1. Incoming p a n e l tor conria~:t-ing t h e 1.1 k V s w i t c t \ b o a r d f.o L11c poc~or t r a n s f o r rnr3r .

. . ( 3 . .BUS couulrsr p a n e l f o r c p n n a c t - i n 9 L'JCI l I I . ; V bus ~ e c t l o r l s i n grid s t a t i o n s where t i 1 ~ 9 por,Jcilr

I I: t r a n s f o r m e r s a r e i n s t a l l o c i arid f ~ r g r i d s t a t i o n auw i l i a r y s u p p l y .

4 . J .rlt lust~' lal r~nr.e!. fol* g i t ~ i n c j 11 k V s~~pp . l . ,+ t o i n d i v i d u a l cansitms!rs. ' ,

5. - ~ i . i y ~ a i n pane*] for' g i v i n g 11 b\' :;upply t-o i n d i v i d u a l corrsrJmar s fed front two d i f fe rcn t f esdar s .

6 . Consumer p o n s l s f o r n i v i n g sonncc:ioni: 1 K V s u p p l y t o a n ind i . \ / idc~a l consumer f r o m Lhr? g r i d s t a t i o n s

I i .hrol.~sh a n express oSr declicn?.cc.J 1 1 t.;V i ceder . 4 -2.2 Swi tchtoal-ds s h a l l t a asssmbl.ed w i t h i n c l i v i ~ : J ~ ~ o l pane 1s

and may be o f t h e f o l l o w i n g conf i a u r a t i o n s . The g s n c r a l l a y o t r t s i l a l l b e o s sl~ocrn i n d r a w i n g N o . FDIJ,/TE.-582,

I

i , The swi tchbo.?rtJ may compr i s e o f csne i ncon~i 119 p a r ~ e l and a numbnr oC o u t g o i ng/consrrn.cr pane I s . 71.13 iqcoming panel. s h a l l bs a t c)r~e er!d r3f t . 11~ ! % b ~ i t c h

bonrcl . i i . 'The swi t c l ~ b o a r d may consist u f LISJO i nc:ornj ng

I p a n e l s , o n e bus c o u p l e r na l r s l a n d numlj~r. o f I . . cu tgo ing /consumer p s n e l s . The i nzoming end t.he b u s

couplei- panels s h a l l bo a d j s c e n t t o each u t h e ~ - bti th the bus c:oupler i n t h e c e n t r e . The ou tgu ing /consumer p a r t e l s s h a 11 be or1 1 3 i t l ~ e i s i d e of t he i ncowi ng p a n e l s .

4 . 2 . 3 The i n d u s t r i a l , consumer' and r i n g main pan l s l s s h . s l l * b e proviclecl w i t h s e a l a b l o end l o c k e b l ~ n t e t e r i n g cornpar t - rnent as d e t a i l e d i n clause 8.1 .;', ? . I .2 a r d 10.5. . .

4 :3 ~ n t e r zhangkebi 1 i t v -----..-----.---.--,..-.

4 . 3 . 1 A l l r emovab le cemponents o f t h e salne t . m e a ~ c l r a t i n g i n a g i v e n a s s e m b l y s h a l l be physic .a l l ~ and ol ectu i c a l ly

. i n t e r c h a n g e a b l e . I

4 . 3 . 2 A 1 1 rerno\!a6le ccmc,ortentc. { i n c l i i ( l i n ~ c i r c ; ~ j ? . breaks:- t r o l l e y ) ~1it.11 Jifftere!ltr. t :~pes oqd r a t i n y s rjha! i n o t h a i 1 1 t e i . c I ~ a n g e a 5 I e .

main overcurrertll a n d c a r t - h f a u l t r c l r y . P o r , h c h.>cl: up '\. l ~ ~ o t ~ c t i ~ n t-11s I:i i f > coi 1s sha l 1 be ertergir;or_l dj.l-.?ctlr . , from the C T a i d i t.l~out r e c t c ~ i r i n s ar1y c,:ler ncl :sordrce.

4 . 5 . 2 . D i f f e i ' en t l a 1 Pro t ec t i on i . \ --.--.-.--.*-.-.--..--.-.--.------- ! , I I: 4 1 5 . 2 . 1 ~ 1 1 incoming pane l s s h a l l be provided t h roe add!.tional

C T s ''or d i f f e r e n t i a l protoct ior r .

4.5.2.2 lie i l i f f o r e n t i a l i~rotec:Lion zone of, powo; t rahaformors is ro sc~ i r ed t o ':.rip tllf? 11 kV inr:orning b r e a k e r s . For . t h i s pur-pose t h s incorning pane l s of: 1 2 . 5 K A r a t i n g s h a l l b~+provicIed , wi t-h an addil- ional DC operatacl t r i p c o i l .

. . 4 . 5 . 3 DC Gr-ipply. and T r i p I n d i c a t i o n s

---. -------.-..-.---.--- --a*-.------

, 1 4 . 5 . 3 . 1 Supoyvision r'elay s h a l l be provi3ed Tar c:ontinuously -.

I monitoring the heal ti)./ condition:; ~f br.c!akcr t.1-ip c i r c u i t a n d pr9senca o f DC supply on a l l a p p l i c a b l e pane l s . The presence o f h e a l t h y t r i p c i r c u i t shall b o I. in t l ics ted by llse cont inuous glow Q f a r o l l o w i.amp. The i nd i ca t i ng Lar~tv\s s l ~ a l ] . be o f nac.11 t y p e i-tiC.h screwed

, t !

base. Tho rat. i ny sl-ta 1.1 be 5 watt . n t I 5 O V or 26OV DC clependiny on t ont1.01 onr! a u x i 1 j iiry st.tpply vol t a g s .

4 - 5 -3.2 Ortg hooter a11. I i t s acknoolec-lge snd can*.;ell iny a r r a n g e - I

mc)rlt; s h a l l I,.! ins t -a l led in t h e incoming p a n e l !:.o i n - I I 1 .

dicaLti f a i l*.tr of OC mains s t ~ p ~ l y , .DC s u ~ p 1 . y to. any panel, and f;.i Illre of h e a l t l ~ y t,l.ir* cii-cirit., i t r~d I-iWYpping o f any breitl:*:.r . T h i s arrangc?merit sl~oulcl bo s e l f con- t a ined ant! .:l?curely f i x c z d , t o the pane l . The alarm

/ ~ a n c e l l i r l r ~ e r rangem5nt s h a l l b.2 f l trsh &ounte:d on t ho f r o n t of, t I t , . pane l .

4.5.3.3 For c i r c u i t b r e a k e r * f i t t s d t r i t h hC ~ e r i e s t r i ~ ) rnochen- , .ism, a u x i l i a r y c o n t a c t s s h a l l be provided i n t h e p ro t cc t i vc r e l a y f o r opetat-ion o f a hooter, i n s t a l l e d i n tl?e i n r r rning penel , t o l d l c a ' r ~ b r ~ a k e r L I - i p . The con tac t s l ~ r t 1 1 be s l ~ i t a b l e fo r o?ai at-i o n o f L t ~ e hooter specif ier1 i n clat.rss 4 . 5 . 3 . 2 and 1-ntcd a s per c lnuao 15 .2 .2 .

4 .!j . 4 I-leter i n g -- .- .. - .- - --- ' . . . 4 . 5 . 4 . 1 Arr angerne;tt.s f u r meter i r-19 sh.311 t ~ s r:~rovidad a s shown i n

drabriqg PI. . . PDW/TC---sf30 ?. 581.. The vc:)itnge c o i l s o f a l l enorgy r n s t 9 r s of f i l ~e ovl.q~oing p a w l s s h a l l tte ,connectad to t h e vr.1 l t. ass t r a n s f o r tnsr of the corl-os.ponding bus

I s e c t i o n . i

ck.5 . 4 .2 For s w i t . , I . I - , ~ a r r j ~ 14itLJ-1 IIUI.; cou!>ler , k h e v o l kage t r a n s - I for-mei. of ~ a c l l ~ I J S s~st.t.ic>n !;h.311 be opera ted cindcpen--

Tire s r ~ r i l c t ~ g c a i - , a1 1 spr73r-al-us a13c.l c o r i ~ i c c t i o n s s h a l l . b e s o s i ~ p p o i t s c l arltl r>roc~or. t ioned a.s I:o I3e c a p a b l e o f s a f e l y wil:lisLandi I ~ O s t - r e o s o s L o which Lhey may be t l ~ b j e c t e d cllll. i ng se i .v ico i n c l u d i na t h o s e clue t o sl-mr+- c i l - c u i l o f 'i2.5 K A or- 25 Ks as r e q u i r e d and under t h e c 1 i t n a t . i ~ c o r i d i t l o n s specified h e r e i n .

