SELECCION DE AISLADORES

Hoja1PROPIETARIOGOBIERNO REGIONAL DE CAJAMARCAEJECUTANTE :SUB GERENCIA DE ESTUDIOSLINEAS Y REDES PRIMARIASLINEAS DE SUB TRANSMISIONLINEAS DE TRANSMISIONPROYECTO:"INSTALACION Y AMPLIACION DEL SISTEMA DE ELECTRIFICACION RURAL EN 18 LOCALIDADES DE LOS CENTROS POBLADOS HUACATAZ, OTUZCO Y SANTA BARBARA"RED DE DISTRIBUCION PRIMARIA EN 22.9KVDEPARTAMENTO:CajamarcaPROVINCIA:ContumazaDISTRITO:ContumazaFECHA:2009:ENCABEZADO 1 ::SELECCION DEL NIVEL DE AISLAMIENTO Y DE AISLADORES PARA

SEL_AISL_27kV polim (LP)SELECCIN DE AISLADORES TIPO PIN Y POLIMERICOS"INSTALACION Y AMPLIACION DEL SISTEMA DE ELECTRIFICACION RURAL EN 18 LOCALIDADES DE LOS CENTROS POBLADOS HUACATAZ, OTUZCO Y SANTA BARBARA"RED DE DISTRIBUCION PRIMARIA EN 22.9KVCUADRO N 01SELECCION DEL NIVEL DE AISLAMIENTO Y DE AISLADORES PARALINEAS Y REDES PRIMARIAS 22.9 [kV]CONDICIONES DE OPERACIN DEL SISTEMA ELECTRICO6Tensin nominal de servicio entre fases[kV][kV]22.9Tensin mxima de servicio entre fases[kV][kV]25Punto ms alto de la zona de Proyecto[m.s.n.m.][m.s.n.m.]4350Temperatura media[C][C]15Nivel de contaminacin ambiental[Nivel][Nivel]BAJO:BajoTipo de Conexin del Neutro[Tipo][Tipo]Neutro Aislado:Corrido multiaterrado.Nivel Cerunico[Torm./Ao][Torm./Ao]60:60 Tormentas ao(**)1. SELECCION DEL NIVEL DE AISLAMIENTONIVEL BASICO DE AISLAMIENTO NORMALIZADO A NIVEL DEL MARTENSION NOMINALMAXIMA TENSIONNIVEL BASICO DE AISLAMIENTOTRIFASICO DEL SISTEMA OTRIFASICA DEL EQUIPOALTITUDREFERIDO AL NIVEL DEL MAREQ. TRIFASICO DEL SISTEMAEQ. TRIFASICO DEL EQUIPOA FRECUENCIA DE SERVICIOAL IMPULSO[kVrms][kVrms][m.s.n.m.][kVrms][kVpico]22.9250 - 100050125FACTORES DE CORRECCIONZONAALTITUDFACTORES DE CORRECCIONFACTORSegn C.N.E. Tomo IV-Norma IEC 137DE CORRECCIONm.s.n.m.POR ALTITUDPOR TEMPERATURARESULTANTE1000I0000 - 10001.00001.001.003000II2100 - 30001.25001.001.254000III3100 - 40001.37501.001.384400IV4100 - 44001.42501.001.432. CRITERIOS PARA LA SELECCION DE AISLADORESA). SOBRETENSIONES EXTERNAS (NORMA I.E.C. 71-1)ZONANIVEL BASICO DE AISLAMIENTOAISLADORESAISLADORESALTITUDA FRECUENCIAAL IMPULSOTIPO PINTIPO SUSPENSIONDE SERVICIOPOSITIVONEGATIVOClase ANSIPOSITIVONEGATIVOPOLIMERICOm.s.n.m.[kVeficaz][kVpico][kVpico][kVpico]8[kVpico][kVpico]15I0000 - 10005012525026556-3225355POLIM_28kVII2100 - 30006315625026556-3225355POLIM_28kVIII3100 - 40006917225026556-3225355POLIM_28kVIV4100 - 44007117825026556-3225355POLIM_28kVB). SOBRETENSIONES INTERNAS (NORMA ALEMANA VDE)ZONAVDEAISLADORESAISLADORESALTITUDTENSION DISRUPTIVA BAJOTIPO PINTIPO SUSPENSIONLLUVIA A 60 Hz CALCULADOPOSITIVOClase ANSIPOSITIVONEGATIVOPOLIMERICOm.s.n.m.[kVeficaz][kVeficaz]8[kVpico][kVpico]14I0000 - 1000598056-395355POLIM_27kV_LII2100 - 3000718056-395355POLIM_27kV_LIII3100 - 4000778056-395355POLIM_27kV_LIV4100 - 4400798056-395355POLIM_27kV_LNOTA: La Tensin Disruptiva Bajo Lluvia a Frecuencia de Servicio que debe tener un aislador, no deber ser menor a : UC = 2.1(U*FC + 5) ... [kV]B2). NATIONAL ELECTRICAL SAFETY CODE (NESC)ZONAVDEAISLADORAISLADORALTITUDTENSION DISRUPTIVA00EN SECO0.75*VPERF00.75*VPERFNEGATIVO0m.s.n.m.[kVeficaz][kVeficaz][kVeficaz]7[kVpico][kVpico]14I0000 - 10001100109NO CUMPLE0355POLIM_27kV_LII2100 - 30001380109NO CUMPLE0355POLIM_27kV_LIII3100 - 40001510109NO CUMPLE0355POLIM_27kV_LIV4100 - 44001570109NO CUMPLE0355POLIM_27kV_LLos aisladores sern diseados de forma tal que su tensin disruptiva en seco no sea mayor que el 75% de su tensin de perforacin a la frecuencia de servicio.La tensin disruptiva en seco segn el NESC no debe ser mayor al 75% de la tensin de perforacin a la frecuencia de servicio.C). CONTAMINACION AMBIENTAL (NORMA I.E.C. 815)Minima Distancia de Fuga Especfica Nominal:BAJO16[mm/kV]ZONALONGITUD DE LINEA DE FUGA PORAISLADORESAISLADORESALTITUDCONTAMINACION AMBIENTAL CALCULADOTIPO PINTIPO SUSPENSION1LINEA DE FUGAClase ANSILINEA DE FUGANEGATIVOPOLIMERICOm.s.n.m.[mm/kV][mm][mm]8[mm][kVpico]14hd1000I0000 - 10001638353356-3600355POLIM_27kV_L67.030.9143000II2100 - 30001643553356-3600355POLIM_27kV_L52.140.7114000III3100 - 40001646353356-3600355POLIM_27kV_L45.990.6274400IV4100 - 44001647553356-3600355POLIM_27kV_L43.740.596NOTA: En la zona de proyecto, se tiene un nivel de contaminacin del tipo III, Segn la Tabla II, de la Norma IEC-815al cual le corresponde una mnima distancia de fuga especfica nominal de:16 [mm/kV]4580.95590985491.8808135923479.1246764859h45.2623647139d0.6213288247L464.8306042125

