Protection Relays by Range

What are Protection Relays?

Protection relays are the silent guardians of your electrical grid. They act as intelligent monitors, constantly analysing current, voltage, and other parameters. In the event of an electrical fault, like an overload or short circuit, the relay triggers a circuit breaker to isolate the problem area. This swift action minimises damage and ensures the smooth operation of your electrical network – all within milliseconds.

How Does Protection Relays Work?

Here's a look at how protection relays work:

1. Monitor: Constantly track electrical parameters (current, voltage, etc.)
2. Compare: Evaluate readings against pre-set limits for normal operation.
3. Detect Faults: Identify abnormal conditions like overloads or short circuits.
4. Trip Signal: In case of a fault, send a signal to the circuit breaker.
5. Isolate & Protect: Trigger the breaker to isolate the faulty section, minimising damage.