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nNsi�it:er: <br /> �^97.Z�.a�9N� IF.F.F;STANDARD FOR MFTAI�FNCLOSF:U <br /> jected to ell plenned production tests prior to bly comprinea a combination of primnry and <br /> initiation of the conformance test program.t eecoadary circuits, each may be qiven ratin�;s. <br /> ME[switchgeer having primary circui[s enall <br /> NOTE:The confartr.enre[eete mey,or mny not,be eimiinr heve the followin ratin <br /> to ttrtxin dnign teela. Demonetrntion uf inergin(copubili� g B8� <br /> tia�beyond the atandnras ie nue re�uired. (1) Rated mnximum voltnge <br /> (2) Rated frequency <br /> 2.8 fleld teste(for ewitchgear).Teete mede after (3) Rated ineulation levels <br /> the essembly hes been installed at its place of (4) Rated continuoue current <br /> utili7ation.t (6) Fiated ehort-time current <br /> (6) Rated momentary current <br /> 2.8 ewitch compertment. Thet purlion of thc The desiqnnted retinge in thie standnrd ere <br /> ewitchgeer assembly that containe one switch- preferred but are not coneidered to be reslrio- <br /> ing device,auch ea an interrupter switch,power tive. <br /> fuse interrupt�r �witch comhinntion, etc, nnd In nddition to these retin��, MEI switchgenr <br /> Lhe associuted primary conJuciors.' muy have interrupting or awitchinK capabilit�. <br /> which ia determined by the reting of Lhe pertic- <br /> ZIO verticel eectlon. Thet portion of the ular interrupting and switching devicea thet are <br /> ewitchgear aeeembly between two eucxeeive integrai parts of the switchgeer aeeembly.Refer <br /> vertical delineetiona nnd may contain one or fo eper:ific American Nationel 3tendarda for the <br /> more ewitch compartments and eseocieted pri- retings oC these devices. <br /> mary conductora.' For ra�ings oC pnrticuler interrupting end <br /> swiG:hing devicea such es interrupter ewitches <br /> and fueee, refer to epecific American National <br /> Stnndards for euch devices. <br />' 3. 9ervice Conditione <br />' � American National 3tandarde for the design Table 1 <br /> I and performance of ttiIEI ewitchgeer ee besed on Voltege and Ineuletlon I.evels — <br /> ueuel eervice conditione ee deecribed below.The Rated Ineuletion I.e�ele (kV) <br /> eelection of equipment Cor e perticular appli- pa� yaw <br /> I cetion can be beaed on the construction and ret- Me=imum Freque��cy R�feronce' <br /> ings ee defined in thie etandard provided that �0��° H'�«�d Impulee ac <br /> these usuel service �ronditione exiat. �V) (rms) Withecind Withetend <br /> (1) The tempereture of the cooling eir (.em- �'Ts i9 6° l7 <br /> bient air tempereture).eurrounding t6e enclo- 1s.o sa e6 eo <br /> eure af the MEI ewitchgear ie within the limita 16.6 50 1w �o <br /> of —30'C end +40'C. g'o e�o is�o f <br /> (2) The altitude of the Inetalletion doee not - <br /> exceed 3300 1't (1000 In) "�e�olumn headed dc WitAntand fe�{iven ee s rofarence I <br /> only for thaee unmg dc teete W verffy lhe integrity of mn- <br /> (3) The e((ect of eolE� iadietion ie not eignif- nected mble i�utallatlons without disronnecHng ehe ceblee � <br /> icant. (The principles etated in ANSI/IEEE from lhe nritchgeer.It rep'eeenb vsluee believed W be ep <br /> � propdate and appro:imetely equlvalent W tha correapond- <br /> C37.24-1971 (R 1984) [6] may be ueed for guid- �„qpo„e�heyuency..iuierenaeeeevalu.aepec�fiedtoreeeh <br /> enc8.) . , ; �, .. � . ' �vo1pR t�tln6 ot swltchgear. T6e prseoce of thL mlumn <br /> , (4) Unueuel,.�81'V�CB;COI1dlElOtl4�ByC}I 98.CUtr �°°o wsy,imptls my requiromant Tor i dc w�theisnd teet <br /> lined in 71 do�not preqail. ': 10;. � . °ecoepa�bie��teraative�m tha lo�w•(ro�'qd n��i.�'�k�eee�i�v <br /> . . . . epecifled in thL etanderd,either(or daign teeta,�Produdion <br /> tesfe,eonform�nce teste,or Iteld teele.Whnn making de teeb, <br /> the voltege ehould be raixd W lhe teet velue in diecrete <br /> e4pe end helA for e period of 1 min. <br /> i 4. RHttT�B 1Beceueeaflhevarieblevollagedie�dbutionencowd•..ed <br /> whem m�kinR dc withatnnd [eets,lhe menufocWrer ehould <br /> be cm�tac4vl for rimmmendnliann before npplying de with- <br /> , 4.1 GeneraL The rntings o(n switchgenr nsr.e�m� xtnnd t�wtn to the swi�chgenr. rotentinl tromfnrmen nM,ve <br /> bly are designntions o( operuting limitx under ��6 kt' ehould be Jiscnnnecu,d when �nt�nK wi[h Jc See <br /> ANSI/IEF.F.C57.1,4�1978(R 19fl6)[8�.Section 8 nnd in pnrv <br /> epecific conditions of nmbient tempereture,LCRI- ���uler8.8$which rendn"Periodic kena[ron lentaehould not <br /> pCief,UiC TIBC,OCC. WIleYO C}10 BWIf.CI1gC0P uBeOm- be epplied lo trane(ormere of higher lhnn :14.5 kV retmg." <br /> 1`? <br /> I <br />