Eaclr porrcl s l ~ o l 1 \.PC (I t - : ; i : r r ~ r ? ( l 1.0 r:ai-vy nircl \.I i th:;tal-td tliel-mo I nrrd niochnn ical st. l . ? s s c s c a u s e d by t h e f o l loi*ri ni l 1-ated . c u r l - e n t s :

i . Ratcc! norlnal c u r r e n t ( f o r main-c:ivc:uits)

1 2 . 5 K A 2 5 KA pane l p a n e l .----- .------

. i i . I?ated s h o r t - t i m e t 1 S e c ) r~itiisL.arid c.u:'venl ( f o r 1 2 . 5 K A 2 5 K h rnairl and sa i - \ .h iny

I cJ r c t ~ i ts )

i i i . Rat o d !)ea k 1.1 i t-hs t e nt:l c u r r e n t . ( f a r main aric 32 K A 53 K A car. t . l ~ i r ~ g c i 1 . c u i t s j I

4 . 5 P r o t e s t j o ~ and M e t e r i n g ----.-.--- -...-.--. -.-- ---.----

4 . 5 . 1 fYverc.l.lr r e n l : PT clLsct i o n I 5 . 1 1 41 1 PAIIE!~!; s h a l l IIevs ovcr.c~tr-r e n t : arid e e r t l ~ f a u l t

i <? p r o t a c t j o n a s pe r clause 1 5 . 2 whidi s h a l l be p r o v i d e d 1 by means; o f inver-se induct ic ln t y p e / r ~ u m e r i c type r e l a y s

w i t h tuo over c : ~ ~ r r a n l : ~ * l e n ~ e l : t s a ty i one e a r t h f a c ~ l t . clement, . 'The I - c l a y st iol 1 I-la\:e Lli.1-ep i n s t a n t a n o o u s

! e l e m e n t s .

4,s .1 .2 F o r ' 12 .5 K A swi tchgear . t.1.1~ r o l a y s s h a l l b e ar iangocl t o o p e r a t e o n AC and w i t h o u t arty q x t e r i ~ i t l s o u r c e of s u p p i y us ing s a t u r a b l t ! ' a l .~x i l i a r -y c.:li-rent. t - r ans fo r rne r s . For 25 KA s w t i c l ~ g e n r , t l ~ c ovel'ci.~l-i.l-:!lit' r ~ 1 . 3 ~ s s l ~ a l l o p e r a t e on DC .

' . . 4.5.1.3 for 25 K A inc1)nring p a n e l s , Ir! ndc l i t ion to t h e DC pro-

t-oct.ion scliern.?. a back up CIC s e r i e s p i . o t e c t i o n scllernb shall a l s o be p r o v i d e d . Tl ic k~.ack up AC s c r ios p r o t s c - t.ion shn 1. 1 be opei.at.eiS';l?y ;:I scpai -a t -s ' cai. t h F a u l t ~.ela: , ' . The chart ic\-er: :;tics o f eai.';tj f e u k t r o l a y f o r back ui> p r o t e c t ion she:. 1 12s snns <I. ; for. eai.t.11 fau l t . u n i t i n the

- - 11 .5 . # I . L? I n C,CI~I:. of i ~rc.lurjCi i a l , S . . , < ~ I I : ~ L I I ~ I C I . ~ I V I C I I i I-IV I I I L ~ ~ r t r .>c tv le l s , i rldr!r)tr~iclc: 11t. :I!: , 1 I. nus t r-,a 11.; f ~ ~ . t i ~ ~ ? l ' . : z j l . ~ i l L 1 b o ~ 1 - o v ided Fo I. ..... met-or illy c t f e~~c- . r .yy. , 1.loi.c.11\.,1:1. , ? t - * . ~ ~ ~ o l - c i - i r i g trquipmont i n ... ") 1. h:r.sa.. p.n nc 1 s :;lla 1 l 1 . t ~ I I . i I I- a , 1 1 3 ~ ka13 1 e

. . a a1.1c.I s f . : ~ j . ~ L . ~ l c (:?r(~par.~;lnt:.~\~ , .:rq:. ::.r:r 11 l . n 1 j . = 0 9 . I - 2 , 9. 1 . ~ 3 a n d

1 Q . 1 .l. - .

. . i . . R a t e d 1 i , i l l rLr l i~~y i r n ! ? l . ~ l r;c- vli::.Irstnlicl v o l t a g e . '35 k'v' , . i i ' . RFILCCI F I O I ~ J ~ ~ ~ . ~ I . ( ? ~ . I I J ~ I ~ . : ' t~i1:.I\::::.tai7cI ~..1r51t~cj0

31:. k\/ ! I ( r - n\ , ::. )

Tii;3 I I ; ~ I I ~ I ~ ~ I I ~ I t : l . ~ c ~ . ~ ~ ; . ~ v i ~ c i 1 . 1 J ~ I . !:lr.;\l I. I:OC ;IS 1.1rlder.i ' d l .4 . 2

4 .:\ , T l i ~ i ~ i s t r l o t.ion. ~ l ~ e e t s , . co\ /e i -s a n d s l o u \ / q s s h a l l be rnzc!e x:f niclt.ei.j.cl1 I-la'..:j.ng gooc{ C i i . 4 resistant 131-opsi-ties.

. . . .P\atc l ia1.s l,.isi:~J.e Lr.8 ~:atc:li f i i . c . . s ) i a l l n o t be ust.cl :I:

c o n s t r u c t i q n o f . t h e p a n e l s . I11 t h i s regard, p a . \ - t i c u l a r care sht1.11 be t a k e n i n s e l e c t i n g . t h e appr-opr i n t e : i \ l y i ~ l n t j . n r : ~ r r ~ o t ~ ~ ~ ~ - i a l s .ft31- 1;13i-'i-i.zi.s, I : : c v c ~ - ~ and s l s e v c s (?LC:. ~c1i.i.c.h :;l:lall e s s c r ~ l : i d l l , . l i a i r c l i on . -hyy rosco f ; i c , . n r I . I , i n - Y a . i r a n d novr-- i rrf l n~nlnab le p ~ o p - e l - L i e s Sum: l i a s r . s i n f o r c c c l f'ibcr g l a s s , <?paxy, l e e s i n s B ~ . C . sp!!cia i l y made to c- : i~ i t ?I)% inteq~:leci a p p l i c a t i o n s I c I I n i t , 91 .>1:1.r ~ . C J 1 D ~ I C J I ;I ;CI-~I\AI. I.OCJCI i ~ . ~ ~ r . ~ ~ ~ i i l ~ ~ . I n nl:, Ca.Tc , r:r :Jirl;,tA,. r".:~: , n ~ l . I invi n.2 I.:P.:~\J~I-~~:'.I i ~ ~ s ~ l l a l : i n y a'nt.1 [ylnr!c~ al.1.11 ii. j l . n t : l ~ . s l l a11 bc: n.:.c:.I an ; : \ - l l~c~s i n 1.111 i..al.~:l . S C > I I I ~ ~ I ? ~ C ! e:leteils i . rgel .d ing r r~r . r : . I i~~~j l ; ~ ! . , ~ . 1 p < ( l 1 . 2nt:l I.11el.nl.31 cl13l.fi*::tsr i s t ics c1.f '

I:.l-lr> 8 i r ~ ? . ~ ~ . l . . ~ l . ~ . n ~ III.:~I:~!I*~;II. ~ ~ I ~ ~ . ~ \ - ~ . > : ~ ~ . I 1-0 I:.;! I.!:?$(:I at: \.:JI-~I:)US l.,:*c:;~l..jc~a<; i 1 i \.l>p r>,j~~i::l ::,II<I\] bt: ~ ~ . ~ f : y ? l i : ~ < l f't:!r al-,pi*-:ts*.:~l -

- 4.9.3 Handles and l e v e r s r ~ i t l r an e s s e n t i a l 1;. s t r n i ght I l . n e

mclvemsr~t s h a l l move upc~ards or t o Lhe righl. ( i n c i ~ s a of h a n d l e s moving v e r t i c a l l y o r hor i z o n t s l l r I - e spec t j . ve ly ) f o r a c: losing operat . ion and s h a l l move i n t he o ~ ~ o s i t e dj r e c t l o n f o r a n opevnlng o p e r a t i o n . t-iantlles moving t i o r l z o n t e l l r end away from1 or tobrnr.ds the o13ers t . o~ \' 1- s h a l l be moved away from t h e ogernLar. fol- a c l o s i n g or ,brat ion and towards t he ope ra tor: f 01- a n oper~ i r\g o ~ e r a t i o n . .

4 .9 .4 . F o r p~t:jIl CJI' pu l 1 I)c) t to r l s which ar e I oc;a t ec l orle i3hovs t h o o t 6 ? s r , the uppel. I>utt.on s h a l l I>cl \.he Obi I>oLI-on and t.ho lowor butLon s h 3 l l b o t he OFF' Ixlt (.on. For ~x-rsh b u t t o n s p l a c e d :side by si .cle , the r iglrl: hand b u t t o n s h a l l be t h e 01.1 b u t t o n and t h e l e f L h i > ~ d bvLLon s h a l l be t h e OFF b u t t o n . The 0t.l b u t t o n s l ~ a l 1 be coloul-cd r e d ancl t h e OFF but Lon s h a l l bc? colo1.11.ed ueri .

4 . 1 0 ' Circuit: Connections -.--.- - -----....-..- - - --.- .. ..-.-

' 4 . l b . l I ncorn i ng Fa na 1 .... -..-------..-.---..

