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What is the purpose of a differential relay in protection systems?
Practice Questions
Q1
What is the purpose of a differential relay in protection systems?
To detect phase imbalance
To measure voltage levels
To compare currents in two circuits
To provide backup protection
Questions & Step-by-Step Solutions
What is the purpose of a differential relay in protection systems?
Steps
Concepts
Step 1: Understand that a differential relay is a device used in electrical systems.
Step 2: Know that it monitors the current flowing into a specific area, called a protected zone.
Step 3: Recognize that it also monitors the current flowing out of that same area.
Step 4: Compare the incoming and outgoing currents. Under normal conditions, these currents should be equal.
Step 5: If the incoming current is different from the outgoing current, it indicates a problem, like a fault.
Step 6: The differential relay then triggers an alarm or disconnects the system to prevent damage.
No concepts available.
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