Electrical Engineering · Power System Protection
What is the primary function of a voltage differential relay in an electrical protection system?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It detects the difference in voltage between two or more points and trips the system if the differential exceeds a set threshold.✓
- 2It compares the current entering and leaving the protected zone to detect internal faults.
- 3It measures impedance across the circuit and operates when a fault is detected.
- 4It detects phase angle differences between currents and trips the system if the angle exceeds a limit.
Correct answer
It detects the difference in voltage between two or more points and trips the system if the differential exceeds a set threshold.
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