,ay tor$e

LOAD


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COMMUTATION

FAILURE

tyr%(tor( ,ere (orte* o$t Re.la&e* leg #o*$le Pro"le#

(ol)e*

FAILURE TO START 6 6A C-1 (tarte* LMODE *%* !ot %!&rea(e fro# G1

#a!y t%#e( %! (.%te of &a!g%!g .ara#eter( l%'e

MTRFMIN FLUS STIM CRSTART FRSTART

et& S$(.e&te* #otor ,%!*%!g #ay "e fa$ltyCo!!e&te* C-2 ,%!*%!g of #otor to C-1 of LCI

Pro"le# .er(%(t(

Fo$!* tat (!$""er %! STM6 ,a( fa$lty Ca.a&%tor ,a(

(orte* Re.la&e* (!$""er Pro"le# (ol)e*

C$(to#er a('e* to &e&' "ear%!g al%g!#e!t o! Fa! "ear%!g

%! !e/t ($t*o,!

LOAD

COMMUTATION

FAILURE

@ Ca!!el tr%..%!g o! 3Loa* Co##$tat%o! Fa%l$re4 %!


13/66


Page 1 of 66


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MISC 1 1 Ca!!el +2 tr%..e* o! 3Motor I(olator !ot

&lo(e*4

2 Se&o!* t%#e tr%..e*

1. +rea'er &lo(%!g l%!' ,a( !ot lat&%!g a!* "rea'er ,a(

tr%..%!g %##e*%ately after &lo(%!g 7Me&a!%&al

.ro"le#8 +rea'er tr$&' re.la&e* a!* &a!!el (tarte*Fo$!* tat lat&%!g #e&a!%(# ,a( fa$lty Fa$lty .art

re.la&e* a!* C+ tr$&' te(te* a!* 'e.t rea*y for

(er)%&e Pro"le# (ol)e*2 Fa$lt re(ette* a!* (tarte*

LOAD

COMMUTATIONFAILURE

2 Ca!!el +1 tr%..e* o! 3Loa* Co##$tat%o! Fa%l$re4 1 Ce&'e* loa* "r%*ge &a.a&%ta!&e( for &arg%!g

&$rre!t( ,%t #egger ? O9

2. Ce&'e* MOV( of loa* "r%*ge for I!($lat%o!

re(%(ta!&e- O9

3. Ce&'e* gate .$l(e( o! HPT9 &ar* %! gate te(t #o*e

O!e HPT9 &ar* .$l(e !ot O9 Re.la&e* &ar* Pro"le#(ol)e*

MISC 3+$( og 3 error o! HMP0 &ar* I!(erte* HMP0 &ar* .ro.erly

P$t lo&' "ar( o! SEM ra&'Al(o &e&'e* ,eter EPROMS are %!(erte* .ro.erly o!

HMP05DMP+ Pro"le# (ol)e*

SOURCEUNDERVOLTA0E

: Tr%..%!g o! 3So$r&e U!*er)oltage ,e! +FP (tarte*a!* *$r%!g fa(t "$( &a!geo)er fro# $!%t to (tat%o!

So$r&e U!*er)oltage alar# a..ear( %##e*%ately "$t3So$r&e Lo, l%!e4 fa$lt a..ear( after (o#et%#e

It ,a( o"(er)e* tat (o$r&e )oltage *%.( "elo, $5) (et)al$e ,e!e)er MD+FP (tart( T%( %( "e&a$(e of )ery %g

I!r$( &$rre!t %! MD+FP Ca!ge* (o$r&e $5) (ett%!g to alo,er )al$e a( .er (%te re$%re#e!t Pro"le# (ol)e*

MISC


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+ear%!g &a!ge* a!* fa! re.la&e* Pro"le# (ol)e*

MISC 6 2 !o( te#. (&a!!er( are #alf$!&t%o!%!g He!&etr%..%!g re#o)e* Ho,e)er ,%!*%!g te#. a!*

"ear%!g te#. tr%..%!g fro# I5C .a!el %( %! (er)%&e

+HEL agree* to re.a%r te fa$lty (&a!!er( S&a!!er( (e!tto +HEL-EDN for re.a%r

MISC @ S.ee* %!*%&at%!g at VFD .a!el a!* a&t$al (.ee* are

#at&%!g S.ee* at PMS !ot #at&%!g

+HEL a( re$e(te* to a*$(t te #A rea*%!g a( .er

.ro&e*$re g%)e! %! VFD OBM #a!$al Vol1-+oo'1-Ca.ter

Cla$(e 61


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Pro&e((or !or#al%(e* a!* re(tarte*

0ROUND FAULT 1> Ca!!el tr%..e* o! gro$!* fa$lt Fa$lt re(ette* a!* &a!!el (tarte* (#ootly Pro"le# #ay

"e *$e to K

a. Loo(e &o!!e&t%o! %! loa* (%*e &o!!e&t%o!( 7"$("ar(

&o!!e&tor eart%!g l$g o! HPT9 SEM Eart%!g8

b. Loo(e &o!!e&t%o! o! (tar .o%!t of loa* (%*e f%lter

&a.a&%tor &%r&$%t

c. Ce&' )oltage (ett%!g

S%te (ay( all &o!!e&t%o!( a"o)e a)e "ee! fo$!* !or#alS$(.e&te* tra!(%e!t gro$!* fa$lt a( tere ,ere !o fa%l$re(

of &o#.o!e!t( to *ete&t te (a#e

SOURCE

COMMUTATION

FAILURE

11 Tr%..e* ,%t follo,%!g %!*%&at%o! o! .r%!to$t(K

a. So$r&e O5C " Loa* Co##$tat%o! fa%l$re & Loa*

O5C * So$r&e &o##$tat%o! fa%l$re

b. Ca!!el &o$l* !ot "e re(tarte* tr%..%!g o!(a#e fa$lt( a!* $!t%!g %! &$rre!t(

1. UPS )oltage at .a!el &e&'e* a!* fo$!* O9

2. So$r&e (%*e tyr%(tor STM: fo$!* fa%le* Re.la&e*

#o*$le STM: a!* &a!!el ta'e! %!to (er)%&e O9

MISC12 ID Fa! +-1 (.ee* ,a( lo&'e* at %! r$!!%!g &o!*%t%o! HMP0 fo$!* a!ge* HMP0 re(ette* a!* fa! (tarte*

Co$l* "e *$e to loo(e &o!!e&t%o! of HMP0

S%te a*)%(e* to .$t lo&' "ar( o! SEM Pro"le# (ol)e*

SHORTED MOTOR

;INDIN0 B LOAD

COMMUTATION

FAILURE

1 Fa! +1 tr%..e* o!&e o! a8 Loa* &o##$tat%o! fa%l$re

"8 +r%*ge f%lter f$(e &8 Sorte* #otor ,%!*%!g

Se&o!* t%#e o! a8 Loa* Co##$tat%o! Fa%l$re

T%r* t%#e o! a8 Loa* Co##$tat%o! Fa%l$re "8Sorte* #otor ,%!*%!g

1 HPT9 &ar* fo$!* fa$lty after &e&'%!g ,a)efor#( %!

gate te(t #o*e Re.la&e* &ar*

2 . tyr%(tor %! f%el* e/&%ter #o*$le a* fa%le*

Cal%"rat%o! of f%el* &$rre!t fee*"a&' ,a( ,ro!g Sa#e&orre&te* 7%! A18

I5O PRO+LEM 1: Tr%..e* o! %!*%&at%o!(K

a8 Motor I(olator !ot &lo(e* "8 RUNP #%((%!g &8

+r%*ge f%lter f$(e

Fa$lt %!*%&at%o!( ,ere fal(e Fa$lt re(et a!* *r%)e

re(tarte* S$(.e&te* UPS fee*er ($..ly .ro"le#

I5O PRO+LEM 1


17/66


" STARTP5RUNP #%((%!g

MISC16 Ca!!el tr%..e* 11'V So$r&e "rea'er tr%..e* o!

IDMT O5C .rote&t%o! relay No %!*%&at%o! o! VFD

"efore tr%..%!g

Relay re(ette* a!* &a!!el re(tarte*Malf$!&t%o!%!g of IDMT relay ($(.e&te*

MISC 1@ HD of To "e

&o!f%r#e*

> HD for Ca!!el tr%..e* ,%t +$(og Le* o! HMP0 Sa#e !otre(ett%!g

Re.la&e* HMP0DMP+ Ce&'e* tat te 6 !o( ofEPROM( are %!(talle* &orre&tly Pro"le# (ol)e*

SHORTED MOTOR;INDIN0

21 Ca!!el tr%..e* o! 3Sorte* Motor ,%!*%!g4 1. Ce&' tyr%(tor ealt%!e((-O9

2. Re(et a!* re(tarte* - tr%..e*

3. Dry (ol*er %! )oltage atte!$ator &%r&$%t o! PTN&ar* Atte!*e* *ry (ol*er Self te(t alte* at 2 B

gate te(t al(o alte* LVSH o! NPS &ar* %! PSFF

#o*$le ,a( !ot .re(e!t NPS re.la&e* a!* re(tarte*Ce&' to "e *o!e o! +erg $#.er .o(%t%o! %! PTN *$r%!g&ar* re.la&e#e!t Ca!!el ta'e! %!to (er)%&e O9

I5O PRO+LEM 22 Ca!!el tr%..%!g o! "lo,er lo(( +lo,er (ele&t%o! &o!ta&t 3+otto# "lo,er (ele&te*4 !ot,%re* to IOMA &ar* Sa#e *o!e Pro"le# (ol)e*

MISC 2 HMP0 &ar* *%* !ot .a(( Self Te(t Ha!g( #%*,ay Re.la&e HMP0 P$t EPROM( U22 U2 U2: U22 U>a!* EEPROM( U>:U>< fro# ol* &ar* %! re(.e&t%)e (lot(

Page 1@ of 66


18/66


%! te !e, &ar* Lo&' "ar to "e .$t %! SEM Ra&' Pro"le#

(ol)e*

0ATIN0 SUPPL

UNDERVOLTA0E

2: Tr%..e* o! 0ate ($..ly $5) 1. I! gate te(t #o*e HPT9 &ar* %! LTM1 1A f$(e "lo,!

