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-17CSIR-CENTRE FOR CELLULAR MOLECUL R BIOLOGY[ Council of Scientific Industrial Research]HYDERABAD 500 007REF:CCMBIWKS-18/13

NAME OF WORK : REPLACEMENT OF CT PROTECTIVE REL YS AT 33KvSUB-STATION A.C .PLANT AT CSIR-CCMB CAMPUS.CAMPUS.TECHNICAL SPECIFICATION

FOR MICRO-PROCESSOR BA SED NUMERICAL PROTECTION RELAYProtection , Control , monitoring and metering relay shall be prov ided in oneintegrated digital package for application on 33kV substation incomer feeder 1 No)and transformer outgoing feeders ( 2Nos) and incorporation on an integrated substation control system. The relay manufacturer/supplier shou ld make sure that all thefollow ing requirements are sat isfied by the relay.A. PROTECTION AND CONTROL FUNCTIONS:The relay shall include the following protection and control features :

1. Time over current elements: one for each phase, one for ground.2. Time over current curve characteristics: 4 pre-config ured lEe curves : norma l,inverse, extremely inverse, definite time; and one user configurable .3. Instaneous over curren t for phase and ground, each of which areindependently enab led. It shall be possible to block the instantaneous trips using therelay I/O inputs.4. A thermal image protection element for protecting equipment against overheating dueto excessive load.5. Minimum 4 Nos. of configurable Outputs shall bwe provided. The configura bleoutputs shall be assigned either to a set of preconfig ured values. or an OR / NOTcombination of the same values. Each configurable output shall be independentlylatched and individually selected as NO or NC. The outputs shall be capable ofproviding a means to remotely operate the circuit brea kers via a network.

For Ganesh Electrical ontractorl

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18B. MONITORING & IVjETERING,Ihe relay should be capable of .neas.. In] c1 ld i i l l ) l l1, Event record2. Analog/digital oscilloqraphy3.K1 2 counter for breaker maintenance

4" Per phase current meterinq

C. METERING FEATIJRES:The relay should perform the tol.owino rneasu.ements1. The relay shall store up to 32 eve.its .irne t g g ~ d lo f Ie nedlC f l q l l l ~ ; ( ~ , . ; l H : U , Inci pickups! trips.contact operations alarms and se'f-test S a tus -; 1',,:1 \ ; ~ i l l i E : S CJj ( ~ l i n E : r ' T ~ cHICstatus of all the protection elervr ts at the moment of it f- jVPf' t :;( lc 1 r)!-: I ~ C ' ( ) r

E. C O M M U N I C A T I O N : R S 3 ~ F ~ S 4 ~ 5 C O I T H Y 1 U ; I ~ C ~ t t L J n H i s l Icomputer access using ModBus I = < T l J ~ protocol.F. INPUTS AND OUTPUTS:

A provision must be provided for rncdifying the factory c o n i : ~ ~ l u r ( d ' i \ n )":outputs using software in relc,t;.G. SOFTWARE:1. Windows based software tools mus: be )ro\ , j jed a l ' J i ~ ~ _ : .v.t.: t 2. Docurnent and software acuvinq toolset must be f i r ~ J v i d e d tu ~ i 1 s u r t : t11al r : ; f t ~ f e n c e material and device utilities are uP- a-date

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-1:I . . ... ", . 3, Software Integrator must ) 8 provide .l for :' r; ' \, i :: i :(: " , ; iI t I

relay into new or existing rnonitorinq ard c c : t ! ) i , ;T"H. TYPES TESTS :It shall be certified by the supplier th e ; 1he I i ' , ( ,(( : 1 ' : : , : >standards ,I. INSTRUCTION MANUALComplete Instruction ma nuals de scr tptiveby the supplier of til e relay ,J. INSTALLATION & O M M I S S I O N

Th e relay shou ld be installed . tested ,n c! C Y ; lI (i!: , ' ; -, u j 'i ' , , I ,: ,pra ctice at site ,TECHNICAL SPECIFICA nONS Of (:U FR FN f l \ , ' , ), '\ \:: ;..(.._ - "" .'..._., . - ... _. .-

Rat ion : 50/5-5. " \ f , Rated Bu rde n v. . . . .. , .Accuracy Cla ss 1 ':1

ISF/ALF .., : , , ,, -.TC l \ li j \ Fe: . ''' J .. ; . I . j ,Frequency 5(:H:'Nominal System Voltage v I P 'l l8 1L Y..' ,. ': ., :i Applicable Standard i : \ ': " ,Insulators having creepage dis tan ce :: ; ' 1.k\: , r : ,, :) 1, :, 1 :' i ;Ty pe of Construction Oll t -Jc ::' r h Ci'rr::; : , :I :: , -:.:, ' 1

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Make :

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