CONTAMINNIVELES DE CONTAMINACION AMBIENTAL Y DISTANCIAS DE FUGANORMA IEC 815:GUIDE FOR THE SELECTION OF INSULATORS IN RESPECT OF POLLUTED CONDITIONSTABLE IPollution LevelExamples of typical enviroamentsI. Light Areas without industries and with low density of houses equipped with heating plants. Areas with low density of industries or houses but subjected fruquent winds and/or rainfall. Agricultural areas1) Mountainous areasAll those areas shall be situated at leas: 10 km to 20 km from the sea and shall not be exposed to winds directly from the sea2)II. Mdium Areas with industries not producing particularty polluting smoke and/or with average density of houses equipped with heating plants. Areas with high density of houses and/or industries but subjected to frequent winds and/or rainfall. Areas exposed to wind from the sea but not too close to the coast ( least several kilometres distant)2)III. Heavy Areas with high density of industries and suburbs of large cities with high density of heating plants producing pollution. Areas close to the sea or in say case exposed to relatively strong winds form the sea2)IV. Very heavy Areas generally of moderate extent, subjected to conductive dusts and to industrial smoke producing particularty thick conductive depposits. Areas generally of moderate extent, very close to the coast and exposed to sea-sprig or to very strong and poluting winds from the sea. Desert areas, characterited by no rain for long periods exposed to strong winds carring sand and salt, and subjected to regular condensation.1)Use of fertilzens by spraying, or the buraing of crop residues, can lead to a higher pollution level due to dispersal by wind.2)Distances from sea coast depend on the topography of the coastal area and on the extreme wind conditions.TABLE IIPollution LevelMinimum nominal specific creepage distance1)Pollution Level[mm/kV2)]1I. Light16BAJO2II. Mdium20MEDIO3III. Heavy25PESADO4IV. Very heavy31MUY PESADO1)For the actual creepage distance, the especified manufacturing tolerances are aplicable (see IEC Publication 273: Dimensions of Indoor and Outdoor Post Insulators and Post Insutator Units for for Systems with Nominal Voltajes Greater than 1000 V, IEC Publication 305: Charasteristics of String Insulator Units of the Cap and Pin Type. IEC Publication 433: Characteristics of String Insulator Units of the Long Rod Type, and IEC Publication 720: Characteristics of Line Post Insulators).2)Ratio leakage distance measured between phase and earth over the r.m.s. phase value of the highest voltge for the equipment ( see IEC publication 71-1)Notes1. In very lightly polluted areas, specific nominal creepage distances lower than 16 mm/kV can be used depending on service experience 12 mm/kV seems to be a lower limit.2. In the case of exceptional pollution severity, a especific nominal creepage distance of 31 mm/kV may not be adequate. Depending on service experience and/or on laboratory test results, a higher value of specific creepage distance can be used, but in some instances tha practicability of washing or greasing (see Appendix B) may have to be considered.TABLE IIISpecificArtificial Pollution TestSeverity withstand values it the phase to earth voltajecreepage distancesSolid layer methods(see column 2 Table II)Salt fog methodS.D.D.1)Layer Conductivity[mm/kV][kg/m3][gr/cm3][S]165 to 140.03 to 0.0615 to 202014 to 400.10 to 0.2024 to 352540 to 1120.30 to 0.603631> 160--1) S.D.D. Salt Deposit Density.

