En donde se utilicen locomotoras Trolley, la altura de la línea de contacto será de 1.80 m para una tensión máxima de 250 voltios y 2.20 m, para una tensión máxima de 650 voltios. La tensión máxima permisible para la línea de contacto en bajo tierra es de 750 voltios. CAPITULO III. PREVENCIÓN CONTRA INCENDIOS Y EXPLOSIONES.
Decreto 1335 de 1987 →In force
Article 139
Decreto 1335 de 1987 · mediante el cual se expide el reglamento de seguridad de las labores subterráneas.
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