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By J.M. Redondo; M. Domínguez

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Parte 2-5: Requisitos particulares para los transformadores y unidades de alimentación para máquinas de afeitar. UNE-HD 603 (serie) Cables de distribución de tensión asignada 0,6/1 kV. EN 61196- 2 :1995 Cables para frecuencias radioeléctricas. Parte 2: Cables semirrígidos y coaxiales con aislamiento de politetrafluoretileno (PTFE). Especificación intermedia. EN 61196-3:1999 Cables para frecuencias radioeléctricas. Parte 3: Especificación intermedia para cables coaxiales para redes locales. EN 61196- 3- 2:1998 Cables para radiofrecuencia.

Ninguna de estas tres medidas debe ser inferior a 50 000 1 para poder considerar el suelo como no conductor. Si el punto neutro de la instalación está aislado de tierra, es necesario, para realizar esta medida, poner temporalmente a tierra una de las fases no utilizada para la misma. Tensión de contacto. Tensión que aparece entre partes accesibles simultáneamente, al ocurrir un fallo de aislamiento. NOTAS: • Por convenio este término solo se utiliza en relación con la protección contra contactos indirectos.

UNE-EN 50086- 2- 4:1995 Sistemas de tubo para instalaciones eléctricas. Parte 2-4: Requisitos particulares para sistemas de tubos enterrados. UNE-EN 50086- 2- 4 CORRIGENDUM:2001 Sistemas de tubos para la conducción de cables. Parte 2-4: Requisitos particulares para sistemas de tubos enterrados. UNE-EN 50086- 24/A1:2001 Sistemas de tubos para la conducción de cables. Parte 2-4: Requisitos particulares para sistemas de tubos enterrados. UNE-EN 50102:1996 Grados de protección proporcionados por las envolventes de materiales eléctricos contra los impactos mecánicos externos (código IK).

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