Each' Jncoming pene l s h a l l have p l .ov is ion C I F incorning ' c i r c u j . t e i t h e r by rnsqns o f undergrourd cal3les or- by a n . overhf?ad bus d u c t a s s p e c i f i e d i n t I I C l i i c l documents . . .

Cjpaco shall be prov i.ded f (21- t h e f 0 1 l c ~ i - ~ i ng c a b l e s o l ~ n e c - - Lions wiLh d r y tc*rrninaLior~.

i . Isline t .16~. s i n g l e c~ , l - e 500 ::q .ninl cr .oss 1 i nked . a o l y e t h y l e n e ((XLF) aluminitlrn <:c?121e for- 25 Kk incoming panels.

i i . E.ix 140s. s i n g l e c o r e 2 4 0 sc?.mrn 8::ross lir~lcecl p o l y e t h y l e n r ( XlP) aluminic~m c:able foi- 12 .El l<A incoming p a n e l s .

The bus d u c t s h a l l be a s shob~n i n d r - ~ ~ . ) i r ~ p 140. I>DLJ/Df=- 300.

. 4 .10.2 O t h e r s - - - - -. -. . .

E B C I ~ o u t g o i n g , c:onsurner., b u s C C I ~ I P I P ~ , i n c l u s t r i a l and r i n g main pane l s l r a l l I-lave s u f f i c i e r ~ t rooni f o r p r o v i - sion o f dry termir ,a t iorr f o r t h e fcli !.olaring c a b l e s : - 1

i . One 3-co1-e 1 2 0 s q . m m cr-osc; 1 i nl,el:l p o l y s t l ~ y l e n e ( X L P ) all-~rni n i u m ceble f o r airl.gt>i rig, consl.lrper a n d

bus ,coirpl e r p a n e l s .

i i . ~ - - c c I I - ~ 35 sq .!nn~ c : ~ o s s 1 .i 3 k e c l pc~ l yst11,~lene ( x L P ) slurninium c . 3 b l . t ? f o ~ v i n c j ~na i l ) bncsl i r ~ d u s t r i a l p a n e l s .

The s i d s moucit~d c a b l e bo:t for- t.hu i n d u s , t r i a l p a n e l s h a l l bs stri t a b l e f o r clry I-#:)-mi nnt i'on o f 3-core ,35 sq .mrn to 120 sf1 .m ln XLF a 1 tlrn.in'ium. cab le .

.The tnan~.cfactul-ors s h a l l p l . o \ / i d s t e r m i n a l s w i t h high t e n s i l e steel b o l t s , n11t.s and washers f o r c a b l e connec- t io t i s i n accortlanc;e c1j.t.h clrill.~i ng 140. PDW/DFb444 . Provision s h a l l be macle t.o e n s u r e cocnplbte vermin proof in!? n f Lha! c a b l e t?nt r h o l e s .

:Spec i.o I. Too l s --- .----.- ---.--.

Orie sct o f s13oc.ial t-001s ancl accassor . i es as per clause 4 . l l .2 c.;11,311 Ijc s u p p l i e d t.1it.17 each s \~ i tch l>oa i -c l . i i~l\ le\ ;or, i n cn5:c ~f clel i t ier) , o f s i n g l e p a n e l s , o n e sucl: s e t sl ial 1 be PI-ovi.dc?d f'oi- c ~ ~ s t - y f i v e p a n e l s o f i d e n f ~ i - c a l typcs . rlle b i d d e r s s h a l l i n d i c a t e i n t h e i r offer ?.lie ( j e t a i l s of the s p o c i a l t o o l s a l o n g u i t h quantities. 1.1hich a r e .incluclecl i n t h e i r offer- f o r app rova l of bJAPDfi .

4 . 1 1 . 2 Com~le tc ! s e t o f s p e c i a l t c o l s , a c c e s s o r i e s and opera t - ing d e \ ~ i c c ! s :c~hicli a r e reclu il-cd for i n s t a l 1,at io'n , opera-- tie^.^ ancl n a i r ~ t e n a n c o of a l l . t y p e s o f swi t chgea r panels ol-d&i.cc_l slial. I. I:,? &uppi i e d I>.,. t h e lnanu f a c ~ i ~ r - o r s . A sot of ' spec i a ! . tools s t \ a l l ali.ray.; i n ~ . l u c ! e , h u t n o t be

, i l i m i t e d to. t.ht* Following: - . . i.. A 1.001 k i t r .eq~ir .ecl for- operiing t . h ~ c : i r c u i t break-.

er or. arw o f i t s p a r t s f o r inspection, ancl a l s o . . For i. ts ccl~rrr?let'c mmai nt-enancl? and scarvik.i ng . One

t o o l k i t s h a l 1 bfc s t . ~ p p l j.ed f . 3 ~ eacli t y p e of c ir-- c i ~ i t I,1-e.3ker- ' i ncorporaked i n Che pi\nc?ls..

i i . Ttdo opei.aI;ing a t t a c h m o n t s / h a n J l e s f o r t h e b t i t l 7 -

clrawnl slid i n s e r t i o n z,f t t ~ e c i r c u i t . br.cz,ker t r u l l a y .

i i i . T W O s:pi. i . . ~ g chaygi r19 hsnclles Tor marlual c h a r g i n g of t h e spr- j. -lg .

i v . Orle t e s t p l i ~ g for r e l . 3 ) ' ~ . .

v j . . or locking k e y s , Tj I4o:;.

\I i .i . l J . sc -~ l~n~ c:l>ec::l<.i r15! meter- f o r vacuum Sct. t l e s . i f ,3pl3licsl.llc 1. No . .

v i i i .c?ppr a tion t i r;d ,.;la i ~\I:ccii~nc:e cc. t .al~gi. les and ..;~7.\eniaLic IJ i a!31' arns .

1 .11 ,3 ~ l l e abovo mentioned too 1s and c levices s1.m 1 1 b e I ~ o o s ~ d , i n a s p e c i a l t o o l bclx f o r t he s a f e s tc r -ago . A lisl.

slsowing I:he contents . of tlw t - o ~ , l box s h e 1 1 be a f f i x s c l t o the inner sicle o f \;he bcx c c ~ \ ~ e r .

INCCIMING PANEL . . . .

r1.1 - 1 ~a'c:h incorni nu p a n e l C : l PI- 1 2 . 5 I:/( 01 25 K h tlr eaki ng '

c a ~ r a c i ty s l1a11 ccrmrr- isso t he r n l lat~ri ng e c u i r ~ n \ e n l :

i . One c i l -cu i t t ~ r eitlter

i i . Thrcte cur l -en t I:r-a~~sfol-mer-s for o v e r c u r l - e n t p r o t e c t i o n and met-erinrj, ancl th i -ce c ~ r r i - ~ r l t tr-ansfor.r[~?rs; f o r d i f f e r e n t i a l r ~ r - o t e c t i o n .

i i i . One t h r e e phase v o l t a y e t ransfol-rrer or 3 s i n c r l e I pl3at;e vo 1 tage- t r ;r nsf ormer:? .

v i i . 1ioot:er.s

v j i i .Cable Ternii riat i o;: F1ad

ix. Signa l Ling Camp

C i r c u i t 13iaca ke r s --- ------.------...

5 .2 .1 Each inciotning panel s l i a l l . have a c i * c v i t b r e a k e r (:cJ~I -

forming t o c a l u s s 11 wit11 a n y o f t.I.1, fo l lowing ieal.ings a s may be s p a c i f i c d in t h e t e n d e r : -

kiil:c?d vo 1 t age . . ,:? ItV

5.3.2 T l i e I - a t i o o f c a r - r s n t ti-ansfornlei-:i Lo l>e f i t t e d i n t h e incclrning p a n e l s f o r o v e r c c ~ r r e n t p ro loc l . ion ancl l n o t e r i n g st la1 l be 1600 : 900/5-5 hrnp;.

5.3.3 T h o I-at- lo o f c u r r c ~ t i l t ~ . a r ~ s f o r r n e l - s f o r . c l i C f e r e r ~ t i a l n i -o t .~cl . i o n .;tin l l I>o 11,130 : :309/5 / \ r ~ t p s .

5 . 4 Vol t-aye l ' ransformctrs ----------- ---..- --.--- 5 . 4 . I The v o l t a g s t r -ansformer s .;\is11 be s u p p l i e d i n a c c o r -

dance tglith c l a u s e 17 .

