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AS NZS 4871.2:2002 pdf free.Electrical equipment for coal mines, for use underground Part 2: Distribution, control and auxiliary equipment. 2.1 GENERAL This Part specifies additional requirements to those in AS/NZS 4871.1 for explosion- protected distribution, control and auxiliary equipment. 2.2 ELECTRICAL EQUIPMENT Electrical equipment intended for use underground shall be of robust construction and shall be designed to facilitate inspection...

AS NZS 4871.3:2002 pdf free download.Electrical equipment for coal mines, for use underground Part 3: Substations. 2.1 GENERAL REQUIREMENTS Substations shall he of rugged construction and shall he capable of withstanding the arduous conditions of handling to which they may be subjected. They shall comply with the following requirements: (a) Each sub-assembly of the substation shall he securely fixed to...

AS NZS 4871.1:2002 pdf free.Electrical equipment for coal mines, for use underground Part 1: General requirements. 1.5.24 Earth-fault protection Protection against faults between conductors and earth. 1.5.25 Electrical e(lulprnent All items applied as a whole or in part for the utilization of electrical energy, such as items for the generation, transmission, distribution, storage, measurement, regulation, conversion. and consumption of electrical...

AS NZS 4871.5:2002 pdf free download.Electrical equipment for coal mines, for use underground Part 5: Battery powered electrical mobile machines. 2.3.7 Creepage distances The creepage distance between the poles of adjacent cells and between these poles and any non-insulated portion of the battery container shall be at least 35 mm. Where nominal voltages between adjacent cells of the battery exceed...