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SF6 Gas Evacuation Refill Unit (ERFU 2) A lightweight, yet rugged, portable unit for the evacuation of gas switchgear and breaker compartments and regulated filling using standard SF6 gas cylinders. Download Product Information Here: ERFU 2 2017.
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The voltage to apply depends on atmospheric conditions, compared to the standard reference atmosphere. U = Uo • Kt (0.95 ≤ Kt ≤ 1.05) Example: b to = 22&C U is the voltage to be applied during a test on external conditions b bo = 99.5 kPa (995 mbar) b ho = 8 g/m3 then Kt = 0.95.
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