5 . 4 . 2 No f u s e s s l ~ a l 1 be providcc:l on 141' or- L T s i d e . For p r o - t e c t i o n a g a i n s t s h o r t c:irc:uit on secondr-y s i d e , a t r i p p l e p o l e A . C . minicstut-e c i r c i l i t b r e a k e r h a v i n g f o l l o w i n g char-nckc?r i s t i c s slla 11 be i n s t a l l e d i n the

. . m o t e r l n g conipai-krrlent:-

.- .- Rated v o l t a g e 250 V o l t R . C : 1 -- Rated C u r r e n t 5 Amps

--- RaLcd b r e a k i n g C u ~ . r o n t 0 . 2 K A -- .flax ipum opoi-a t j.ng t ime < 500 m / S .

a t r a t e d b roa l< ing c u r r e n t

The MCB s h a l l . lmve a t ] . e a s t tcro NC a u x i l i a r y c o n t a c t s , one conl:.acl s h a l l be usecl f o r s i n y n a l l i n g l i g h t f o r

.- indicating t r i p p i n g o f MCEI and t h e o t l ~ e r c o n t a c t s h a l l be used f o r t r i p p i n g t h o tIV c i r c u i t b r e a k e r . t h e powor source 1'ci.r s i g r i a l l l n g l i g l - ~ t s h a ' l l be 110 v o l t s DC f o r 25 K A piln03ls arid 240 v c ~ l t ~ i C\.C. f o r o t h e r s .

5 . 4 . 3 Tile volt.a!gs t r a n s f o r m e r s l - t a l l b e so i n s t i l l e d a s t o b e e n e r y i s o d p r i o r Lo t h e c l o s j n g of t h e b r e a k e r and s h a l l be capablrs of conven ia r i t i s c l l a t i o n Frorn t h e b u s b a r s .

f - 8

5 .5 I n s t r u m s n t s and M e t e r s 0

I . 8

5 .5.1 Each incoming p a n e l s s h a l l ' b e e q u i p p e d w i t h t h e fo l low: !

i n g i -ns t ruments -and rnetors f i x e d g e n j r a l l y a t t h e I

~ 0 s i t i 0 l . 1 shown i n d rawing N o . P D W / D F ; ~ ~ ~ o r PDW/DF-300:- I

I

i . O n e voll.rneter 0-15 K V w i t h s e l e k t o r s \ . r i tah

i i . Three ammetoi-s"0-1000-2000 A m p s . One i n e a c h p h a s e . .

i i l . One Kt-lkl meter . t.rith 1.101

i v . One t<VARH metel.

v . . O n e poctor f a c t o r rnctr21-

Or:@ ovei-c:urr e n t I - e l a y s t ia l . 1 !.to provicled on eacl l i ncom- ' i n g p a n e l a s per. c!.auss I t ; . The 1 -~~1as s;ljall be F i x e d

g e r ~ e r a l l y a t t he posit. i on slrocrn i1 .1 dr.at.~i ng No. PI?W/DF- 2'33 .

5 . 6 . 2 O n e s u p s r \ ~ i s i o n r e l a y slla'l. l bs pvoviclecl i n accoraclo n c e with c l a u s e 15.3 Fov 25 K f i p a n e l s .

5.6.3 One e a r t .h ' f ault re . lay s h a i l bo provicjerl i n 25KA i ncom- . ing pa.nel a s per c.la:rse 15 o f I~ac l tup Rr:. s e r j.es p l - o t e c - t i a n .

5 .7 liooter .- .. .- - .- .-

I ,

5.7.1 One hoot.er s h a l l ba r)rovi<Jod i n cacti 'iiiconri rig p a n e l ns s p e c i f i h d i n c l s u s r ? 4 . 5 . 3 . 2 ot- 4 .5 -3 . 3 a s arapl icable.

. . 5.8 . cable ~ c r ; n i nst i o n Pacl

.--.------ -----.--.- -- -.------. . . I

~ \ 5:.9.1 ' . Rdequate f a c i 1 i t i e s for- t o rmi nat i i la . ' c:sl~lss s h a l l I>e I ~ ~ r o v , i d s d a s r e q u i r e d i n c!.auso 4 . i o . ! :

; 5.9 .Signalling L a m p s . e m - - - - - - - m e - - - - - - . -

! ! 5.9.1 . For e a c h incoming panel, I:.i~o s i g r i a l J i l t n p s " R E D " and . 1 ' "GREEN" shall be pi.ovided. t o indir:at;t: "0I.I" a n d "OFF"

. ... I . . . . -

i '. .' . p o s i t i o n o f t h e c i r c u i t breaker r e s p e c A v e l y .

'The i n d i c a t i n g lamps s h a l l .be o f n e o n t y p o b ~ i t h sct-ewed base o f E - i o a n d r a t e d 5 Wat ts a t 150 Volts. The l a m p s ' shall be s u p p l i e d from t h e secondary o f ' t h e , v o l t a y e

. t r a n s f o r m e ' r s .

The r e l a t i v e , pc t s i t io r i of t h e recl s i g . q a l lamp sl id11 be to the t - i g h t ' a r i d green lamp s h a l l be t o the left as s l~own i n d r a u i ny N.:) . PDW/DF-293 .

*fellow s i g n a i l j n q l a n ~ p int:licaf;ing I,~r..althy t-1-ip s h a l l be p rov ided a s r e q u i r e d i n c l e v s e 4 . 5 . 3 . . .

B l u e s i g n a l l i n d lamp indi~:a'l-,irrg O F F p o s i t i o n o f MCB- p i - o t e c t i n g v ~ l tag? tr.a.7risf.sr mer st131 l be pi.oilidei: a s

. 4. . required v ide c l a t . 1 3 ~ 5 . 4 "

9

-16- , '

6.1 . I E . D c : ~ al.~! c ,~c~ing 1>.:11;c\ ~ + . i \ : , ' ' ~ a ~ - o f 12 . s 'or. 25 Kt-\ b\ .oa !< iny

.C.aFnCit.>' :;tlall < : . Q ~ I I ~ ~ I . is,: 1:'1,? f .:?.l.l~~.!in=l e q ~ ~ i p l n o n t . h r;:j.l.l~lc+ l i r l c disr.,]i'anl .:~f t.112 (>31ia:.i is g i v e n i n D~.IIJ . No. PCII*I/T IZ - ".r?C, .

i . O I I C Clt .c .~ .~iL Bl.r:.al:c.r . . J I . TIIl '?!? i ~ i ~ l ' l ' C ? l ~ t . ~ : . , i ~ a r ~ ~ f ~ : , t ' ~ ~ ~ ~ l ~ ~ : > f,t>\. 0 ~ ~ ~ 1 ~ t : 1 ~ 1 ~ ~ ~ ~ ~ ~ 7 ~ .

pl .~:~l.~C!.iclr~ arid, fnc*l.qi-i~-~g ar,~-,:l 51:at::e c;..i- ~ I - I I - ~ Q . cclr'i'cnl: l r - a n s f c . * l . ~ ft:>i- >j i. f f&r.l-r?tll: j..d p l - ~ t t ? i t . i ~ ? r ~ 1 . 0 I:Ic: i 1.151 491 I ec l j 11 ~ ~ . I \ . ~ . I V I ? .

i i i . Xrisl:~ I I I ~ I I ? I I ~ . S

i v . EIIPT$I./ ~ 1 ~ 1 . ~ 1 - v . R'*la;'s

/ v i . Tl~rec: E i r ~ g l ~ . p h a s e 1ncL;11 cxide gaplcse s lJ rye a1.1-o5l:sr.s

v i i . Cnl3lc 'Iei.mi nat. j or1 P;cl I v i i i .S.i!:)11.31 I i i y ~ Larnp

6 . 2 C: ..... i .- r . cu ... .. i ....- 1:. ... C I - , ~ ? ... . ...- k e r .... s . .

6 . 2 . I T h e c:ii-cl.li t. L l ~ - r , ' z ~ k ~ \ ' c : . ~ 1 . 1 i t l 1 13'" of , 4 0 0 C \ r n p s l ' a t i n g f o r 1 2 . 5 p a n e l s nr11:1 630 rlnlp:; 1 - a t i ~ i g f r ~ i - 25 \<A p a n e l s a n d s h a l l b e SLII-zplicd a:: ~:&c.l- claus.:.c 11 .

. . - . 6 - 3 c-L!.T.!:-C,!l t- ,.-... T>.3.1:!3 !..9.!:.!!i~.!-,.?;.

t D . 3 :I The curl-er~t: Ti.ansfor.nic:i..;. ? ; h a l l be oclpplieci i ti 'actor- c1i:ince c ~ i t 11 c l n u s p 16 ;

4.3.2 '1 110 1.o 1: i (1 .cl= c;l.lr.r orlt 1.1' aa~fr.rl.rlier 5 y,l.o 11 \JQ 409: 200i.5-5 A r r l l ~ s for I3ok'h 12 .5 \:A ant:{ 25 Ki', p a n e l s .

