Physics · Power System Protection
An earthing grid designed for an electrical substation primarily controls:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1System operating voltage and load current
- 2Step potential and touch potential for human safety✓
- 3Lightning surge potential only
- 4Phase-to-neutral voltage unbalance
Correct answer
Step potential and touch potential for human safety
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