STANDARBILStandardized Test VoltageIEC Publication 71-1,1976:Coordination of insulationDraft 17A (C.O.) 136:New specifications for dielectric testsEuropean practice end other countriesU.S.A. and CanadaRatedTest voltageImpulse voltageRatedTest voltage 60 Hz.Impulse voltageVoltage50 Hz, 1 min.1.2/50 msVoltage1.2/50 mstoacrosstoacrossTo earthAcross open contacts 1)toacrossUmearthopenearthopenUmDryWetDryWetearthopencontacts 1)contacts 1)1 min10 s1 min10 scontacts 1)2)2)2)3)3)2)2)2)2)2)3)3)kVkVkVkVkVkVkVkVkVkVkVkV3.6101220 4)23 4)4.76 I19-21-606640467.2202340 4)46 4)8.25 I26-29-758360708.25 F353039339510512283260 4)70 4)15 I36-40-95105758517.5384575 4)85 4)15.5 I50-55-1101219511015.5 F5045555011012124506095 4)110 4)25.8 I60-60-12513812514525.8 F70607766150165367080145 4)165 4)38 I80-88-15016517019538 F958010588200220529511025029048.3 I100-110-20022048.3 F12010013211025027572.514016032537572.5 I160-176-35038572.5 F175145193160350385100 E150175380440100185210450520123 E185210450520123230265550630145 E230265550630Above Um = 100 kV, es European practice145275315650750170 E275315650750170323375750860245 E360415850950245 E3954609301050245460530105012001) Only for isolators and earthing switchesUm = Max. Service voltage of the network between phases2) RMS valueI = Indoor execution3) Peak valueF = Outdoor execution4) For effectively earthed neutral with additional overvoltage protection or lightning arrestersE = Reduced insulation, permmisible only for effectively earthed neutralIEC Publication 71-1,1976:B34Coordination of insulationDraft 17A (C.O.) 136:New specifications for dielectric testsRatedTo earthAcross open contactsVoltageTestImpulseSwitchingTestBias test: IS + 50 HzSwitchingBias test: SS + 50 HzUmvoltagevoltagesurgevoltageLightningsurgeSwitchingsurgesurge50Hz, 1min1.2/50 ms250/2500 ms50Hz, 1min1.2/50 ms250/2500 ms250/2500 ms2)2)3)3)2)3)3)3)3)3)kVkVkVkVkVkVkVkVkVkV300380950750435950+170850700+24510508501050+17036245010508505201050+205950800+29511759501175+20542052013009506101300+2401050900+345142510501425+240525620142510507601425+3001175900+430155011751550+3007658301800130011001800+43515501100+625210014252100+4352) RMS valueUm = Max. Service voltage of the network between phasesIS = Lightning surge3) Peak valueSS = Switching surge

