Description
REL650 is a relay protection device produced by ABB Group, mainly used for the protection and control of power systems.
1、 Product Overview
REL650 belongs to Relion ® The 650 series products provide comprehensive solutions for the protection, monitoring, and control of power systems. The REL650 device has high reliability and flexibility, and can meet the protection needs of different grounding systems and transmission lines.
2、 Main features
Comprehensive protection function:
Equipped with a full scheme distance protection function with independent phase selection, it can be applied to various overhead lines and cables in different grounding systems.
Having zero sequence overcurrent protection function, it can detect and cut off high resistance grounding faults, which is particularly important in secondary transmission networks.
Provides backup protection functions such as thermal overload protection and circuit breaker failure protection to ensure the stable operation of the power system.
Flexible configuration and scalability:
The REL650 device offers two solutions: a user-defined version and a pre configured version. The pre configured version has complete functions and is suitable for various application scenarios, such as single or multiple circuit breaker wiring, single-phase tripping or three-phase tripping, etc. Users can also modify their configuration as needed to meet specific system requirements.
The device hardware is flexible and scalable, capable of meeting specific needs.
High reliability and stability:
The REL650 device adopts advanced technology and algorithms to ensure high reliability. Its distance protection has anti load impedance intrusion function, which can improve the sensitivity of detecting high impedance faults in heavy-duty lines.
The built-in system oscillation detection function can avoid protection misoperation when parallel lines or heavy loads are cut off or large generators trip, causing power system oscillation.
Easy to maintain and operate:
The REL650 device has a user-friendly interface and rich status indication functions, making maintenance and operation simple and fast.
The device also provides fault recording and event recording functions, providing users with fault analysis and relevant valuable data after the device is activated.
3、 Application Fields
REL650 relay protection device is widely used for the protection and control of power equipment such as transmission lines and transformers at all levels of the power system. Especially in secondary transmission networks, REL650 devices have become an ideal choice for protecting power lines and cables due to their high reliability and flexibility.
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