what is overload relay

Overload Relay in Electrical Power Systems
An overload relay is a protective device that detects excessive current in an electrical circuit and trips or disconnects the circuit to prevent damage.


Key Functions

1. Overload protection- Protects electrical equipment from damage due to excessive current.
2. Current monitoring- Monitors current levels in the circuit.
3. Trip signal-Sends a trip signal to disconnect the circuit in case of overload.

Applications 

1. Motor protection- Protects motors from overload and overheating.
2. Power distribution- Used in power distribution systems to protect equipment.
3. Industrial control- Used in industrial control systems to protect machinery.

Benefits

1. Equipment protection- Prevents damage to electrical equipment.
2. Reduced downtime- Minimizes downtime by detecting faults early.
3. Improved safety- Enhances safety by preventing electrical fires and accidents.

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