C. :alJY g!? .-A,[.,!. c?j..';Cy*? . . . . . .. . - - C s u r g e srreat.r!i 'n. I-~iry i nu T A L S ~ t.101 ! ~ I G C * 1 2 KV ~ ~ r l c l nolni rial d i s c i ~ ~ i - : ~ ~ ? c\?i-i.?nt:. o f 111 ,900 r'rrnps r.1 i 11 be suuppl icd a.5 I-el- L!al':cl.3 91:>z.r: . 1 : :Ir, i f sl7p.c j. f i i n t h e t e ndor. :

(:;>c~:~t:.l~l_,: . I

,L,!!:2,&,~: !J!~I~J!!::E.~ ,.,,. !.lyl..~--':c 5, -a.rr;l,, !'?g 1 !:I)::; I

Tl\e 10;liJ ktr tali s~.ri tcl-Icy;. c.:clrrlrrorlli rl.9 c ln l j se .l2 s h a l l ' . I>!: C,~.I~?I.> J. i.+d . T I W ~ :=l.lt~ i I. . i II;:.+I pl>;.,.t t .~. I I R C . ~ O L . J ~ I - f11se:z h:~\tj.ll!J I I C I ~ I I I . : : ~ 'I aI-ir121 ::C!g 1':. TI>.= i r lLerr~lf>. t i l -~g s-:~il~i:~!:~il. i I:)., d::r. r115.3 : ; l j ~ l ] , ~ !:I=- 12.5. I.;;:, ( ~ 1 - 25 \:(:I as bt3 $;I-.C. ... ,- - i f i .vt l f ,:,I t . ! ~ pa 1 . 1 ~ I:-+ L ) Y * : \ F ~ Y PC! .

. . . . T h e 1 0 3 ~ 1 I~l.e.3 k s v ~ i l;cl\. :;l1;1 1 1 I\qvc 3 r>c>s i i o n s a s i nd i - - coLefJ j. I I r; j .ngl .~* I. i I I P - clj.acj~.an No .. I'-pLl,.'TC-.580 , I t s h a l l .

b e capab le of he iny I~!.OFC!C~ f o r connec t ion t o e i ths l - . . ' bus s e c L i ~ r i a n d the middlo r,ositj .on s l ~ a l l bo t he "OFF" ; 1.30s i I:. i : ~ n .

, 0 s ari ,111 t - p ~ 11\1l:j.\.;~ I:.:) [Il.:! I : ~ . i l . ; l ~ ~.).:tlc 3 ~ ~ ~ i t i ~ n ~ s ~ i t i : l i , . I:.IJO 3 ~>I \ . JS< : s ~ j . l:r:lr,?.~;. ' V:,I- $ 1 1 . i d s t a t i o r ) sup1.>1'~ b r i t h i n t . ~ r . l o i l < i r . ~ y , a r ~ o n j e r ~ l l ? ~ l t s may be pro \~ ic led- a s rhow,'n i n clbrg t.10. T?I?LI/TE--500. The in ta l - l .ocks sl.r;lll. be su.ch t-llat . . who11 one: 'scri kc!\ i s ~ _ l o ~ i ~ c I , l t ~Oi1.11 k t pGs3ib10 to ,:. 1 IJSe v- ::, I* I I:.? 1' . . .

Tl.19 s ~ . : I ~ . ~ . I ; \ I ~ ~ : ; ~ . I I I ~ ~ o I - ~ I ~ c I ( ~ 1 1 ~ ~ 1 - to k . ~ ~ i ~ ~ > p L i c : d ) z i l~al l b e ,,, . . .ft-!t:l ~ I . ~ : ) I I I l , . l \ *> ] < : 1 ~ 1 i l ~>I-{:.A!- :.\J~.V.I:~ a:.. l~l-: l~~ak~:!l : j C~1l , ,S i r1~l t3 , :

1 i 1 . l ~ ~ 4.i L I G I I 3111 .

TWIJ s i g11~q 1 ' 1'2i111135.: ' 'KKL8' a111.l ' ' C i X ~ ~ 1 . I '' 511~1 11 1 . ) ~ p'f.<:)i)iJ~:d La '

.irlt:lit:at.? "01.1" 31.1(.-1 "err: " r,t>s it. i o n of tlrc c i I ' I - I J ~ t brsa kai. r . g s p ~ ? ~ l - i \ . ? ~ J . ; i . .1'111.: l i \n~l. . :~ ::l.lall I,<. J:. ~ Q I . ~ l a c t s ~ c 5.9.

0 .IbIPIJ1;T!' I pjl- P13t4l?l- - 'sr

n.1 Gs:.g!< r-?~!.

. l3:l.l Edr;!i' j r~C(i~:;l:.r. i a 1 [:..:I rlc-1 . :~l-~.s I. 1 bt- o f ; \ ~ r ) ' Airlps. 1 . d ' L i r l ~ a 1.1d .: :;l.1;11 1 I ~ : I V ( > 1-1112 .fl-: 1 L I > \ ~ I ~ , , - I . J .::q1.1 ipln~: I I L . ::i r l s l . 1 inr: ~jiagr;lrll i:; :; .I~cIL.II~ i n i l ~ g ll.:~. F ' @ L l , " I ~ . 5 Z l .

i . !> (I,:. .C i 1. c I! i I.. 61. ea k.: I .

i i .. 5.i .< L1.11 ~ . c I ~ I \ . T r ~ ~ t ~ f ~ ~ : ~ l i z : r 5 I

i i i . cine 3-.pIiasc or '(:hl.et> 5 i 1 .T: 13010 t y p ~ V O ~ t-as?. I r ans Termel-s

i:i. I r i 5 t ~ ~ ~ f l . c h k ~ \ . I . E 1 1 c r . g ~ llello~ 3

v i . QI~;:! 1 .:a v i i . C;llslr! Te rn~ ina t i o n Pad i .

-19- 1 r

r ' :

A s e p a r a t e meteri ny comp;-3r tnlent a s pe r c lausa 13.6 s h a l l ba providccl i n w h i r . t > a l l t h e metering equipment;., , t h e voltage tr-ansfoi.rnc.,rs, metering 1 2 T ' s , energy meters and al.1 seconda l .~ w i r i n g s l ~ a l l bn housed: The protec-. Live c:urreht tl-ansfdl-mers , ovcrcur-rent relay and t h o ' indlci l t ing i nslrctments shall be mountecl s e ~ a r e t - e l y .

The c i r c u i t breaker s h a l l be of 4 0 0 Amps r a t i n g and s h a l l be supplied a s per clause 11. The breaking,capac- i t y shall bs 12.5 K A .

Tbro se ts o f .sur.rent t.ransformars coriformins t o c l a l ~ s o 16 s h a l l be provided. One s e t s h a l l be. f o r P I -o t ec t i on .

. and the o t h e r f o r metering. . I

Tho c u r r e n t . transformel-s f o r p r o t e c t i o n s h a l l be o f ' . . ratio 400:200/5 hmps.

'Two c u r r e n t t ransformers c o n f o r m i n g t o clause 16 shall be provided for rnetering rdhich.shal1 bs s p o c i - f i o d from

.any of the follocring r a t i o s : -

2 5 / 5 ( 50/10 ) ktnps 5 0 / 5 ( 100/10) Amps 100/5 ( 200/10 ) kmps

The metering c u r r e n t transforrnovs s h a l l be f i x e d i n such a manner t h a t they a r e v i s i b l e through a special small window i n the metering compartment wi th t h e CTs. ratio cast int.0 t h e resin body.

'*

Vo.I?a g e-l1_3 nsf~. l : !n QL:

T h i s shall be suppliocj i n accordance w i t h clausa 17.

7'1.10 v o l t a g e t~.ansfor;nei- s l l a l i bs of' the f i x e d type and n o fusoc s h a l l be pvovidecl e i t h e r on HT or LT s i d e .

The fol+lowiny insl:rtrrnonts, meter:; ancl 1-clays s h a l l )>e f i x e d on e a k h indust l - in1 pane l a t t h e hppt-cspriate ~ b s i t i c ~ n s ' a ~ requ i red and d e t ; ~ i l e d i n c lause 8.1.2:-

i . Ono Volmeter 0-i5 KV i i . Ore kmeter 0-200-400 A m p s i L

i i i . One K I . ; ~ .Met-er c l i t l ~ M D I .iv. One Kv2.1-1) Meter I . One R e la:/

. . '., 'F D .5.2 The a b ~ w e in s t ru~nen l ' s on#:{ rrlc t s r s s lml 1 be fui-nisl16d i h ' .

. 'accorclnr~co wi th t h e rnql~i~ernc?nt :s l a i d down' in clouso' 19''' . . and 2~ . I

8.5.:1 T l ~ u o ~ ~ ~ . c u I . I - E . ~ I ~ 1 c!la)' sIia1 1 I:Ic* irl ac.cc)r.dancc. blith I - ~ L I ~ J s ~ ? 15 a n d s l ~ a l l bo 118: spci.,\+-~:d, n o t r e q u i r i n g any sovr'c? ol' rJx!~i'rlill p~!.~el ' .

B .C r:-a!?-l?--.Is~:~r~i na.: ion, f'3.J. . .

..*. S.G.1 :\dequate facililjes Foi. ' : c~ -n~ ina t ing t h e c a b l e s s t ~ o l l bc ."

vrovidod a.3 i-c:r~uii.ecl i I I c: l ~ c i s c 4 . I @ .

9 R I N G HI'\ 1 bt F/\PI:IL ..'

9.1 G-9 1: q 1- .a !.. I

9.1 .1 Each I illy ~ n n i r ~ pa1181 :;hill l bc! o f 400 an11)s r a t i n g ancl s h a l l Iia*/n fo l l o~ . r i ng cquip~l~e ' f i t s . h s i n g l e line diagl-am ".' is shown i 1.1 cIi.airi ncr N c ~ . r~L!GI/TE.-C.E?l . I

.- . . . . i . 01-la t:ii.~::u.it I>r-er~kcl- 21:: 131?i. r -1yu .s~ 11 . . A :... . i i . T I - J ~ I ~ I ~ A C I I:11.~ak s t . : i ~ r - . h ~ - . s ; I 3 n e ~ clause 12. , . : .