Re.la&e* a!* (tarte* O9

2 MC+ GC+2 fee*%!g ele&tro!%& #o*$le( fo$!* tr%..e*

3NTRF4 &ar* %! PS@ #o*$le fo$!* fa$lty Re.la&e*Pro"le# (ol)e*

Page 1 of 66


19/66



SOURCE

OVERCURRENT B

LOADOVERCURRENT

1 S.ee* !ot ra%(%!g "eyo!* 1:>r.# 7Rate* J

@>>r.#8 C$rre!t $!t%!g %! 2 &a!!el(

Ca!!el tr%..e* o! 3So$r&e a!* Loa* S$..re((%o!Fa$lt4

So$r&e (%*e atte!$at%o! )oltage fee*"a&' !ota)a%la"le

1. 1(t &a!!el ?C$rre!t $!t%!g *$e to %#.ro.er )oltage

fee*"a&' fro# (o$r&e "r%*ge *$e to fa%l$re of

atte!$ator %! HPTF &ar* Re.la&e* HPTF Pro"le#(ol)e*

2. 2!* &a!!el ? ;ro!g .olar%ty of &$rre!t fee*"a&'(

fro# #otor (%*e CT(3. Ca!ge* NLC+ &ar* No &a!ge o"(er)e* Or%g%!al

&ar* .$t "a&' %! ra&'

4. Ce&'e* r%""o! &a"le fro# IOMA %( .ro.erly (eate*

o! te SEM ea*er :-2>#A !ot rea&%!g SEM

Pre((e* &o!!e&tor B "e&a#e O9

5. Co!*$&te* &ro,"ar te(t Cro,"ar te(t O9

Motor ,%t "ot &a!!el( ta'e! %!to (er)%&e O9

MISC 2 Self te(t !ot go%!g tro$g Ea& t%#e te(t fa%le* %!*%ffere!t (te.(72 ra&'(8

>PAR (%g!al ,a( .$lle* *o,! "y *efe&t%)e NLI+ &ar*(Re.la&e* NLI+ &ar*( %! te 2 ra&'( Pro"le# (ol)e*

MISC HMP0 *%* !ot re&og!%(e (tat$( of r$!!%!g "lo,er(e)e! ,e! "lo,er( ,ere r$! He!&e So$r&e "rea'er

&lo(e .er#%((%)e ,a( !ot a)a%la"le

HMP0 fo$!* *efe&t%)e Re.la&e* te 6 EPROM( fro# te*efe&t%)e &ar* E!($re* tat tey are .$t %! te &orre&t

.o(%t%o! ,%t &orre&t .olar%ty Ca!!el (tarte* O9

0ROUND FAULT : Tr%..%!g o! gro$!* fa$lt ,e!e)er (.ee* ra%(e*

"eyo!* >r.# a!* #otor )olt( %( >V ,%to$t

a!y fa$lt %! #otor or &a"le

1. Re.la&e* HLC+ &ar* No &a!ge o"(er)e* Or%g%!al

&ar* .$t "a&' %! SEM ra&'

2. MOV( MOV1 MOV2 a!* MOV: fa%le* at a #$&

le(( )oltage ta! *e(%g!e*Ce&'e* ,%r%!g %! .a!el Fo$!* ,ro!g ,%r%!g Corre&te*

te (a#e Dr%)e ta'e! %!to (er)%&e O9

Page 1 of 66


20/66


MISC of 66


21/66


3+$(og4 LED o! HMP0 Ce&'e* SEM fa! *%re&t%o! of rotat%o! O9

Ca!!el ta'e! %!to (er)%&e

MISC 1> S.ar'%!g o! &o!ta&tor MISOL MISOL fo$!*

*a#age*

Clea!e* &o!ta&t ,%t (a!*.a.er a!* CTC a!* *r%)e ta'e!

%!to (er)%&e O9

MISC 11 VFD tr%.( o! $5) &o!*%t%o! of &o!trol ($..ly VFD trf 11>V511>V g%)e! for re&t%f%&at%o! (e!t to (%te

C$(to#er ,a( tol* to &e&' UPS fee*er )oltage Ca!ge*

ta. o! trf %! VFD .a!el C B EE &$"%&le fee*%!gele&tro!%&( O9

MISC 12 Refere!&e )oltage 'ee.( )ary%!g e)e! ,%t &o!(ta!t

*e#a!* (%g!al Ca$(e( Dr%)e $!t%!g

Motor (.ee* a!* &$rre!t &a!g%!g at IBC e)e!

to$g (tea*y at .a!elSPD te(t .o%!t g%)e( 1:V e)e! ,e! (.ee* %( ero

Motor S.ee* a!* &$rre!t %!*%&at%o! at "ot lo&al Bre#ote are errat%&

Re.la&e* NLC+ Pro"le# (ol)e*


Re.la&e* DLC+ Pro"le# (ol)e*


MISC 1 Pr%!ter ,or'( O9 %! te(t #o*e "$t *oe( !ot .r%!t

Stat$(5Fa$lt fro# SEM

Re.la&e* Pr%!ter Pr%!ter (e!t for re.a%r to +HEL-EDN

I5O PRO+LEM 1: HRDD *oe( !ot g%)e o$t.$t LED( a!* )oltage(

&orre(.o!*%!g to e/%(t%!g (tat$(

Re.la&e* HRDD Pro"le# (ol)e* Car* (e!t for re.a%r to

+HEL-EDN

FAILURE TO START 1


22/66


fa! (.ee* *$e to &la#. o! (.ee* refere!&e fro#

IBC (y(te# 7A$to &la#.%!g8

IBC (y(te#

LOAD

COMMUTATION

FAILURE

1 Ca!!el tr%..%!g *$e to Loa* Co##$tat%o! fa%l$re

R$!!%!g !or#al after fa$lt re(et

Loo(e &o!!e&t%o!( %! te CT fee*"a&'

I#.ro.er eart%!g of SEM Ra&'

SEM Ra&' earte* a( .er SEM Eart%!g *o&$#e!t Dr%)e

ta'e! %!to (er)%&e O9

I5O PRO+LEM 1 Ca!!el tr%..%!g o! +r%*ge D%ffere!t%al Pre(($refa$lt ,e! ta'e! %!to (er)%&e

Ca!!el (tarte* after &ro((%!g #%! (.ee* &$rre!t

(tarte* $!t%!g a!* tr%..e* o! Loa* Co##$tat%o!

fa%l$re Cro,"ar te(t ,a( *o!e for .o,er &'t &e&'o!e $#. #%((%!g %! &$rre!t ,a)efor#

C$rre!t $!t%!g ,e! &a!!el ta'e! %!to (er)%&e

IOMA fo$!* fa$lty Re.la&e* IOMA

HPTF &ar* %! (o$r&e "r%*ge fo$!* fa%le* Re.la&e* a!*

"e&a#e O9

Loa* (%*e &ar*( !ot f%r%!g &orre&tly or %! (e$e!&e O!e

HPTF &ar* "ot !eo!( *%* !ot (,%t& O!5Off togeter

HPTF &ar* fa$lty Re.la&e* a!* Pro"le# (ol)e*

I5O PRO+LEM 2> ;e! RUN relay e!erg%(e* +DIFS; 7IOMA T+6-

>8 goe( %g HMP0 (e!(e( t%( a( +r%*geD%ffere!t%al Pre(($re Fa$lt B *r%)e tr%.(

To "e &e&'e* %! te(t %g of re.a%r &ell at +HEL-EDN

E!erg%(e RUN relay %! IOMA Ce&' %f TP %! HRIA72A8goe( %g .%! 22 o! SEM ea*er goe( %g fl%&'er of

LED I1< o! HISA 1+

IOMA &e&'e* %! re.a%r &ell "$t !o fa$lt fo$!* Re.la&e*

te t,o #oter "oar*( o! IOMA Rete(te* a!**e(.at&e* to (%te S$(.e&te* tra&'%!g .ro"le# o! #oter

"oar*

MISC 21 Sla)e &a!!el a!* Ma(ter &a!!el &a! %!*%)%*$ally

(tart a!* r$! +$t Sla)e &a!!el &a!!ot "e .arallele*

,%t Ma(ter If .arallel%!g %( *o!e &$rre!t %! (la)e

re#a%!( at ero

+a&'&arge Sla)e ,%t Ma(ter r$!!%!g a!* a*$(t FA+

F+C FCA o! NLI+ Loa* of Sla)e (a#e a( Ma(ter U(e te

(a#e #$lt%#eter

Fo$!* Sla)e a*$(t#e!t ,a( !ot O9 A*$(te* Pro"le#(ol)e*

Page 22 of 66


23/66


SOURCE

UNDERVOLTA0E

22 So$r&e U!*er)oltage fa$lt e)e! to$g So$r&e

)oltage %( O9

A('e* to &e&' )oltage fee*"a&' &%r&$%t fro# HPTF

atte!$ator to NSFC a!* al(o l%!e )oltage( o! NSFC"a&'.la!e Fo$!* .a(e So$r&e atte!$ator !ot O9

Re.la&e* Pro"le# (ol)e*

S%te ,a( al(o a('e* to &e&' ,eter te gro$!* .%llar o!

HPTF %( !ot loo(e 7*ry (ol*er8 "efore (e!*%!g HPTF &ar*for re.a%r

MISC 2 C-1 a!* C-2 (.ee* #eter( !ot #at&%!g S.ee* #eter *oe( !ot a)e .ot

C$(to#er a*)%(e* to a*$(t LCI *oor 1>V DC (.ee* #eter

after (ee%!g &o$!t( 1>2:J6>HJ>>r.# Tol* to a*$(t

SPM .ot o!lyPro"le# (ol)e*

MISC 2: Ca!!el tr%.( ,%to$t a!y fa$lt or alar# #e((ageRUN l%gt %( ON "$t &a!!el get( $!loa*e*

&$rre!tJ>

All SEM )oltage( O90ate te(t !ot O9 Self te(t *o!e Fa%le* %! te(t >6K

NSFC-2C Re.la&e* NSFC ?2C Pro"le# (ol)e*

Page 2 of 66


24/66



MISC 1 Ca!!el (tart( "$t g%)e( lo(( of (.ee* refere!&e

to$g :#A refere!&e %( .re(e!t

C$(to#er a('e* to &e&' IBC refere!&e M$(t "e :#A

#%!%#$#

FIELDOVERCURRENT

2 VFD F%el* O)er&$rre!t .ro"le# A*$(te* F%el* &$rre!t fee*"a&' at SEM &ar* Pro"le#(ol)e*

LOAD PLL FAULT D$r%!g (tart%!g VFD tr%.( o! 3Loa* PLL Fa$lt4

F%r%!g .$l(e( !ot gett%!g relea(e* %! 0ate Te(t#o*e e)e! to$g Self te(t .a((e(

1. Var%a"le &o#.o!e!t( o! NLI+-1C a!* 1D !ot a( .er

(&e#e2. P%!-@2 of HAIA a* got *%(lo*ge* Not #a'%!g .ro.er

&o!ta&t o! te "a&'.la!e

3. Re&t%f%e* (l!o1B2 a"o)e Pro"le# (ol)e*

FIELD

OVERCURRENT

: Ca!!el tr%..%!g o! F%el* O)er&$rre!t Ce&'e* &a"le of AC I!.$t E/&%ter ,a( gett%!g eate*

