Structures for mine shafts - Headframe structures Ingestion-build-44680 electrical arc protection devices

electrical arc protection devices

method A is the reference method

The rating tests described in BS 4856-3 are for heating units with the fan located upstream of the coil

This is a revision and amalgamation of a number of former parts of the ISO 128 series

method of production

Structures for mine shafts - Headframe structures Ingestion-build-44680 electrical arc protection devices1 Scope This document specifies the design loads and the design procedures for the structural design of headframe structures of mine shafts and their components for permanent and sinking operations. The headframe includes all structures and their foundations, that are required at the head of all vertical and decline mine shafts for the purposes of supporting and installing winding and sinking ropes, conveyance guides, rope guides and rubbing ropes,