.; j. i i . S i r C I . I I . I . ~ I I ~ t i 'ansfoi-~nel-s . -.. i v . C I ~ : F ! !.lire3 I ~ ~ I ~ J S E CIY LJ.II.cE. s i l l B i e phc750 vo1tar:je . .: .

I:I-~IIS f~>i.rnei.:; . . . .,i..' .. . . . *,I r ,: ~~~~s ! . . i . l ~h~cn l : a .ancl cl-~erhry m e t e r s ns ~ ~ c r G E I ~ C I S C 9.5. . .< : .

\ .. 1; i . Q I I C 1.12 1 ,yy ...I . . h'

---.. ; " .

v i i . C C i l : ) I ~ t . e ~ - ~ ~ i r ~ a t i o n z PFI.CI:S. :.:... . - , .I ;;,. .

, ..! . .+.:' , . ; ' , ,$ / : I :

. 'y.. .r: . ' I.'.. ..' .

-- , . .. .. . .' , .a

? . % . I The circ1.1i1.. brpakei. s l ~ i i l 1 t : ~ p of 400 aniI-..s r a t i n g , and . . . .

sha 11 ,be supp 1 i e d as pel- c laelse . I. 1 . T l ~ s 121-sa k i. h 0 .. ., . . ' ,:

c:apnci!)* sl ial l . 13.. 12 - 5 } : A . .. .

3 . . c !4!:.?:i;.!> $.. .. .?...I :3.!T+..C.!?>: .!?.c!:. _ . d .

Tbro s e t s o f 'c1.11 r e n t L l . : l r ~ s f c ~ i . m t a r s sl ial 1 Isr? .pi-o\ficled il-; . .. . pcr c lauso 8 . 3 . 1

' . ,

- 1 . l.l?e ' .do] 1::lgr;. . I . ? . ~ I I ~ ~ ( ; I . ~ F T ~ I - s h p 11 I;$IB f j . x c - 3 t y p ? 'and I r 1 0 I'\~r,e . .~II.> 1 1 :,r? pi-t>\;iiJet:l s j tl>r.i. .:sn I - i r .,I- 1-T side .

9 . 5 . 1 The f.oll'owing i n s t , r ~ ~ m e n t s , rrleters a n d r e l a y 1 s h a l l t ie f i x e d o n each p e n e l a t t h o appropriat-o p l ~ s i t i o n ! j a s

I required and clef-allocl i n c l q u s ~ ~ 0.1.2.

I! i . One voltrne5si- 0-l!; K V - i i . 0ne.arnetel- 0--200-400 Amps

( i i i , One r\\*~h rn.-tci- b ~ i t - t l MDI I I i v . O n e Kval.l> motel-

v . O n e r e l a y

I' 7.5.2 'The above i n s t r o m e r r t . ~ and ,rnetel.s .;ha1 l t ie f u r nished i n accoi -dance w i t h the rsquirc.,rnonts l a i d d c o n i n olaciso 19 an? 2 0 .

The over cur r crlt r e l a y s h a l l be i n accurcla n c e w i t h c;!;~use 15 and slraJ 1 I>e AC operated no t r e q u i r i n g ally ~3t.1rce o f . ex t t:r na l powel- .

t

i Acbquqte f a t i l . i t i c s for. tor .ruinat ion of' c-ablcri s h a l l be '' . . ' brovid&i AS r.ecluirod i ,n c l a u S i 4'. '10:

. .

~:~.?.4-..r?!:-sak .,.~!!.i..t.c!~as .- Each r i n g trtnirl p a n e ; , s h a l l com~w.ise of' tt~ro . & Y i p l e pole

lorid bv&,ak s k ~ i tches g c n c r n l l r ~:onfovmi ng t$ a l a u s o 1 2 . They s h a l l have "Ot-I". and " O F F " posi ticsris as i n d i c a t e d in s i n 6 l e l i n e clingram No. PDW/7E-F181.

I 'I'l~e load lsr €!a k si.ri k.cl sha 11 I,e c ~ f 1100 Amps 1-akcd . c u r r e n t witti short L i m a cur.r.or~t r a t i n g o f 1 2 . 5 K A .

P o s i t i v e tne9;-hanica 1 i n t e r l ~ c k ! ; :$ha1 I. be ~ ) r o v i d o d a s under , to p r e v e n t any malf' irnr,t ion.

i . notail thr! scr ikbhes s h a l l nct be "obi" a t tho same t i n le .

i i . L a c k i n g arrangement sl1a1.L be proviclad fo r the ' s b ~ i t c h i n "Ot I " arid " O F F " r > o s i t i o n for s a f e t y

' pllrposcJE;. i i i . Testing p l ~ ~ g s h u t t e r i f proviclecl s l ~ a l l o n l s opor?

ctlwn t h e ,o$>et 'at ing Level- o f t l ~ s s~tritch is i t - , "OFF" p o s i t i o n a n d the scritr.:h s h a l l r ~ o t be! " O N " until s l>utt .er is i n close p o s i t . i o n .

I

COI.ISU1IER @C\NEI-

!39-~.9-!la. 1.

R C.onsun\c:v Pi ir ls l i s i c l e r ~ ! i.c a I t f ~ s o l . l i y ~ i ng. ;>iinc.!, i a l l r e s p o ~ k a , e>:l- vpf - t h e .?rtcl g:, rncial. ing , i n r.,hic-.h /

.- ' I ' 3 .- C '-

. . . . . . . rogorcl l y , irn 05 i ~ e l Psne 1s c a b l e

, i t . i .cse~rlbles 1.0 ' an I 1 e . s ~ Bpcscif ic?d cil-l~ci-wi 1 a s t h e drabring!; e t c . rn~?nl:.ionccl in t:l-~iz: s p c to t t .~e consc~niel- P R ~ C ~

n i u s t r i . .

se here r e l a t j .

,cif icctl :

. . a l . pa I n , 'a ng t o ion ' .a

khc nrotcr i ng f o r wh.icti th6 . s p e c i f i c . p i*ov i s ions " l . a id ' i n , '

t h i s s r ~ c c i f i c a t i o n r e g o r d i n g tlie 1ndust .r ia. l Pane l shall ~ P P ~ Y , e c ar?p~.~:?r~i- ia tc . \~hcl-,hel- '3i11lh q. ' rcquirornent is 1 . , s p s c i f ic.al 1 y r ~ r o v i d e d $..*I: I - I c I . ~ ~ n or. ript . .. E < i ~ l i I > , O ~ I S ~ I I I I I ? ~ - r?,3lit?l ~ ! ~ a i 1 I. f:cf~i/!i* i s c L 1 - i ~ fof 10td i ng me 1-1 1 : --

1. . i'ir~e C i r . c u i C U.ri\aC:r!r. i i . S i x . : i ~ ~ ~ . l - ~ r l k - I : ~ - + - + ~ I S ~ , > I n 1 ~ 1 - 3 i i i . O I I P 3..1',1-1a:1.2 01. ~ 1 1 1 - c:{r si nc;l ~: . -pl iasa \ ~ o ' l t a y c

tl-a~ls'-rc'l ,'IrL.l.$ i v . Inr;L1.unicl1l:3 v . E n e r g y F1el:oi.s vj.. F' te laye v i i . TI-~ree s i rlul.2-vl~aso ~n.etaloxicJu ( y a p l e s s )

sur-gc or- l -es ta l .s v i i i .!:al;.lc Icr .n~i nakiorl pad i S i g n a l i n g larnt~s ,

~ L G - u A . !;~,.-U!:.~A!.LC_~'.. . .

1. +.- i.

I I

. I ' L . :I

1 . 1 1,v I t s l ia l l . r~icc?l t h e smrle recluircmcnts a s s p e c i f i e d i n . . .I . , . , , . clausc 4 - 2 .

CLI r I- e rI t- - : ~ ~ . i i ~ ~ . ~ c w ! ~ ~ r g . . . . . . ._ . ' I :;:* . ' 1 ...:;:

Curr-onc t i-ahsforniers shi111 nieeC t h e r e q u i r e n ~ e ~ i t s a s I . .:. i n d i c a l o d i n c l a u s c 6 .3, i d i t 1 1 k h e fo l l owing a d d i t i o n s : ..~':(t.

. , . , '. , ..:{.;,j ' k.

I n s t ' e a c l o'f two-core currorik. t r a n s f o r m e r s , ' two ' s e p a r a ~ b ~ ' ' ' ~ . ..! , ..pi 'sets o f s i n g l e - c o r e cCt\.r.:!nl: t r ans fo l -mer s , . i . e . one for , . ,;!, over--curi.enl; protcc . t iu~.r and t h e o thec f o r m e t e r i n g , ..I . i.