Po,er ter#%!at%o! %!(%*e te #o*$le fo$!* loo(eT%gte!e* a!* "e&a#e O9 Dr%)e ta'e! %!to (er)%&e

I5O PRO+LEM


25/66


26/66



MISC 1 Tr%..%!g o! $!*er)oltage 1. Ca!ge* C1@ o! DLI+ to >:@F fro# >>:@F D%* !ot

(ol)e te .ro"le#

2. LT ($..ly to Co!trol .a!el &a!ge* to U!%t LT +$(%!(tea* of Stat%o! LT "$(7)oltage ,%ll !ot "e (tea*y

"e&a$(e e/ter!al gr%* *%(t$r"a!&e( ,%ll get refle&te*

to t%(83. Fo$!* tat t%#er( %! Co!trol Pa!el ,ere ON *elay

%!(tea* of OFF *elay Ca!ge* t%#er( to OFF *elay

ty.e

4. Pro"le# (ol)e*

MISC 2 O!e !o tyr%(tor #o*$le o! loa* (%*e fa%le* %! +FP1>C All !o( (er%e( tyr%(tor( got (orte*

Mo*$le re.la&e* ,%t ealty .o,er #o*$le Fa$lty #o*$le(e!t to +HEL-EDN for re.a%r

MISC Sy(te# tr%..e* ,%to$t a!y a!!$!&%at%o!HMP0 a!ge* a!* te(t le* %( glo,%!g

1. Ce&' %f all EPROM( a!* EEPROMS o! HMP05DMP+are .ro.erly (eate* Fo$!* O9

2. Ce&' SEM Lo&' "ar %( .$t a!* all &ar* to. a!* "otto#

lo&'( are f%r# Fo$!* O9

3. Ce&' %f SEM fra#e %( lo&'e* to te .a!el $(%!g te L-a!gle .ro)%*e* Fo$!* O9

4. Fo$!* o$t tat e)e! to$g SEM lo&'%!g "ar %( .$t

tere %( &leara!&e "et,ee! lo&' "ar foa# a!* &ar*


27/66


A EVC ,a( !ot &o!*$&t%!g Re.la&e* B O9

2. C2-NHVL &ar* of EVC fo$!* *efe&t%)e Re.la&e* a!*

No $!t%!g o"(er)e*

3. Re.la&e NLI+ ?So$r&e &ar*

4. NHVL ? o!ly 2 la#.( fo$!* glo,%!g Ca!!el #a!$ally

tr%..e* HMP0 toro$gly &lea!e* a!* re(tarte* No

$!t%!g o"(er)e*

< . FCLIM )al$e( %!&rea(e* S.ee* #eter( for all :&a!!el( &al%"rate*

6 S.ee* reg$lator ga%! &a!ge* fro# < to 2


28/66


*e#a!* a&&elerate "eyo!* a &erta%! (.ee* a!* e/&%tat%o! &$rre!t

l%#%t %( "e%!g rea&e*

LOAD PLL FAULT B

SHORTED MOTOR

;INDIN0

11 PLL Fa$lt a!* Motor (orte* ,%!*%!g Fa$lt Loa* (%*e tyr%(tor ele&tr%&al &o!!e&t%o!( t%gte!e*

Loo(e &o!!e&t%o! of Loa* atte!$ator ,%re fro# Lo&al AC

+$("ar fo$!* Pro"le# (ol)e*

FAILURE TO START 12 Motor rotate( %! te &orre&t *%re&t%o! )ery (lo,ly

,e! r$! e%ter fro# C-1 or C-2

Motor ,a( %! (er)%&e earl%er fro# "ot &a!!el( I!*%)%*$al

&a!!el r$!!%!g ,a( al(o .ro)e* Terefore ($(.e&te*

#otorFo$!* tat DC &a"le %! #otor fro# o$t.$t of e/&%ter

*%o*e "r%*ge to #a%! f%el* a* #elte* at l$g .o%!t

+HEL-+HOPAL re.re(e!tat%)e( &alle* to (%te Ca!ge*

&a"le Pro"le# (ol)e*

MISC 1 O$t.$t Co!ta&tor ,a( !ot ol*%!g after &lo(e&o##a!* ,a( g%)e! Co!ta&tor %( M5(

Tele#a&a!%$e #a'e Mag!et%& lat& ty.e

CR1+LM21 Mag!et fa&e O9

A*$(te* &a# tat a&t$ate( te &o!ta&t( for te &o%l&o!trol &%r&$%t o! te &o!ta&tor Ca!!el ta'e! %!to

(er)%&e O9 Pro"le# (ol)e*

LOAD

COMMUTATION

FAILURE

1: Sla)e &a!!el of +FP tr%.( o! Loa* Co##$tat%o!

fa%l$re ra!*o#ly

SEM gro$!*%!g .a!el gro$!*%!g &e&'e* a!* fo$!* O9

Ca!ge* HLC+ &ar* Pro"le# (ol)e*

SHORTED MOTOR

;INDIN0

1


29/66



MISC 1 Fl%&'er%!g of LED( o! HPT9 &ar*( "ot %!

re&t%f%er a!* I!)erter %! 0ate Te(t Mo*e

Pro"le# (ol)e* "y &a!g%!g HPT9 &ar*(

+RID0E

DIFFERENTIAL

PRESSURE

2 3+r%*ge D%ffere!t%al Pre(($re4 #e((age a..ear%!g

%! te .r%!ter %! (.%te of "lo,er( r$!!%!g1. Ce&' &a"le &o!!e&t%o! fro# AFM to IO #o*$le O9

2. Re.la&e* A%r Flo, #o!%tor Pro"le# (ol)e*

LOAD PLL FAULT At rate* (.ee* fl$&t$at%o!( o"(er)e* %! #a%! .o,er

($..ly to #otor a&&o#.a!%e* "y $!"ala!&e*

e/&%tat%o! .ara#eter(Voltage (e!(e* "y VFD ,a( %ger

Motor (.ee* &o$l* !ot "e %!&rea(e* "eyo!* :>>r.#a!* VFD tr%..%!g o! 3LOAD PLL FAULT4

1. $#.er (ett%!g %! HPT9 Voltage atte!$ator &%r&$%t

&orre&te*

2. E/&%ter .a(e (e$e!&e ,ro!gPro"le# (ol)e*

EDN %!(%(te* tat VFD roo# (o$l* "e #a%!ta%!e* *$(tfree

FAILURE TO START : Ca!!el tr%..e* o! M%&ro.ro&e((or alar#

H$!t%!g o"(er)e* Cro,"ar a!* EVC te(t fo$!* O9

CRSTART #o*%f%e* fro# > to >< a!* (tarte*

H$!t%!g .er(%(t(

S!$""er "ar a((e#"ly LTM2 a!* LTM< ,ere fo$!* o.e!

Re.la&e* S!$""er +ar A((e#"ly B (tarte*

Loa* &$rre!t CT fee*"a&' &a"le71> .%!8 o! SEM ea*erfo$!* re)er(e* I!(erte* %! &orre&t *%re&t%o! Pro"le#

(ol)e*

MISC


30/66


%!.$t to te &ar* a( "ee! re*$&e* to 11>V "y a*$(t%!g

ta. .o(%t%o! to te %!.$t tra!(for#er Pro"le# (ol)e*

MISC@ Self Te(t fa%l( at 2>>1 EDN (ay( .ro"le# %( %! Self te(t &%r&$%t( o!ly S%te a('e*

to go aea* ,%t #otor r$!!%!g T%( &%r&$%t *oe( !ot a)e

a!y f$!&t%o! ,e! *r%)e %( %! (er)%&e

MISC Co$l* !ot go to 0ate Te(t #o*e Corre&te* off(et ero o! NLI+ Loa* a!* NLI+ So$r&e

FA+ F+C B FCA ,%t te(t o(&%llator ON "y (l%gtly

a*$(t%!g +AL1 a!* +AL2 .ote!t%o#eter( o! NLC+ Te!&a!ge* MTRFMIN a!* FLUS to >2 a!* >1 re(.e&t%)ely

Pro"le# (ol)e*

MISC 3MAMS relay !ot gett%!g re(et e)e! after VFD %(

(to..e* 7S.ee* %( ero8

HRDA &ar* fo$!* fa$lty Re.la&e* Pro"le# (ol)e*

MISC 1> S.ee* ($**e!ly rea&e* >r.# a!* $!%t tr%..e* o!

f$r!a&e .re(($re )ery lo,

D$e to ($**e! %g (et .o%!t fro# IBC :-2>#A (%g!al

Corre&te* .ro"le# at IBC Pro"le# (ol)e*

MISC 11 ID Fa! A$to &o!trol %( !ot ,or'%!g .ro.erly H$!t%!g

%! &$rre!t ,e! F$r!a&e .re(($re &o!troller %( .$t %!

A$to #o*e

C$(to#er a('e* to &a!ge P B I )al$e( %! PI f$r!a&e *raft

&o!troller %! IBC (y(te# Pro"le# (ol)e*

MISC 12 Co!troller )ery (lo, May *a#age VFD5#otorCleara!&e a('e* to #a'e &o!troller fa(t

C$(to#er a('e* to t%#e f$r!a&e *raft PI &o!troller at IBC(y(te# for o.t%#$# .erfor#a!&e to ($%t (y(te#

re$%re#e!t Pro"le# (ol)e*

MISC 1 VFD *%* !ot (to. ,%t Sto. &o##a!* fro# DCS

F%le* (to. P+ F%!ally (to..e* ,%t E#erge!&y Sto.

