GUÍA DE RESISTENCIA DE SUELOS
¿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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