SE-325NT

SE-325NT (fast overcurrent and short-circuit Protection Relay) combines overcurrent and short-circuit functions in one unit, providing complete protection to ring networks, radial networks, and generator reverse power applications. The SE-325NT protection relay can detect dangerous levels of overcurrent and short-circuit fault current and provides electronic trip of the circuit breaker within a specified time delay. It is suitable for use in a wide range of industries, including power plants, substations, and industrial or commercial facilities.

Overview

The SE-325NT protection relay uses an advanced microcontroller-based design that provides high-speed analysis and speed of operation. The protection relay provides overcurrent and short-circuit protection over a system from 0.5A to 3000A. It has one set of adjustable current and voltage pick-up settings, which can also be programmed. It has a built-in timer that can be used for overcurrent time-delay protection, as well as a relay output that is activated when a fault is detected.

Application Field

The SE-325NT protection relay can be used to protect motors, generators, transformers, capacitor banks and other equipment from overloads, short-circuits and ground faults. The protection relay can be used in a wide range of industries, including power plants, substations, and industrial or commercial facilities. The relay is often used in applications such as ring networks, radial networks, and generator reverse power applications.

Working Principle

The SE-325NT protection relay works by detecting dangerous levels of overcurrent and short-circuit fault current and providing electronic trip of the circuit breaker within a specified time delay. The protection relay is designed to detect overcurrent or short-circuit faults, providing fast and precise protection of the system. When overcurrent or short-circuit fault current is detected, the protection relay will detect it through its integrated current and voltage pick-ups, and determine if a trip is necessary. The protection relay will then calculate the time delay according to the current and voltage settings and will trip the circuit breaker at the end of the time delay, protecting the system from further damage.

Conclusion

The SE-325NT fast overcurrent and short-circuit protection relay combines overcurrent and short-circuit functions in one unit, providing complete protection to ring networks, radial networks, and generator reverse power applications. The advanced microcontroller-based design provides fast and precise protection of the system when overcurrent or short-circuit fault current is detected. The protection relay is suitable for use in a wide range of industries, including power plants, substations, and industrial or commercial facilities.