P+ fro# 66'V

S.ee* *oe( !ot )ary ,%t %!.$t (%g!al a!*

&o##$!%&at%o! to HRDA &ar* fa%l(

D$e to +$(og .ro"le# %! HMP0 S$(.e&te* loo(e

&o!!e&t%o! "et,ee! HMP0 a!* #oter "oar* o! SEM ra&'

HMP0 &lea!e* a!* %!(erte* %! ra&' Lo&' "ar .$t Pro"le#

(ol)e*

MISC 1: Dr%)e( rea&e* rate* &$rre!t( at le(( ta! rate*(.ee*

C$rre!t *ra,! at @>< r.# 7#a/8 %( e/&ee*%!g

rate* &$rre!t %! #otor(

C$rre!t l%#%t to "e ra%(e* "y ra%(%!g te )al$e of SRCLSC"y 1> to %!&rea(e te (.ee* f$rter T%( &a! "e *o!e a(

tere %( #arg%! %! #otor a!* VFD Pro"le# (ol)e*

MISC 1


31/66


Pro"le# te#.orar%ly re#o)e* after t%gte!%!g of

SEM fro!t "ar .late( Pro"le# .er(%(t( B re.eat(after 2 *ay(

Pro"le# (ol)e*

MISC 16 D$r%!g (tart%!g Sto. &o##a!* ,a( "e%!g g%)e! "y

CBI (y(te#

D$e to %ger t%#e ta'e! to a&%e)e #%!%#$# (.ee* of

1:(e&( to 6> (e&( Pro"le# (ol)e*

MISC 1@ O!e !o Neo! la#. of PTN &ar* o! loa* (%*etyr%(tor #o*$le %( !ot glo,%!g

Corre(.o!*%!g tyr%(tor fo$!* fa%le* Re.la&e* tyr%(tor#o*$le a!* (e!t fa$lty tyr%(tor #o*$le to +HEL-EDN for

re.a%r

MISC 1 C$rre!t a!* )oltage at #otor %(olator (,%t& %( !ot

#at&%!g ,%t te &orre(.o!*%!g )al$e( at &o!trol

a!* e/&%tat%o! .a!el

Tere ,%ll "e *%ffere!&e %! %!*%&at%o! $.to 2


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7. Pro"le# ,a( (ol)e*

MISC 21 Fa! tr%..e* ,%t Motor O)erte#.erat$re Alar# a!*O)erte#.erat$re Tr%. Fo$!* MC+( C+1 C+2 C+:

a!* C+1 %! &o!trol .a!el tr%..e* ,%to$t a&t$al

te#. r%(e %! #otor

S$"(e$e!tly #otor *%* !ot (tart a!* 3Rotor.o(%t%o! (tart alar#4 ,a( o"(er)e*

1. Co$l* a)e "ee! o!ly *$e to fa$lt %! te &%r&$%t&o!!e&te* to C+1 "rea'er Ce&'e* all a$/%l%ary

&%r&$%t( %!&l$*%!g 11>V &o!ta&tor( &o!!e&te* to C+1

"rea'er for ealt%!e((.

2 Motor o.e!e* a!* %!(.e&te* Fo$!* e/&%ter ,%r%!g a*(oot &o)er%!g at (o#e (.ot(

E/&%ter (tator ,%!*%!g ro$!* &ar"o!%(e* Motor!ee*( to "e re.a%re*5re.la&e* ,%t !e, o!e Motor

(e!t to +o.al for re&t%f%&at%o! of e/&%ter rotor

Re&e%)e* "a&' at (%te

LOAD

COMMUTATIONFAILURE

22 Ca!!el tr%..%!g %!ter#%tte!tly o! Loa* Co##$tat%o!

fa%l$reCa!!el tr%..e* aga%! after fe, o$r(

Self te(t &o!*$&te* S.ee* fee*"a&' &%r&$%t fo$!*

#alf$!&t%o!%!g %! NLC+5DLC+

Cro,"ar te(t &o!*$&te* C$rre!t fee*"a&'( O5C.rote&t%o! &%r&$%t( &e&'e* a*$(te* a!* (tarte*

Ca!!el tr%..e* o! 3Loa* Co##$tat%o! fa%l$re4 aga%!after fe, o$r(

HMP0 < !o( of NTDA &ar*( &a!ge*

Loa* (%*e "r%*ge tyr%(tor( (!$""er &'t CT &%r&$%tgat%!g &%r&$%t( &e&'e* All ter#%!at%o!( o! HPT9 a!*

NTDA &ar*( &e&'e* for loo(e &o!!e&t%o!( a!*

(ol*ere*5t%gte!e*5re.la&e* ,ere)er re$%re*

DLC+ re.la&e*

F%r%!g .$l(e( a!* loa* (%*e HPT9 &ar*( NSFC relate*

&a"le( &e&'e* 2 HPT9 &ar*( o! loa* (%*e refere!&e for*ete&t%o! of UV of gat%!g ($..ly ,a( 1VDC ,%le %!

oter( %t ,a( 1VDC T%( refere!&e a*$(te* to 1V %! all

HPT9 &ar*(

0at%!g .o,er ($..ly )oltage ,a( lo, Corre&te* t%( tore$%re* le)el Self te(t a!* 0ate te(t .a((e* Ca!!el

ta'e! %!to (er)%&e

Page 2 of 66


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MISC 2 HMP0 a!* NLC+ IMO9 go%!g OFF SEM &ar*( to "e toro$gly &lea!e* "y "lo,%!g o)er SEM

,%t "lo,erCe&' SEM lo&' "ar %( %!(talle* &orre&tly a!* f%r#ly SEM

#o*$le %( a!&ore* .ro.erly Dr%)e ta'e! %!to (er)%&e

0ATIN0 SUPPL

UNDERVOLTA0EFAULT

2: UV &atter%!g of relay %! PS@ .o,er ($..ly NTRF &ar* %! PS@ &a!ge* Pro"le# (ol)e*

Car* (e!t for re.a%r to +HEL-EDN

MISC 2


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MISC 1 U!"ala!&e #otor C$rre!t( $.to 1


35/66


4. Ce&' MMI (y(te# &o!!e&t%o!( a( .er (&e#e

If all &o!!e&t%o!(5ar*,are are O9 P%!' ,%!*o, ?

Dr%)e Stat$( (o$l* a..ear o! MMI (&ree! el(e +l$e,%!*o, ? L%!' Fa%l$re a..ear( o! MMI (&ree!

MISC 6 Co# Port of o!e La.to. ($..l%e* for VFD %( !ot,or'%!g

1 &o#.$ter of VFD-MMI !ot ,or'%!g

Re.a%re* "y +HEL-(%te tro$g la.to. )e!*or

Moter "oar* re.la&e* "y &o#.$ter )e!*or at (%te

LOAD

COMMUTATION

FAILURE B LOAD

PLL FAULT

@ Ca!!el tr%..%!g o! Loa* Co##$tat%o! Fa%l$re

Ca!!el tr%..%!g %!ter#%tte!tly o! fa$lt( 3Loa* PLL

Fa$lt Loa* Co##$tat%o! Fa%l$re Motor ;%!*%!g

Sorte* B Po,er S$..ly PSFF fa%l$re4

SEM eart%!g fo$!* !ot .ro.er Sa#e re&t%f%e*

!o( HPT9 #o*$le( a!* 1 !o PSFF &a!ge*

MISC MOV( of ::>V 1A2A B A fo$!* "$r!t *$r%!g

%!(.e&t%o! a!* #a%!te!a!&e ,or' Fo$!* %!&orre&t&o!!e&t%o!(

F$(e( fee*%!g MOV( ? No fa%l$re o"(er)e* Fo$!* MOV(

"$r!t Fo$!* ,ro!g &o!!e&t%o! %! .a!elA*)%(e* to &a!ge all MOV( 1A to 1C 2A to 2C A to C

MOV( &a!ge* Pro"le# (ol)e*

LOAD

COMMUTATION

FAILURE

Sla)e Ca!!el tr%..%!g o! Loa* Co##$tat%o! fa%l$re Ca!!el "a&'-&arge* ,%t So$r&e "rea'er o.e! a!* Loa*

"rea'er &lo(e* FA+ F+C FCA %! NLI+ loa* fo$!* ,%t

large DC off(et

Ca!ge* NLI+ &ar* a!* a*$(te* DC off(et( to le(( ta!>#V a!* "ala!&e* AC )oltage( of FA+ F+C FCA Ca!!el

ta'e! %!to (er)%&e O9 Pro"le# (ol)e*

MISC 1> +ot Ma(ter a!* Sla)e &a!!el of o!e ID Fa!tr%..e* o$t I! Ma(ter &a!!el So$r&e a!* Loa*

"rea'er tr%..e* I! Sla)e &a!!el o!ly Loa* "rea'ertr%..e*

Fla(o)er %! So$r&e (%*e of Ma(ter &a!!el Ma(ter&a!!el %(olate* a!* Sla)e &a!!el ta'e! %!to (er)%&e

Fo$!* (o$r&e (%*e AC a!* DC f%lter f$(e( "lo,! a!* al(o&a"le ta..%!g fro# "$("ar to f%lter f$(e( "$r!t MOV( o!

So$r&e (%*e O9 F$(e( a!* ,%re( re.la&e* All &leara!&e(

are #ore ta! a*e$ate Ca$(e of fla(o)er !ot '!o,!

Ca!!el ta'e! %!to (er)%&e O9

Page < of 66


36/66


37/66



MISC 1 I!&o#%!g MCC+ to IOMA PSFF tr%..%!g *$e to

%!r$( &$rre!t(

+rea'er (ett%!g a*$(te* a&&or*%!g to (%te &o!*%t%o!(

Pro"le# Sol)e*

MISC 2 Ca!!el *%* !ot (tart (#ootly Fo$!* loa* CT .olar%ty re)er(e* after e/a#%!at%o! of Loa*&$rre!t ,a)efor# ,rt loa* f%r%!g .$l(e( Corre&te*

.olar%ty Pro"le# (ol)e*

MISC H$!t%!g o"(er)e* %! &$rre!t B (.ee* Para#eter SR0AIN t$!e*Pro"le# (ol)e*

MISC : D$r%!g e/&%ter te(t o! &a!!el re(%(tor( R@> R@1

re.la&e* fro#


38/66


#%! ,e! ta'%!g te f%r(t ID Fa! %!to (er)%&e Pro"le# (ol)e*

MISC 1> ID Fa! VFD g%)e! a .rote&t%o! tr%. fro# So$r&e+rea'er OFF &o!*%t%o! "$t al(o (o$r&e "rea'er %(

g%)e! tr%. o! VFD OFF &o!*%t%o! t$( &reat%!g a

log%&al .ro"le#

So$r&e "rea'er tr%. *$e to VFD OFF &o!*%t%o! ,%ll "ere#o)e* a!* %!(tea* ,%ll "e g%)e! a tr%. &o##a!* o! %t(

GEle&tr%&al .rote&t%o! a&te* %!.$t "e%!g tr$e T%( %(

%#.le#e!te* at I B C Pro"le# (ol)e*

LOAD

COMMUTATION

FAILURE

11 Ca!!el tr%..%!g o! Loa* Co##$tat%o! fa%l$re LMAR0 ,a( &a!ge* fro# 2=

Fo$!* P2 ,a( 21


39/66


"r%*ge a* got (orte* Re.la&e* tyr%(tor #o*$le B (e!t

te fa$lty #o*$le for re.a%r to +HEL-EDNPro"le# (ol)e*

I5O PRO+LEM 1 +ot &a!!el( &o##%((%o!e* "$t !ot a"le to ta'e

"ot %!to (er)%&e (%#$lta!eo$(ly "e&a$(e of a

#%((%!g fee*"a&' *$e to HROA &ar*C$rre!t $!t%!g after tat

HROA &ar* re.la&e* S%#$lta!eo$( o.erat%o! .o((%"le

Pro"le# (ol)e*

HROA &ar* (e!t for re.a%r to +HEL-EDN

MISC 1 C$rre!t (ar%!g .ro"le# "et,ee! &a!!el( A&t$al &$rre!t( ,ere "ala!&e* Meter o! LCI &a!!el !ot(o,%!g &orre&tly Meter a*$(te* O9 ,%t .ot IM o!

