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High-Resistance Grounding: 5 A NGR, Neutral CT and Ground-Fault Alarm

A 480 V high-resistance grounded system on a 34.5 kV delta to 480 V wye transformer, with a 55.4 Ω neutral grounding resistor limiting a ground fault to 5 A (277 ÷ 55.4), a neutral CT, a monitoring relay, alarm light and SCADA signals.

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