! I!

s h a l l bo pi-ovided, which s h a l l meet t h e r e s p e c t i v e ' ':i' . . r equ i r emen t s spec f ' f l ed a s pe r c l a u s e 16 . .The metering ; 9-

cur-ront k r - a n s f o r m e r s s h a l l . h a v e necessary provis io .ns '-.:.:!'. -,..

f o r s e a l i n g o f t h e sec inc l i~ry t e rmina l box besides bein~f,,':: l o c a t e d i 1.1 a s e p a r a t e , indepc!ndl?ntly :6ea lab lc ' . comp~l r - t - - i ; ., men<- is per, r l a u s e 13.1 - 3 . .; ;:

. . . 4 . I t slla1.l ~neec ' tlre r e q u i r e r - ~ c l ~ t s i nc1icate.d i n c l a ' c~so 5 . 4 . 1 .,:,

. . - ! 1 : . . . . J.,!l~-~~.yl!~?J.C~ >.,- J:l~~:;-:;~:~-.g!~~-~:~l..y~~ 1 i , : I ., :?

I .I

8 .

They ~ 1 1 ~ 1 1 1 meel: . tlic rcrrtli renlents i n J i ~ a L e d i n c i i l u s i : . j , F), 6.5. I n acldil-iuri, folli:tt;~ing n~et-.=.r.s s l r i ~ l l a l s o k.s lo.- . .. I.. i ... -1.i clad : ... 1 . :i

- .-- --A-

SR : C H A R A C T E R I S T I C S 12 . SKI", L',l?€:l'tt; - :.'SKI'\ 3REAIC-- N O . 1 tJG (3 9F'AC 1 TY I l - l G C:{,P/.IC I T't'

I

Rated vo l Lye Rated YIOI-1ne7 1 , ~ : u I - ~'cr~l ; Fr eql-cc nc:/ Ratsd slsorL c:.irc;~~:i.t .br ea k.i nfj cur i-l?rct , urn1 . Hatd Lransient recovery vo l Csge For ,

teumial f u a l t s . Rated short-circuit lnaking ccr l - ren t Rated one 111i n u t o pocrcr frequency ~ i t l l s t i t n c l vol Logo Rated l i g h t n i n g impc~lse w i t l ~ s t a n d vo.1 tag(? Ratecl @per a t i 11g sec1crenc:c :

.. .,. i ) 01-1 t-gc i n g & cririsunlel.

11 -6.1 .l'l.lc operat i 1-19 n ~ c ~ t i a ~ ~ i s~n sl~;ll 1 /.,a c l ~ a r gcJ zlbi. i 11g p o w e I-

r,lsc-t~ani:rrn wi push buLt,c~~s f or closi ng and or~cni ng t he ' [21-~3akc\. cler:tj- it;cll l y . TIII.: 1 3 3 \ 4 c ' ~ mel:hanism s l t a l l - comple ts ly lllanually indc?:ir?el.ldc.!it o f t h e opcrs to r and

?l.rall consis t - of :sr.>l.ing.~: ,:l.tn~.yer.l i r ~ s;~;.~:linc-.s>.~ fl.)~. ~ 1 1 3 ~ . i r t 3 o p e r a t i o n .

11 -6.2 'The c . i r -cu i t brca!.el- st-tiitll L.s: t r i p F c 5 : e . I t ma?, Irocre\lor, bc naoi2ncal.). . tl.,at t1-1~ n l ~ ~ i l . 1 ' ~ ~ " n t a c 1 ; ~ ; ~ > f ' t.Ii2 c; i I -CCI i t f:ii k ~ 1 ' :' mofilcllta'ril/ I-e,lc.l, L-iic ~:.l<,~;:~..j p c , ~ i l . i ~ ~ r l 1.0 ~ T I C - . I J I ' E : !>)'51><:'i-

break ing o f the c u r - r c n t . - . . C

11 - 6 . 3 T h e c los i r tg spring-; s h a l l 1:e;. charged t7:t ctrl IIC !r~i)t~ar . . r c i t e i j 240 0 ;?C w i t : h ~ * a t - i ~ l - i o r ~ r~ ,~ngc . af -1 l O Z a&:! .. 1!3 !':. I

11.6.4 i A ' c a s e of i n d u s t r i a l a n d r i n g m a i n p a n e l s , t h e closing - SPY i n g s may 11s I-~nrtd c l i a~ .gad .

I

. . I

1 , 'Tile pcrqer c~psl a Led tnni..l~ri~~~isn~ s h a l 1 a l s o be capaLl c o f rnnnual chn i ,g i \ -~g .

. - - 3 0 -

.'TT i p Coils .-

'r1.w tr.i(. c o i l s Lo ti.: I.)r.o8..iia:l<:rj in e;jc;ll l.;,l:~i. ~ $ 1 ' pan.21 s h i l l . be ~ i ~ d ~ r : .-

i ) ' 1nr:orniila pC~n:.l: . a ) 12.5; I<& 3 I.I,:,% o f ;ti_' t r i p c:<:ri 1% fcr 6 ~ ~ 1 -

.;Ul.i-Cr-lt 43nc:l can)-(-1-1 f ' a t ~ l l : p , - o t e c t i o r l and one K)C #:.oj:1 For conne.ct ion to . . ,:lifFc~-ontia 1 !>rr~tz :c : I ; i ( jn .

b ) 25 One' LiC t r i p coil 3ne AC t r i p c ~ i l f o r back LIP p r o t e c t i o n .

i i ) Ou t.go.i rig and collsanter 1x1 ne.1 : a ) ,12.5 EA (oul.g-:lj.ng)3 Plos. hC I-rip c c s i l s 13 ) 12 . 5 EA ( Corl:;crrtlts~- 1.3 t.la.3 . 6C: ,t,- i p and one DC: t . l L i p

I : :<I~ 1 . c) 25 I<A 0,-IP PC Lt.ip c o i l

i i i ) I n d u s t r i a l pal-121 3 t los. AC I - r i p soi 1 5 .

~poratior; Couritec

r? S.-J igiL cjpr?saLion zour~tc:r. :s l ia l l 'bc p~o. . . ; i i j~<l 1-o ,-aco\-d t h e .nurnbe.~- of or:*;-.nj.~ig c > ; ~ ~ r s k i o ) , ~ ? j f 1-11s ;..ir c1.1j.i bl'r:;:'il:i>\- . . ' .

The c i r cu i l ; ljl-(?a1.:e:. a u : < i l i a r y sbril;cli s l 1 ~ 1 1 I-~s\.;r: .r;*Jcqirate Nis. o f c o n t i ~ c t s so t h a t , i r l atjJi-ti"n t:c~ (;i:illL.~cL:; ; jc . tual ly i 1.; c ir-ct.~ i L connoact ion:3 , 31:. l~.!.:ist i :w.~ Idr! 41 n:! I:I.J~-.. 1.K 1:0nta~1;:; a r e spa;'c: Tol- I ' ~ . ~ L g r 2 1.1r;c. .

TETS L s

TI-ln, La$;Ls 1 ist;o:l . i f 1 c. l a u s ? 11 -7 . 2 at.;,d 11 - 7 . 3 siisl 1 Lr. I I I < ~ * > c .

i n nccr-,l-cl;lr,lce :.jii,l.! IzC f?ublii:;ttior~ 5G .-,I\. .>z,,c.p.;'i:i'l i t2d ! . , C I - Q - . . i n . Rout i ne Te0s ts

kz Tl~c fol . lowj .ng r o u t i n e L ~ s t s ~I I .J ! :Irna.de 01.1 a l l c i : ' i ~ .~ i l . . I:~i-c?akei,s i n accol-ilanc:~ rllitli s t . ,nndc~~-d~i nl.?nI:.i!:>nccl Ll-:cj-t;.\~iLl-~:.- i . power frequency voltage d r y tests

IE:C Pi rb l i ca t i on 56 1987 C lause 7 . 1 . i i . V o l t a g ~ . ! t es t ; <:In conl:r'sl ancl au>: i l i i~ l , ; , ,

c : l r c i l i t s ( I E C 5rj Clatlse 7.2). . i i i . I4c?asut~cm~?rI cef t l . 1~ r~sistancc o f t .hc ma i l.l

t i ; r c u i t ( I E Z 5i i Clat,~~::! 7.3). I . t-lcschanical oper-at:itig t:2s~s

( : [KC 5G, C.lac;:sc 7.101 j .

i - 36 CURFIENT TRANSF-ORlLR5 I 1 1 6 . 1 peqciremcnts

1 16.1 -1 T l ~ c cur rc l l t . t r a n s Foi - r i~c~-s~ c.1~11 1 Is(? r 1 1 3 1 1 l 1 r i t c I ( I T c:l a n d tcst ecl i n acco i -dance 1.ritl1 IEC. 1.3l5 aliil pn*'tit;ulc:~l- r .< . - c~e~ i i - s r~on t s l 'istetrl t ie r -c in .

1 ' 10.1.2 The cl.~i'i-c?nt t r . a r ~ ~ f ~ i - n ! c ~ . ~ - ~ c:ha11 l : , ~ ~;il.Ig1<! pdlC! , ~ ; ~ ~ ) : , ~ l - ~ ~ . i 1 - ~ . . il18~llat01:l. d1.y t y p e , :31?! f ~or'1ti3 i nr?cl :.;ti j. t aisle .fi>i- 'inocll-lti,ng i *

t h e switchgoal- narlc.1.~.