NLI+

FAILURE TO START 2> VFD fa%le* to (tart a!* Rotor fa%le* to (tart 7+%t 1

of ALARM ;ORD8 *%(.laye* o! .r%!ter

Pro"le# %! DC f%el* a!* e/&%ter o! (y!&ro!o$( #otor

Motor &a!ge* %! .re(e!&e of +HEL-+o.al .er(o! a!* %t

%( r$!!%!g O9

MISC 21 La.to. "attery "a&' $. !ot ,or'%!g C$(to#er a( a('e* to (e!* 2 "attery "a&' $.(

EDN (ay( tat La.to. PC &a! "e fe* fro# UPS ($..ly

a)a%la"le %! VFD .a!el A( ($& "attery "a&' $. %( !otre$%re* %! la.to. PC for VFD #a%!te!a!&e

MISC 22 U!%t tr%..e* o! re&e%)e* AUTO OFF &o##a!*(;SPOSE rele)a!t alar# *%(.lay ,a( 3A$/%l%ary

S$..ly fa%l$re4

C$(to#er re$%re( tat 2:V DC a!* 22>V DC

($..ly fa%l$re "e (e.arate*

S%te K Log%& "$%lt %! VFD ($& tat a t%#e-*elaye* t%#er >-V DC ($..ly fa%l( Co!ta&t( of t%( t%#er $(e* for

So$r&e *r%)e "rea'er Start Per# a!* %t( %!)erte* (tat$(

$(e* for ge!erat%!g AUTO OFF &o##a!*( to (o$r&e"rea'er &ar*( (%#$lta!eo$(ly

EDN *oe( !ot re&o##e!* (e.arate log%&( for 2:V B 22>V

DC #o!%tor%!g a( "ot 2:V DC a!* 22>V DC fa%l$re((o$l* tr%. te *r%)e

MISC 2 H%g )%"rat%o! !ot%&e* %! fa!( at (.ee* a"o)e6r.# 7S.ee* at $!%t FL&o!*%t%o! %( 6>>r.#8

Re(o!a!&e %( "e%!g o"(er)e* fro# fo$!*at%o! at(.ee*Q6r.# Ho,e)er )%"rat%o! %( %! goo* o!e

+HEL-Ra!%.et re&o##e!*( tat (tat$( of (.r%!g

&o#.re((%o! &a! "e &e&'e* *$r%!g a!!$al #a%!te!a!&e

Page of 66


40/66


($t *o,!

MISC 2: VFD tr%.( ,e! (#all (y(te# er'( o&&$rre!&e T%#e *elay of 2 (e&( alrea*y %!&or.orate* to t%*e o)erte .ro"le# C$(to#er a( "ee! a('e* to loo' %!to te

(o$r&e of te (,%!g5er' a!* ta'e a..ro.r%ate a&t%o!


MISC

1 ;e! %!*%)%*$ally r$! "ot &a!!el( r$! O9 ;e!

"ot &a!!el( .$t o! .arallel for e$al (ar%!g of&$rre!t %t &o$l* !ot ,or' C$rre!t %! C-2 "e&a#e>

C-1 Tr%..e* *$e to MP #o*$le .o,er ($..ly fa%l$re

C-2 tr%..e* *$e to Sta&' fa%l$re

O!ly o!&e &a!!el( &o$l* r$! %! .arallel o.erat%o!"$t lo&al (to. P+ *%* !ot re(.o!* tr%..%!g &o$l* "e

*o!e "y o.erat%!g lo&al5re#ote (ele&tor (,%t&

Pro"le# (ee#( to "e *$e to 2:>V ($..ly fe* to ele&tro!%&(

or #alf$!&t%o!%!g of &%r&$%t "rea'er %! PSFF #o*$le EDNa( a('e* (%te to &arry o$r te follo,%!g B g%)e fee*"a&'K

a. P$t "ot &a!!el( %! 0ate Te(t #o*e at te (a#e t%#e

"y &a!g%!g MTRFMIN to >2 a!* FLUS to >1 B

.$tt%!g NLC+ (,%t& $. DO NOT SAVE It #ay ta'e

a"o$t < #%!$te( for .$l(e( to "e relea(e*

b. Ce&' %!.$t ($..ly at (eet 1++ of (&e#e Ca!ge ta.

of trf to get 11>V o! (e& of T1

Ce&' 2 V DC fro# gat%!g .o,er ($..ly O9 So$l* "eatlea(t @ of 66


41/66


MISC 2 Follo,%!g .ro"le#( *$r%!g .arallel r$!!%!g of 2

&a!!el(K

a. I!*%)%*$al loa* "rea'er( *o !ot tr%. ,%t re#otetr%. &o##a!*5lo&al (to. P+ O!ly R$! relay

*ro.( B MP *oe( !ot %(($e a tr%. &o##a!* )%a

RUN relayHo,e)er .ro&e(( tr%. &o##a!*( tr%. loa* (%*e

"rea'er( at a t%#e for "ot &a!!el( a(

e/.e&te*

" D$r%!g loa*%!g fa! (.ee* r%(e( $.to ,e! RUN1

B RUN2 relay( %! &o!trol .a!el *ro. Ce&' o.erat%o!

of loa* "rea'er( %!*e.e!*e!tly "y re#o)%!g .l$g-%!ty.e RUN relay %! IOMA a!* (%#$late Loa* +rea'er

o.erat%o! So$r&e "rea'er( #$(t "e OFF ,e! *o%!g

t%( te(t

M%(ta'e %! ,%r%!g &art of C-2 T%( ,a( te &a$(e of

C-2 !ot (,%t&%!g OFF ,e! STOP &o##a!* g%)e!

fro# CBI Pro"le# (ol)e*.

b. O"(er)e INVLIM *$r%!g !or#al r$!!%!g a!* ,e!$!t%!g a..e!( "y &o!t%!$o$( *%(.lay of INVLIM

Te )al$e of INVLIM *%(.laye* ,%ll tell te ty.e of

fa$lt Plea(e *o te follo,%!gK

1. I!&rea(e LMAR0 to > fro# .re(e!t >16 R$!*r%)e a!* (ee %f $!t%!g .er(%(t( H$!t%!g

.er(%(te*

2. If %t .er(%(t( Ca!ge LMAR0 "a&' to >16 Ca!ge

re(%(tor R6>R6 R@6 %! NLI+ to 1>>9 fro# 1>9R$! B (ee %f $!t%!g .er(%(t( Ca!ge* re(%(tor(

H$!t%!g .er(%(te*

3. If %t .er(%(t( &a!ge a"o)e re(%(tor( fro# 1>>9 to


42/66


(e$e!&e Pro"le# (ol)e*

MISC Motor &$rre!t &al%"rat%o! o! VFD CBEE .a!el R$! "ot &a!!el( at #%! (.ee* Ce&' LMODEJ %! "ot

&a!!el( Mea($re trf (e& ,%!*%!g &$rre!t ,%t &l%.-o!

#eter S%!&e trf &$rre!t J #otor &$rre!t a*$(t

NLI+5DLI+ .ot IM (o tat .a!el #eter rea*( &orre&tlyNote tat at #%!%#$# (.ee* &$rre!t ,%ll "e #%!%#$# B

(tea*y

MISC : R$!!%!g VFD ,e! ID Fa! a!*le( a%r %!(tea* of fl$e

ga( S.ee* *oe( !ot go to Ma/%#$#

S%!&e *e!(%ty of a%r %( #$& %ger ta! fl$e ga( %t ,%ll !ot

"e .o((%"le to r$! te *r%)e to r.# a( &$rre!t ,%llrea& te l%#%t )al$e( "efore t%( (.ee*

LOADCOMMUTATION

FAILURE


43/66


I5O PRO+LEM @ Motor *e&o$.le* (#oot % ! "ot &a!!el( ; %le

(tart%!g te fa! o! C-1 a##eter rea*%!g *oe( !otgo "eyo!* :>>A ,erea( %! r$!!%!g %t goe( $.to

6>>A a!* &o#e( "a&' for a!y (.ee* %!&rea(e

&o##a!*

;e! fa! (tarte* tro$g &1 fa! *%* !ot (tartrotor o(&%llat%!g a!* (tator &$rre!t $!t%!g C-1

(to..e* a!* &-2 (tarte* C-1 .arallele* Fo$!*

O9 C-1 O9 e)e! &-2 (to..e* C-1 (tarte*

%!*e.e!*e!tly "efore rotor &a#e to re(t C-1 *oe(!ot (tart fro# re(t .o(%t%o!

11 !o( Mo*$le( fo$!* *efe&t%)e Re.la&e*

C-1-Polar%ty of CT %!(%*e e/&%tat%o! "oar* ,a( &a!ge* a(IF+ ,a)efor# !ot fo$!* O9 D$r%!g .o,er-$. "efore

re(tart%!g MAM %! .%&'e*-$. &o!*%t%o! to$g HROA-R2

LED !ot glo,%!g Loa* "rea'er &lo(e* ,%to$t a!y

&o##a!* Self te(t fa%le* %! 2>D HRDD NLC+($(.e&te* *efe&t%)e Re.la&e* B .o,er O! MAM .%&'%!g

$. HROA %! 1+ fa%le* S.ar' o"(er)e* %! 9 relay "o*y

FU-6 "lo,! %! HROA I! MAM ($..re((or "lo&' 7R-C

!et8 &a!ge* a( l$gg%!g ,a( !ot O9 IOMA &a!ge* HROA&o!!e&tor fo$!* "$r!t HRDD fo$!* *efe&t%)e

All re.la&e* Self te(t .a((e* Fa! (tarte*

:-2>#A for re#ote %!*%&at%o! ,a( !ot tere NLC+

&a!ge* OSP a!* SPM (ett%!g ,a( *o!e Fa! r$! a!*.arallele*

C-1 fa$lt a!* !ot (tart%!g All LED( o! HRDD glo,%!g

HRDD re.la&e* Re#ote (.ee* %!*%&at%o! a!* lo&al (.ee*

%!*%&at%o! "e&a#e ero NLC+ &a!ge* a!* ID fa! (tarte*

Pro"le# re.eate* aga%!

