Which consequence results when ground impedance is high in substation delta-wye transformer systems?

💡 Explanation

High ground impedance limits fault current, because of Ohm's law; consequently, the neutral-to-ground voltage rises rather than remaining near zero during unbalanced loads, therefore protection equipment may malfunction. A lower impedance offers a path for better fault current flow,

• Which outcome occurs when a grinding wheel's rotational speed excessively increases during CNC machining?
• Which outcome occurs when magnetic saturation limits current transformer accuracy?
• Which risk increases when an axial piston pump experiences significant internal leakage across its pistons?
• Which consequence results when turbulent airflow disrupts the boundary layer during aircraft flight?
• Which outcome results when exceeding accumulator precharge limits in hydrostatic transmissions?
• Which risk increases when concrete's carbonation depth reaches reinforcing rebar within structure?