
What is "zone protection" for a transmission line?
2025-08-12
Zone protection is a fundamental concept in power system protection where the entire electrical grid is divided into specific areas or "zones." Each zone is monitored by a dedicated set of protective relays. When a fault (e.g., a short circuit) occurs within a particular zone, the relays for that zone act quickly to isolate the faulty section by tripping the associated circuit breakers. The goal is to limit the impact of the fault to the smallest possible area, ensuring the rest of the power system remains operational. Our specialized tools for power line construction and maintenance are crucial for building and servicing the infrastructure that makes this protection possible.
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