Pro"le# #ay"e %! e/&%ter #o*$le or NSFF &ar* Ce&',a)efor# *$r%!g f%el* e/&%ter te(t at TP IF+9 %! NSFE

Co#.are* ,%t ealty &a!!el Al(o &e&'e* e/&%ter

.$l(e( SI01 to SI06 at NSFE

O!e of te tyr%(tor .$l(e( ,a( #%((%!g P$l(e trf o!NHVL e/&%ter "oar* fa%le*

;e! #otor (tarte* tro$g VFD C-2 *%* !ot (tart a!*

tr%..e* o! So$r&e B loa* O)erC$rre!t B gro$!* fa$lt(

D$r%!g #egger%!g o! #otor %!($lat%o! IR )al$e fo$!* )erylo, Pro"le# relate* to Motor %!($lat%o! +HEL-+o.al

Page : of 66


44/66


&o!ta&te* Motor e!* &o)er( o.e!e* B 1 &o!*$&tor ,a(

o"(er)e* to a)e t$r!e* "la&' T%( ,a( *$e to %!($lat%o!fa%l$re ,%& re($lte* %! %g eart fa$lt Motor

re.la&e* Sa#e .ro"le#( o"(er)e* Al(o (.$r%o$(

tr%..%!g(5(tart%!g( o"(er)e* %! C-1

IOMA #o*$le( re.la&e* %! C-1 B 2 PSFF re.la&e* %! C-2Fa! R$! O9

MISC

LOADCOMMUTATIONFAILURE B

SOURCE

COMMUTATION

FAILURE

C-2 (elf te(t !ot .a((%!g DC Off(et !ot gett%!ga*$(te* to ero )olt(

D$r%!g tr%al r$! C-1 3Co##$tat%o! fa%l$re fa$lt

a..eare*

A**%t%o!al eart%!g .ro)%*e* NLI+ &ar* re.la&e* Off(et)oltage #a*e ero %! NLI+ So$r&e B NLI+ Loa* FA+ F+C

FCA "y a*$(t%!g +AL1 +AL2 .ot( %! NLC+ Self te(t

.a((e* O9

NTDA &ar* o! tyr%(tor #o*$le( re(ol*ere* ,ere)er %t,a( ($(.e&te* *ry (ol*er .re(e!t Fa!( r$! O9

I5O PRO+LEM Fa%l$re of IOMA #o*$le( See#( to "e a &a!&e of )oltage #%/-$. %! P1>< a!* IOMA

o$t.$t &o!ta&tor &%r&$%t M%/-$. &o$l* "e fro# %!(%*e te

.a!el or fro# o$t(%*e IOMA

Fo$!* tat tere ,a( !o )oltage #%/-$. %! .a!el (%*e

IOMA #o*$le( ($(.e&te*Se!t to +HEL-EDN for re.a%r Fo$!* .ro"le# of o.e! PC+

tra&'( o! IOMA #o*$le "a&'.la!e a!* al(o tra&'%!g

"et,ee! PC+ tra&'( +a&'.la!e PC+( o! I5O #o*$le

&a!ge* Ve!*er *e-l%(te* $al%ty .ro"le# Pro"le#(ol)e*

FAILURE TO START 1> C-1 of ID fa!-(tart%!g a!* r$!!%!gO9

C-2 7(la)e8 of ID fa!- Doe( !ot (tart +$t r$!( O9

after .arallel%!g ,%t C-1

T$!e-$. .ara#eter( are (a#e %! C-1 B C-2

Fo$!* %! C-2 tat te loa* (%*e CT .olar%ty %( re)er(e*after o"(er)%!g te ,a)efor#( of loa* (%*e f%r%!g .$l(e(

,rt Loa* (%*e CT( Corre&te* CT .olar%ty

Pro"le# (ol)e*

Page :: of 66


45/66


LOAD PLL FAULT 11 O! (tart%!g Loa* "rea'er tr%.( Loa* PLL Fa$lt or

Loa* O)er&$rre!t or Sorte* Motor ;%!*%!g#e((age a..ear( SUPP Le* !ot glo,%!g

Fo$!* tat NSFC loa* &ar* ,a( loo(e a!* !ot .ro.erly

%!(erte* %! ra&'I!(erte* &ar* %! ra&' a!* .$t SEM lo&' "ar Dr%)e (tarte*

a!* fo$!* O9

0ROUND FAULT 12 C-2 tr%..%!g o! gro$!* fa$lt %!ter#%tte!tly a!*

tereafter a( (oo! a( &a!!el ,a( .arallele* to C-1

A&t%o! ta'e!K

Ce&'e* t%gt!e(( of all .o,er &o!!e&t%o!( %!&l$*%!g eart"$( Fo$!* O9

Ce&'e* SEM eart%!g Fo$!* O9Ce&'e* gate .$l(e( a!* a!y loo(e &o!!e&t%o!( et& Fo$!*

O9 +a&'&arge* C-2 a!* &e&'e* loa* fl$/e( o! NLI+

loa* Fo$!* O9

Cro,"ar ,a( &o!*$&te* ,%t all *oor( a!* "a&'&o)er(o.e! ,%t CRSTARTJ>

Fo$!* (.ar'%!g o! o!e of te loa* (%*e &a.a&%tor( %! Fa! B

f%lter .a!el It ,a( (ee! tat te *%(&arge re(%(tor

&o!!e&te* a&ro(( &a.a&%tor ter#%!al( ,a( )ery &lo(e to&a.a&%tor "o*y lea*%!g to te (.ar'%!g a!* e!&e gro$!*

fa$lt

Corre&te* .o(%t%o! of re(%(tor a!* %t( lea*( for a*e$ate

&leara!&e fro# &a.a&%tor "o*yPro"le# (ol)e*

Page :< of 66


46/66


CategorySl!o

Pro"le# Sol$t%o!

MISC 1 Door #o$!te* .r%!ter !ot

.r%!t%!g #e((age(

Fo$!* o!e ,%re ,ra. ,%re &arry%!g .r%!ter (%g!al ,a( &$t o!

SEM Re-,ra..e* ,%re Pro"le# (ol)e*

FAILURE TO START 2 Dr%)e !ot .%&'%!g $. (.ee* R$!( at a (.ee* "elo,

#%!%#$# (.ee* &o!t%!$o$(ly

O!e loa* (%*e tyr%(tor #o*$le !ot f%r%!g .ro.erly

Pro"le# tra&e* to loo(e &o!!e&t%o! o! ,%re l$g &arry%!gf%r%!g .$l(e( Re-&r%#.e* ,%re Pro"le# (ol)e*

FIELD

OVERCURRENT

Dr%)e tr%.( o! F%el* O)er&$rre!t or F%el* lo((

*$r%!g (tart

:1


47/66


CategorySl!o

Pro"le# Sol$t%o!

MISC 1 Ca!!el tr%..e* Fo$!* tat DMP+ IMO9 ,a( !ot

GON LVSH fro# PSFF .o,er ($..ly ,a( g%)%!g G%g

Al(o HMP0 ,a( !ot &o##$!%&at%!g .ro.erly ,%tLa.to. PC

See DMP+ IMO9P1


48/66


3. Error !o 1 %( al(o a..ear%!g %! e*%tor #o*e

4. I! OBM .a!el ,%le (,%t&%!g o! GPON a!* GTL"ot LED( glo, ,erea( %! CBEE .a!el GR

a!* GPON LED( glo, a!* ,e! ,%re %( loo.e* "y

(ort%!g T to R a!* T- to R- te! GTL LED

glo,(

te MMIe/e f%le Te follo,%!g (o$l* a..e!K

a. A #e((age ,%ll "e .r%!te* o$tK MPCC5Ree*-relay

&ar* !ot %! .la&e

b. Te MMI ,%!*o, ,%ll !ot a..earIf te #e((age *o( !ot a..ear a!* MMI ,%!*o,

a..ear(-&o!ta&t +HEL-EDN If te a"o)e %( O9 .$t "a&' te 2 &ar*( a!* re-

e/e&$te te MMIe/e f%le a!* te! .erfor# te

I!tegrate* te(t ;%le &o!*$&t%!g te te(t (tart

,%t &o!*$&t%!g %t o!ly o! a (%!gle CBEE .a!el %e(,%t& off all te oter l%!e-*r%)er( %! te OBM .a!el

a!* te oter CBEE .a!el( S,%t& o! o!ly te l%!e-

*r%)er %! o!e CBEE .a!el a!* te l%!e *r%)er

&orre(.o!*%!g to t%( &a!!el %! te OBM .a!el It %()ery %#.orta!t tat te oter l%!e-*r%)er( "e

(,%t&e* off (%!&e te o.e! &o!!e&t%o! at te D-

&o!!e&tor( &a! g%)e r%(e to l%!' fa%l$re

3. After te a"o)e te(t( a)e .a((e* &e&' ,etert%( error #e((age (t%ll a..ear(

4. Do t%( te(t f%r(t o! te OBM .a!el L%!e-*r%)erK

;%le (,%t&%!g o! t%( l%!e *r%)er (,%t& off B

re#o)e te &o!!e&t%o! "et,ee! te CBEE .a!el l%!e*r%)er B te OBM .a!el %e *o t%( &e&' ,%t t%(

l%!e *r%)er totally %(olate* Re#o)e te (ort%!g

"et,ee! T B RT- B R- %f .re(e!t Te TL Le*

(o$l* !ot glo, Te! (ort T B RT- B R- No, teTL Le* (o$l* glo,

Perfor# te (a#e te(t o! CBEE .a!el l%!e *r%)er a!*&e&' tat te (a#e %( O9 Of .ro"le# .er(%(t( (,a.

