GUÍA DE RESISTENCIA DE SUELOS
INDICE
¿DE QUE TRATA?
El Presente documento consiste en informar los resultados obtenidos de las mediciones de resistividad de terreno, calcular de resistividad equivalente del terreno y proyectar una malla de puesta a tierra. La obra se denomina: Ampliación y Habilitación SAR Renca ubicada en Avda. José Manuel Balmaceda Nº 4012, comuna de Renca.
Las Normas y estándares considerados para el análisis del sistema de puesta a tierra, son los siguientes:
SEC, Superintendencia de Electricidad y Combustible. INN, Instituto Nacional de Normalización.
En aquellos casos no cubiertos por las Normas y Leyes nacionales, las normas, códigos y reglamentos de instalación analizados, son los siguientes: IEEE, Institute of Electrical and Electronics Engineers. Guía de seguridad de puesta a tierra en subestaciones de corriente alterna.
OBJETIVO
Los objetivos del presente informe son los siguientes:
- Determinar la resistencia equivalente del terreno.
Diseñar una malla de puesta a tierra.
ANTECEDENTES
Calculo de sistema de puesta a tierra
Criterios de diseño
- Mantener la Equipo tencialidad del sistema, igual potencial, es decir, todos los puntos de la instalación deben estar al mismo nivel de tensión ó voltaje, según normativa eléctrica vigente NCH Elec…
- La resistencia de puesta a tierra, según el apartado NCH Elec. dice: ”La resistencia combinada de todas las puesta a tierra resultantes de la aplicación de esta exigencia no deberá excederá los 5 Ω” El tamaño del conductor según el apartado NCH Elec. dice: “La sección mínima del conductor de puesta a tierra de servicio será de 21 mm2 , si se usa conductor de Cu”.
Cálculo de resistividad equivalente
- El valor de la resistividad equivalente, se determinara utilizando el método de Burgsdorf – Yacobs, el cual establece que el valor de la resistividad equivalente de un terreno ( ρe ) está dado.
CONTENIDO
- introducción
- objetivos
- normas y estándares
- datos generales
- instrumentos utilizados..
- especificaciones técnicas
- método de medición
- resistividad del terreno medido
- curva patrón orellana & mooney
- grafico de comparación orellana & mooney
- interpretación de la curva geoelectrica
- valores de resistividad y espesores del terreno
- calculo de sistema de puesta a tierra
- criterios de diseño.
- cálculo de resistividad equivalente
- procedimiento de cálculo
- resistividad equivalente
- calculo de resistencia de malla por método schwarz
- diseño de la malla puesta a tierra
- conclusiones
COMPARTE AHORA Y DESCARGA GRATIS AQUÍ ABAJO
COMPARTE AHORA Y DESCARGA GRATIS AQUÍ ABAJO
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