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    protective dvicdes for coalmines wereldvanpiennl Abstract: The paper reports the development of two novel failsafe sensitive earthfault protection schemes for coal mines using restrictedneutral system of power supply Minimisation of earth leakage current for an underground coal mine's powersupply system is of great advantage in

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    protective dvicdes for coalmines Rostekhnadzor Wikipedia FNiP No 627 in English (translation) Federal norms and regulations in the field of industrial safety ''Instruction for electric power supply, selection and inspection of electrical apparatuses, cables and relay protection devices in sectional lines of coal mines with voltage up to 1200 V

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    protective dvicdes for coalmines wereldvanpiennl Abstract: The paper reports the development of two novel failsafe sensitive earthfault protection schemes for coal mines using restrictedneutral system of power supply Minimisation of earth leakage current for an underground coal mine's powersupply system is of great advantage in

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