te l%!e *r%)er( a!* &e&' If te a"o)e %( !ot

a..e!%!g te %!*%)%*$al L%!e Dr%)er "$ffer #ay a)e

Page : of 66


49/66


got (.o%lt a!* te (a#e !ee*( to "e re.la&e*

RS22 %!terfa&e a*a.tor fo$!* *efe&t%)e Re.la&e*Pro"le# (ol)e*

MISC : C$rre!t $!t%!g .ro"le# *$r%!g loa*%!g of *r%)e

#otor a&&o#.a!%e* "y )oltage &olla.(e

Pa(e (e$e!&e at #otor e/&%ter ter#%!al "o/ &a!ge*

Pro"le# (ol)e*

MISC > O#(

a&ro(( te re(.e&t%)e IOMA T+( after *%(&o!!e&t%!ge/ter!al &a"le( EDN to re)ert "a&' after re&e%)%!g te

rea*%!g o! te *oor #o*$le #eter( a!* te #A &$rre!t

tro$g te 2>> O#( re(%(ta!&e

Pro"le# tra&e* to %ger loa*%!g %! CBI Pro"le# at CBI(orte* o$t O9

LOADCOMMUTATION

FAILURE

6 C-2 tr%..e* o! 3Loa* Co##$tat%o! Fa%l$re4 NSFC Loa* &ar* fo$!* *efe&t%)e Re.la&e* Pro"le#(ol)e*

0ATIN0 SUPPL DIP @ 1. C-2 tr%..%!g o! 30at%!g S$..ly *%.4

2. After 12 o$r( r$!!%!g %rreg$lar f%r%!g a!* !o

LED %!*%&at%o! o! leg STM re.orte* "y

&$(to#er Ma&%!e *%* !ot (tart after (to..%!g

3. D$r%!g (tart%!g &$rre!t go%!g to A te!&o#%!g to ero a!* te! go%!g to >A#.( te!

(ta"%l%e( aro$!* 1>>-1 A#.(

1. HPT9 &ar* of STM fo$!* *efe&t%)e Car* re.la&e*O9

2. O!e HPT9 &ar* of STM B o!e NSFC &ar* fo$!*

*efe&t%)e Re.la&e* a!* Ma&%!e (tarte*

+RID0E

DIFFERENTIALPRESSURE

Ca!!el Tr%..%!g o! +r%*ge D%ffere!t%al Pre(($re Lo,ere* te *%ffere!t%al .re(($re (ett%!g %! A%r Flo,

#o!%tor Pro"le# (ol)e*

Page : of 66


50/66


SOURCE

COMMUTATIONFAILURE

Ca!!el tr%..e* o! 3So$r&e Co##$tat%o! fa%l$re

,e! r$!!%!g o! !o-loa*

O!e !o SCR %! STM2 all tree SCR( %! LTM1 a!* 2 SCR(

%! LTM (o,%!g ero re(%(ta!&e Pro"le# &a$(e %( teloo(e &o!!e&t%o! of T2 &o!trol trf %! LCI .a!el

Co!!e&t%o! t%gte!e* Pro"le# (ol)e*

MISC 1> C$rre!t $!t%!g .ro"le# %! &a!!el( O!e !o tyr%(tor leg fo$!* *efe&t%)e Re.la&e* a!*

.ro"le# (ol)e*

LOAD

COMMUTATIONFAILURE

11 Ca!!el tr%..e* o! 3Loa* Co##$tat%o! Fa%l$re4 Follo,%!g te(t( ,ere &arr%e* o$tK

1. Re(%(ta!&e a&ro(( all te tyr%(tor( &e&'e* Fo$!*(at%(fa&tory

2. F$(e( %! all HPT9 &ar*( &e&'e* Fo$!* O9

3. Self te(t fa%le* %! 2>1 *$r%!g te(t%!g of HRDA71A8

HISA71+8 B I5O #o*$le

Re.la&e* HRIA 7I5O 2A8 HROA 7I5O 2+8 HISA 71+8

F$(e B 1>


51/66


LOAD

COMMUTATIONFAILURE

SOURCE

OVERCURRENT B

FIELD LOSS

1: 1. 3Loa* &o##$tat%o! fa%l$re4 lea*%!g to tr%..%!g

of te fa!

2. 3So$r&e O)er&$rre!t4 fa$lt

lea*%!g to tr%..%!g of te fa! 3F%el* lo((4 fa$lt o! (tart-$. a!* $!a"le to (tart

te fa!

E/&%tat%o! &%r&$%t toro$gly &e&'e* $. Fo$!*

ter#%!at%o!( %! GC .a(e a!* te &$rre!t fee*"a&' CT(,ere loo(e Ter#%!at%o!( t%gte!e* a!* GEVC Po,er te(t

&o!*$&te*

Pro"le# (ol)e*

MISC 1M; .la!t !ot a"le to ge!erate #ore ta!

:>M; ,e! o!ly &a!!el( of ID Fa! are

a)a%la"le

Da#.er .o(%t%o! %!&rea(e* to


52/66


FIELD LOSS 1 Tr%..%!g of ID Fa! o! f%el* lo((

Self te(t fa%le*

E/&%tat%o! (y(te# toro$gly &e&'e* Fo$!* tat %! &-2

te e/&%ter o$t.$t &$rre!t ,a( le(( *$e to !o!-&o!*$&t%o!of o!e tyr%(tor NHVL &ar* &a!ge* Ca!!el &leare* for

(er)%&e after EVC .o,er te(t a!* &al%"rat%o!

O!e of te e!er *%o*e %! IOMA Moter +oar* a*

fa%le* Re.la&e* a!* (elf te(t ,a( .a((e*

MISC 2> V%"rat%o! of #otor &$rre!t o! ID Fa! 7(o#et%#e( %!

te or*er of >A8 O$t.$t )oltage ,a)efor# ,a(fo$!* *%(torte*

O$t.$t fee*"a&' CT( ,ere fo$!* loo(e at te #o$!t%!g

Sa#e t%gte!e* NHVL &ar* re.la&e*Motor &$rre!t )%"rat%o!( (t%ll .re(e!t

A*$(t#e!t of (.ee* reg$lator ga%! *%* !ot re*$&e te

)ar%at%o!( SFE of &-1 to "e re.la&e* ,e! ($t*o,!

a)a%la"leC-2 &o!f%g$re* a( Ma(ter a!* &-1 a( Sla)e a!* Fa! .$t

%!to (er)%&e Var%at%o!( !ot o"(er)e*

Defe&t%)e &ar* "ro$gt to +HEL-EDN for re.a%r

MISC 21 U!"ala!&e of A %! te #otor &$rre!t "et,ee! te

t,o &a!!el( of VFD

C-1 &$rre!t %!*%&at%o! at te re#ote7UC+8 ,a( (o,%!g

le(( ,ere a( %! te lo&al te &$rre!t ,a( (o,%!g

"ala!&e* "e&a$(e of .ro"le# ,%t te V5I &o!)erter %!NLC+ &ar* Sa#e re.la&e*

Pro"le# (ol)e* C$rre!t for "ot &a!!el( ,ere "ala!&e*

at te re#ote Defe&t%)e &ar* "ro$gt to +HEL-EDN for

re.a%r

0ROUND FAULT 22 ;e! ID Fa! (tarte* after &lea!%!g for a!!$al

#a%!te!a!&e C-1 B &-2 tr%..%!g o! 0ro$!* fa$lt ata #otor )oltage of a"o$t >>VAC 7>>r.#8 T%(

,a( o"(er)e* o! tr%al( %! (%!gle &a!!el o.erat%o! or

%! *$al &a!!el #o*e

D$r%!g &lea!%!g of te .a!el( &$(to#er a( "ro'e!

&o!!e&t%o! at te l$g .o%!t( of te HV &a"le( &o!!e&t%!g tote loa* (%*e f%lter &'t( Ca"le( re&r%#.e* Pro"le# (ol)e*

Page


53/66


LOAD

COMMUTATIONFAILURE

2 Ca!!el tr%..e* o! Loa* Co##$tat%o! Fa%l$re 1. Ce&' SEM eart%!g a( .er SEM Eart%!g *o&$#e!t

2. Ca!ge 7rea&ta!&e8 &o#.e!(at%o! re(%(tor( %!

NLI+71D8 %e &a!ge R6> R6 R@6 fro# 1>9 to

1>>9 O#( B &e&' te fl$/ re&o!(tr$&te*,a)efor#( o! NLI+71D8 Ca!ge re(%(tor( to lo,er

)al$e( 7$.to 9 O#(8 t%ll te re&o!(tr$&te*,a)efor#( are (%!$(o%*al

3. Ca!ge LIMAR0All te a"o)e *o!e "$t .ro"le# !ot (ol)e*

I!ter#%tte!t tr%..%!g of &a!!el "et,ee! .er%o* of : r(to :r( o"(er)e*

1. Te loa* (%*e tyr%(tor( (!$""er &'t CT &'t gat%!g

&'t( toro$gly &e&'e* All ter#%!at%o!( o! HPT9

a!* NTDA &ar*( &e&'e* for loo(e &o!!e&t%o!( a!*(ol*ere*5t%gte!e*5re.la&e* ,ere)er re$%re*

2. Self te(t B gate te(t &o!*$&te* S.ee* fee*"a&'

&'t fo$!* #alf$!&t%o!%!g %! NLC+ 5DLC+ DLC+

&a!ge* S.ee* f*"' &'t &al%"rate*

3. 0at%!g .o,er ($..ly &a!ge* fro# V to 1V

4. Cro,"ar te(t ( &o!*$&te* C$rre!t fee*"a&'( O5C

.rote&t%o! &'t &e&'e* a!* a*$(te* ,ere)er

re$%re*

5. Ca!!el .$t %!to (er)%&e Voltage a!* &e&'e*

,a)efor#( &e&'e* a!* fo$!* !or#al

Ca!!el tr%..e* aga%! o! 3Loa* Co##$tat%o! Fa%l$re41. F%r%!g .$l(e( a!* te a((o&%ate* &'t( of HPT9 TFUa!* te relate* r%""o! &a"le( &e&'e*

2. I! 2 of te HPT9 &ar*( o! te loa* (%*e te

refere!&e for *ete&t%o! of G$!*er)oltage of gat%!g

($..ly ,a( 1V DC ,%le %! oter( %t ,a( 1V DCRefere!&e a*$(te* to 1V DC %! all HPT9 &ar*(

Page


54/66


Self te(t a!* gat%!g te(t( &o!*$&te* a!* all

.ara#eter( fo$!* !or#alPro"le# (ol)e*

MISC 2: C-2 tr%..e* SEM Po,er ($..ly PSFF fo$!* OFF PSFF re.la&e*

Pro"le# (ol)e*

MISC 2A +erg $#.er 2 o! DMP+ *efe&t%)e Re.la&e* O9

0ATIN0 SUPPL DIP

B LOAD

COMMUTATION

FAILURE

2 C-2 tr%..e* o! 3gat%!g ($..ly *%. loa* &o##$tat%o!

fa%l$re gat%!g .o,er ($..ly lo((4

HPT9 &ar* of LTM: "$r!t HPT9 &ar* re.la&e*

HLC+ &ar* fo$!* fa%le* Re.la&e*

Pro"le# (ol)e*

SOURCE PLL FAULT 2 C-2 tr%..e* o! GSo$r&e PLL Fa$lt Loo(e atte!$at%o! &ar* &o!!e&t%o! %! STM1