DAT_AISL_BILCARACTERISTICAS DE LOS AISLADORESAISLADORES TIPO PINVoltaje de Flameo de Baja FrecuenciaVoltaje de Flameo CrticoLongitud deMnima TensinClasea Frecuencia de ServicioAl ImpulsoLnea de FugaPerforacin aANSISecoHmedoPositivoNegativoFrec. de Servicio[kVrms][kVrms][kVpico][kVpico][mm][kVrms]155-1352050701025037.5LINEAS DE

DISTRIBUCION255-2502575951277052.5355-365351001301789067.5455-4704011014022911586.25555-5854514017030511586.25656-1956015019033013097.5756-211078175225460145108.75856-312580200265533165123.75956-414095225310686185138.751056-5175125275340864225168.7511POLIM_12kV_C7050115160300LINEAS DE

TRANSMISION12POLIM_12kV_L705011516037213POLIM_15kV_C755012017037514POLIM_15kV_L755012017046515POLIM_27kV_L807012017060016POLIM_28kV1209017020075017PR15/LP15957515018040018PR35/LP351159019022555519KL-138H-BS-31460375735346220KL-138H-BS-34500405795379521KL-138H-BS-37540440860412822KL-161H-BS-40580470920446023KL-161H-BS-43625510990479324KL-161H-BS-466705451055512625KL-230H-BS-497155851120545926KL-230H-BS-527606201185579127KL-230H-BS-5580565512506124AISLADORES TIPO SUSPENSION O ANCLAJENVoltaje de Flameo de Baja FrecuenciaVoltaje de Flameo CrticoLongitud deMnima TensinClasedea Frecuencia de ServicioAl ImpulsoLnea de FugaPerforacin aANSIAisladoresSecoHmedoPositivoNegativoFrec. de Servicio[kVrms][kVrms][kVpico][kVpico][mm][kVrms]152-3 /1U18050125130292110LINEAS DE

DISTRIBUCION252-3 /2U215590245255584110352-3 /3U3215130345355876110452-3 /4U4552-4 /1U18050125130292110652-4 /2U215590245255584110752-4 /3U3215130345355876110852-4 /4U4952-4 /5U510POLIM_15kV_C12860300LINEAS DE

TRANSMISION11POLIM_15kV_L1287537212POLIM_17kV_C13875427.513POLIM_17kV_L13895542.514POLIM_27kV_L1509560015POLIM_28kV113010022526562016RP41725910711337017RP10112510524025090018RP141160145280316130019KL69HBS 131215170355146620KL69HBS 161260205425179821KL69HBS 191300235485213122KL-138V-BS-311460375735346223KL-138V-BS-341500405795379524KL-138V-BS-371540440860412825KL-161V-BS-401580470920446026KL-161V-BS-431625510990479327KL-161V-BS-4616705451055512628KL-230V-BS-4917155851120545929KL-230V-BS-5217606201185579130KL-230V-BS-55180565512506124NOTAS:Aisladores CLASE ANSI 52-3, llamados Aisladores de Suspensin Tipo Cuenca y Bola ("Ball and Socket").Aisladores CLASE ANSI 52-1 y 52-4, llamados Aisladores de Suspensin Tipo Clevis.NIVELES BASICOS DE AISLAMIENTO NORMALIZADOSTENSION NOMINALMAXIMA TENSIONNIVEL BASICO DE AISLAMIENTOTRIFASICO DEL SISTEMA OTRIFASICA DEL EQUIPOALTITUDREFERIDO AL NIVEL DEL MAREQ. TRIFASICO DEL SISTEMAEQ. TRIFASICO DEL EQUIPO[m.s.n.m.]A FREC. DE SERVICIOAL IMPULSO[kVrms][kVrms][kVrms][kVpico]1LP.RP.NIVELES BASICOS DE AISLAMIENTO NORMALIZADOS DE REDES DE DISTRIBUCION20.38 a 0.4410000 - 45002.5-37.62120000 - 10002875410120000 - 10002875513.214.50000 - 10003895622.9250000 - 100050125733360000 - 1000701708L.S.T.NIVELES BASICOS DE AISLAMIENTO PARA LINEAS DE TRANSMISION944520000 - 1000952501050520000 - 100095250116072.50000 - 1000140325

MBD00018867.unknown

MBD00020415.unknown