ABB SPAD 346 C Stabilized Differential Relay

Excellent stability performance: With high stability, it can effectively resist common interference factors in the power system, such as unbalanced current caused by external short-circuit faults, current transformer saturation, etc. Through advanced algorithms and designs, faults can still be accurately diagnosed in complex power environments, reducing the possibility of misoperation and ensuring the reliability of protection functions.

Measurement and monitoring function: In addition to protection function, it can also accurately measure electrical quantities such as current and voltage. Real time monitoring of the operating parameters of the power system, and transmission of data to the monitoring system through communication interfaces, facilitates operation and maintenance personnel to understand the system's operating status at any time, discover potential problems in a timely manner, and take measures.

Application scenarios

Power plant: Used for the protection of equipment such as generators and plant transformers in power plants. As the core equipment of power plants, the safe operation of generators is crucial. The SPAD 346 C can detect faults in the internal windings of the generator in a timely manner, such as phase to phase short circuits, turn to turn short circuits, etc., to protect the generator from damage and ensure the normal power generation and output of the power plant.

Substation: Suitable for differential protection of main transformers, distribution transformers and other equipment in substations. Substation is an important link in voltage conversion and energy distribution in the power system, and the reliable operation of transformers directly affects the stability of the entire substation. This relay can quickly respond to internal faults in transformers, ensuring the safe operation of substations and avoiding large-scale power outages caused by transformer failures.

Industrial enterprises: Used in the power supply system of large industrial enterprises, such as steel plants, chemical plants, etc., for the protection of important electrical equipment. The production process of these enterprises relies heavily on electricity support, and the failure of key equipment may lead to production interruption, causing huge economic losses. SPAD 346 C can effectively protect high-voltage motors, large rectifier equipment, etc. in industrial enterprises, ensuring the continuity and stability of industrial production.