LOAD

COMMUTATIONFAILURE

> C-2 tr%..e* o! GLoa* Co##$tat%o! fa%l$re Dry (ol*er .ro"le# %! NTDA &ar* Car* re.la&e*

2 !o( HPT9 &ar* &a!ge* HMP0 fo$!* fa%le* HMP0re.la&e* Pro"le# (ol)e*

Page


55/66


0ATIN0 SUPPL

UNDERVOLTA0E

1 C-1 alar# G0at%!g ($..ly $!*er)oltage NTRF &ar* &a!ge* B &a!!el (tarte* a!* &a!!el tr%..e*

o! GF%el* lo(( .ro"le#F%el* e/&%ter "oar* NHVL &a!ge* Pro"le# (ol)e*

Ca!!el ta'e! %!to (er)%&e

0ATIN0 SUPPL DIP 2 C-2 tr%..e* o! G0at%!g ($..ly *%. NTRF &ar* fa%l$re o! @>V .o,er ($..ly NTRF &a!ge*

Pro"le# (ol)e*

LOAD

COMMUTATIONFAILURE

C-2 tr%..e* o! 3Loa* Co##$tat%o! Fa%l$re4 2:V DC %! PSFF fo$!* *%..e* HROA71+8 a)%!g Motor

a"o)e #%!%#$# (.ee* &a!ge* Pro"le# (ol)e*

MISC : So$r&e +rea'er tr%.( "$t !o Alar# or Fa$lt la#. or

a!y #e((age o! .r%!ter Ca!!el ta'e! %!to (er)%&e

after ta'%!g o$t te ,%re( o! IOMA El#e/ T+&o!!e&t%!g to S;0R relay a$/ &o!ta&t

A*)%(e* to &a!ge HROA relay &ar* %! IOMA #o*$le

,%& e!erg%(e( S;0R relay T%( #o*$le ,%ll a)e

S;0R relay o! %t

MISC IC o! te HMP0&ar*( fo$!* of Harr%( #a'e

HMP0 &ar*( re.la&e* a!* Pro"le# (ol)e*

Page


56/66


CategorySl!o

Pro"le# Sol$t%o!

MISC 1 C-1 a* .ro"le# of !ot (tart%!g 0ate .$l(e( for So$r&e a!* Loa* ,ere &e&'e* a!* fo$!*

O9

SEM &ar*( ,ere re#o)e* &lea!e* a!* %!(erte* %! %t(.o(%t%o!

2 l$g &o!!e&t%o!( ,ere fo$!* to "e loo(e a!* ,ere

&orre&te*

C$(to#er re$e(te* +HEL-EDN to ($..ly (.are l$g( a!*(!$""er #o$!t%!g (&re,( for f%/%!g

Tr%al r$! of C-1 ,a( ta'e! fro# Lo&al &o!trol a!*

(tart%!g of fa! ,a( (#oot T%( ,a( &e&'e* aga%! for

re.eata"%l%ty a!* fo$!* O9

MISC 2 C-2 !ot ta'%!g loa* ,e! .arallele* ,%t C-1 Ce&'e* 12P11P a!* 12P11N &o!e&t%o!( o! (eet 2+F Fo$!*

O9

Ca!ge* NLC+ %! C-2Parallele* O9 a!* too' loa*

Clea!e* or%g%!al NLC+ a!* re.la&e* Loa* ta'e!

Pro"le# ,a( *$e to *$(t o! NLC+5DLC+

Page


57/66


ENERAL CEC8S:

1. Ce&' tyr%(tor gate .$l(e( %! 0ate te(t #o*e2. Ce&' tyr%(tor a!* (!$""er ealt%!e((3. Ce&' ealt%!e(( of loa* (o$r&e a!* DC &%r&$%t &a.a&%tor( MOV(4. Ce&' .a((%!g of Self te(t 5. Co!*$&t &ro,"ar te(t a!* get O9 re($lt( D$r%!g &ro,"ar te )olt#eter o! CBEE .a!el (o$l* (o, ero )olt( a!* #$(t "e

(tea*y at tat )al$e Al(o So$r&e .a(e &$rre!t( #$(t "e &lea! ,%to$t a!y (.%'e(

6. Co!*$&t Megger te(t o! &o#.lete .o,er &%r&$%t( fro# tra!(for#er $.to #otor7. Re#o)e #otor %!(.e&t%o! &o)er Ce&' ealt%!e(( of ,%!*%!g( ,rt eart "et,ee! ,%!*%!g(8. Ce&' CT 5PT fee*"a&' &%r&$%t(9. E!($re .ro.er eart%!g of SEM Ra&' "y re#o)%!g .a%!t at )ar%o$( .o%!t(1> All &o!!e&t%o!( %!&l$*%!g "$("ar( &o!!e&tor( ,%re( &r%#.e* ter#%!al( are to "e &e&'e* for t%gt!e((

E!($re SEM Lo&' "ar %( f%r#ly %! .la&e11 All ele&tro!%& &ar*( tyr%(tor .o,er #o*$le( a%r f%lter( are to "e "lo,! ,%t &lea! a%r to re#o)e *$(t

Page


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CEC8S FOR ROUND FAULT LOAD COMMUTATION FAILURE LOAD PLL FAULT :

1. Ce&' SEM eart%!g O92. +a&' &arge C-1 fro# C-2 "y tr%..%!g C-1 (o$r&e "rea'er a!* lo&'%!g %t o$t Te! &lo(e o$t.$t &o!ta&tor "y (ort%!g IOMA

T+ after re#o)%!g RUN relay fro# IOMA .l$g-%! "a(e Ce&' te ,a)efor# of atte!$ate* )oltage( at NSFC Loa* a!* Fl$/,a)efor#( at NLI+-loa* Ce&' te ,a)efor# at NTL o! NLC+ 0ro$!* fa$lt o&&$r( %f NTL Q >


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EARTHING FOR SEM RACK

S S S N

S

CARD N Aluminium

SLOTS Extu!i"n

Aluminium

N Extu!i"n #

CARDS GND

SLOTS N

SEM FRONT $

%IE& Cu. '(id

Rem")e "nl* "ne Nut+'"lt (t ( time. C,ec- Sing+/l(te 0(!,e e!ent

1.Rem")e (int "n 2"t, !ide! "f Nut+'"lt! m(-ed N4.

5.Rem")e (int "n Nut !ide "f S4 (nd l(c6ue "n /C' 2"(d t(c-7if l(c6ueed8 "n He(d !ide "f S4.

Te!t 0it, mulimete if in d"u2t. Gene(ll* t,i! m"t,e 2"(d 0ill n"t 2e l(c6ueed.

3.GND i! tinned c"e g"und 2u! in C 9 Exe /(nel 7Regul(ti"n (nel in ,ig, cuent ectifie8 .

M(-e c"nnecti"n $4 (t !ite7if n"t (le(d* e!ent8 0it, 5:;!6. mm. Aluminium " c"e c(2le 0it, lug! "n

2"t, !ide!. C,ec- if #4 c(2le c"e+/%C (le(d* exi!t!. If n"t m(-e c"nnecti"n #4. C(2le #4 i! 1< !6.mm.C"e 2(id+/%C c(2le= c"nnecti"n m(* (le(d* d"ne (t 'HEL+EDN in /(nel.

C C

C C C C

B

B

B

A A A

F"nt '(c- F"nt '(c-

CCC

Page


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SEM SIDE SEM SIDE SEM 'ACK

%IE& %IE& CO%ER

>.Sc(e (int "n 2"t, !ide! "n l(te "f nut+2"lt A4 (nd '4. Execi!e c(uti"n (! t,e m"t,e2"(d

in! m(* get 2ent (ccident(ll* 0,en d"ing t,i!.

: Sc(e (int "n 2(c- c")e "n ,e(d !ide "f !ce0!4C4.


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1.In!t(ll SEM 2(c- c")e c(efull*.

Details of Fault and Ala! "essa#es in t$e %C& Di'e

FALT MESSAGES( )

1. LOSS OF COOLING FAN ;

*lease efe ladde lo#ic s$eet no 1F+

%,-&C /,T 0/B%F

5. SORCE LO& LINE


%,-&C SF%T

3. FIELD LOSS

*lease efe ladde lo#ic s$eet no 1F+ %,-&C F%D%,SSF%T

>. SORCE 'ACK/ O%ERCRRENT FALT


%,-&C SCS**&/*T *,T 9C B&T 2

:.LOAD 'ACK/ O%ERCRRENT FALT


%,-&C %DS**

&/*T *,T 9C B&T 5


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LOGIC = OS

&/*T *,T 9C B&T 7

11.GROND FALT


%,-&C -/DF&/*T *,T 81 B&T

15. FAN COM/ARTMENT DOOR O/EN


%,-&C /,T0BF/D

13 .'RIDGE DIFF /RESSRE

*lease efe ladde lo#ic s$eet no 1F+ %,-&C BFD&FS

1>. FIELD CRRENT IM'ALANCE ; FLT&D 'IT

Field cuent i!balance c$ec is fo AC ecite onl:.&f a field cuent i!balance is detected b: t$e /SF; cad and t$en t$e fault is declaed. A


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Duin# no!al unnin# of t$e di'e@ if t$e diffeence bet?een t$e souce and load cuent 0ead in s:nc$onous ?it$ load

feuenc: c:cle eceeds t$e li!it set b: =%+%&"D> fo t$e no of ti!es setb: =STT&"> t$en a fault is declaed. A

t$en a fault is

declaed. A t$en a fault is declaed.

5


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5


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%,-&C /*"@ STT*"

B.GATING S//L$ DI/

*lease efe ladde lo#ic s$eet no 1F;

%,-&C -SA%"

1.FIELD ECITER %OLTAGE LOSS; ALA 'IT 1H

Duin# stat ?$en t$e field is ene#ied and t$e field 'olta#e is built and = := 5H

T$e di'e e!ote efeence ?ill $a'e 'alue bet?een 4 to 2 !A. &f t$e efeence falls belo? a 'alue of 4 !A t$en t$is

ala! is acti'ated.

[email protected] OF S/EED CONTROL

Duin# t$e di'e o


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