Читать книгу Practical Power Plant Engineering - Zark Bedalov - Страница 77

The LV systems will use 13.8 kV to 480 V, Δ/γ transformers. The LV (star) side will be solidly grounded with no intentional resistance. This will cause the ground fault currents to be as high as phase fault currents and can be operated by the phase current protection. In the mining industry, LV neutrals are resistance grounded as shown in Figure 2.10.