16.1.3 The t:i.aiisfoi.matiisn 1-alias r e q u i i - e i j for- * ; ~ ~ i - i ~ l l s 1-ypc:.; of '

s b l i t c t ~ y c a ~ o f cl i f fe l -en; r a t i n g s s h a l l \:re 0 5 f o l l o b r s : - For O v e r c u r r e n t P r o t e c t i o n & Metelring.

i . Incoming p.snc1 of 2 5 \.:A and '12.: 1<C1

breaking c a p a c i t y 1 G O 0 : 8 C ) 0 , z 5 - . 5 amps i i . Ol~tgoi r lg p . sne l s 6" 25. KAsi-lcl :i.2.5 K L I

rat: i r13 400 : 200/5-5 amps i i i . I n d u s t i ' i s l . arlcl Rii-I~J--1nair1 panc?l::.:

I --pl-otec,t;i*~s: CT 400 : 2 0 0 / 5 amps

--Molei- i 1.19 CT 25/5( !;O./:.'Q nip^,. c~r- 50/5( 100/'10 )amps or 100,'Fj (:!CO,'lO) .3lnl>.s. a s iiiclis:ht- cil i n lsitl c:+nquii sl.

1 . C O ~ I S L I I ~ I ? ~ piil-lcls -- Pi.otec:t i v e C7 2 \ 9 0 : 29C!,/5 i

--.- I4et,ci.in:j C T 4Q0:200/5

4 I

For D i f f e r e n t i a l P r o t e c t i o n I

!

! 1 6 - 1 -11 T l ~ o zcirr.enL l:.i.alis Fol-tnei.5 f a r tl'rc i n.:.o~ni \.I:-; an..rl c;?c~tyo i I . I ~ , p a n e l s et-l;~lJ I-I:I:.!~ ti .~g c.cll-ps. cind C<IC: I . I c o r e ~sI7al 1 b.2 clr-si yr1r.d '

: -for c>i- t j toct ion n11.j I I I ~ ~ C ! \ . ~ T I Y s~? i -~ i i : . r ? and .:.licill :1;.41:.i:~fj' I30l;h ~ -cq~ , l . i i - e rnon t sep i~ i . a t c l ;p . €!ol;b t.lie C:.;,~.CS Z;I)ZI 1 l \: re icIer~t;ic:a 1 .

. , Tiie x i - 1 - e n t t ~ - a ~ s s f o t . ~ n e i . s foi- t l ie j n:!~-~st.\- i a 1 and i ' i n g main p a n e l s ' s h a l l be s i r ~ g l e c . 0 1 ~ a rlcl ~ . < . p r l i . i ~ Lcly ,FI.CI\.I i CIPCI f 01- rnzter i n g and bi-ot.ocll.idr~ .

1 6 . 2 . R a t i n g s

1 6 . 2 -1. P r o t e c t i v e Core?-

The c o r e s meant F c ~ r pvc,tec:t.ive se i .v i ce sl-a1 1, Iisvc i .atecl ocltpl.rt 0.f 15 VA .3nd ?c;.:.eli'asy. .c 1 nsc. Ut F'20 .

16.2.2 Cl_eter i ng C ~ ~ o s

1 CTS arrd c o r e s meant. f o r rr~olei-ing s e r v i c e s l l a l l have a i aaLed o i r t l x~ t 01' 1C VA end bcc:c11-,3nc;, c l a s s 0.5 i n r ~ f

industl- i a l i r i r ~ g r ~ ~ a i n pane l s sncJ acctlracy class I .o i n a l l i

o t h e r cases . . 16 -2 - 3 S h o r t T i m e Currenp Ra t ing

- T11e r a t e d short ; Linie tliei-rnal current- r a t i n g s of c u r r e n t I

: I! t ~ a n s f u r m e r s a h a l l be 12.5 Kk f o r 1 2 . 5 K A p a n o l s a n d 2 5 K A , ,

I ' . f01- 25 K A p a n e l s . I

The laat ed clynaniic peak cu1-l.e17t, 181his!l t h e c u r r e l - ~ t t r .nasf or-m.- ' '

~ Y S s l i a l l \.rit:hstand oi thout beinrj clarnayed o l e e t r i c a l l y or mec;hanically s h a l l LC: 32 K A f o r 12 .5 KA p a n o l s and 63 E A f o r 25 I.:A p a n e l s . i

IC1.2.5 ------ I n s u l a t i o n Leve l s

The i n s t ~ l a t i o n l e v e l For tlrc currnlit. t r a n s f o r m s r s s h a l l bc a s g iven bc lo t~ : - -

0 1 1 ~ n1i11. ~ i ~ i ~ t ~ ~ e r sated l i g h t n i n g f?ateJ Vol Leyo frlzqc~sr~cy wi klistar~lrl i'rnpulse with- . $ , c ~ l t a ~ ~ ! , - ( 1 - I ~ G ) stand v o l t a g e

(.Peak ). ----- -- --.&Up ---

Pi- irnai::.' 4t :c C I T I ~ I I S ~ ' ) ' .'I2 l:V Ze, ., 2 K V 95 K V

T m e r a t u r e R i s e

The teniperatur e I- i s 2 o f the CTc; i~ri~:lcr condi t . ions s p c c i f ic!q:l i n c la i l se 3 aha1 L I-IOI. be rn~:.i-s than 4 0 degC. A I - e d u t t i o n o f 1 0 cleg~:: i n t h o pormisc i t~ lc - va lue s p e c i f i e d i n IEC 195 5 been marjc to acc:0~117t fo\- high arnbi c n t t,r=mpei.at.cri-e.

Torniinal Markings

TIla t e r rc~ina l niar king for' tl?c cur r o n t t r a n s f o r ~ n o r s s h a l l bc i n acco~-dancc wit11 IEC, 185.

Rating P l a t e Markings

1 6 . 4 -1. The r a t i n g p1.at.e marking s h a l l be a s s p e c i f i e d i n IEC 105 srld s h a l l car i -y a t l e a s t Ll~e f o l ~ C B G I ~ ~ C J i nfol-rnation i n an i n d e l i b l e manner- : -

I

a . Manufaci.urci- '9 name 01. t i EICIC. ma:-k , . I

17 VOLTAGE TI?ANSFORMERS

17.1, Genera 1 ...

Tlie voll-age Lronsfol-mers :.I1811 be se l f c o n t a i n e d , opoxy r e s i n inst-llatecl, indoor I,YI:.CI and z h a l l be manufac'tured I and t e s t - e ~ l i n t~c:corclsnc.e c1it.h IEC P u b l i c a t i o n 106 and tlie r - c q i ~ i r e m e n t . ~ l i ~ t o c l her-<!in.

I

Voltage t r o r ~ s f c ) r m e ~ - s c,hell t)e o f t h r o e p o l e type o f ' . r a t i c l l ,000/11.0 ' - ; l ~ l L s 01. :3 s i n g l o pol:: t;'pc o f I - a t i o I

JiTo00/~r.r0 v o l t ? ? ;

The retocl freq11er1c.y e,hilll be 50 H i and a l l r a t e d out- ' p~1t.s; a o ~ : i ~ r a c i t ? ~ and t e s t s ; s l i a l l ba f o r t h i s r a t e d ' frec1u~nc:y .

Ratings

The !stanclorr.l r a l i n g s o f L11e voltage t r ans fo rmer s h a l l I>e as u ndor : --

i . i i . . i i i . i v .

' v i i .

Nonii na 1 S.:*s t t!m Vo 1 t al;la 11 KV Ra Led secondary l:i3ge 110 \/

R a t e d f requency 50 Iiz Ratecl s e c l ~ n d a r y o l ~ t l ~ l l t a t l O O V A p e r phase 0 .O .P .F . Lagging S tandard acc1.11-acy c l ass 0 . 5 Ra tecl one mi n u t a p c ~ c ~ e r f r equcncy withsl-,and v o l t a g e ( I - ~ r ~ s ) :

a ) Pi'imary 36 k V I> ) Secondary 2 k\J

R a tecl 1 i g h t n i ny i.n~pal se wiLl15tsand \.lo1 tagc ( peak ) 95 Kt/

Rated Vol.ta=Factor '

Tho s t a n d a r d va luo o f r a t e d voltage f a c t o r s h d l l be 1.2 for, c o n t i nuoils duty ancl 1 .E- f o r 30 ~ c c o n c l s dur-*st ion.

Tempernturc R i s e

The tenlpr?rat,ur e I- i s e o f 1: ha vol tag12 t r a n s f or-mer u r d c r condit:io.-IS spec:ific,d i n c l a u s c 3 s h a l 1 not- I>c ml>i-e than 4 0 cleyC. k r e d a c t i o n o f 19 clcc,~~:: i n t h e pe i -miss iLle . vnlcle s p l x i f i e d i n Itc:' lE.6 I ~ a s bo4.n rnal:Is t o account fo r hi911 s r ~ b i e n l ; t.en~per a tu1.c.