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Description
Overview
Essential details：8237-1597 ProTech-GII is a configurable overspeed detection system
Product Description
RED670 is a line differential protection device, mainly used for the protection, monitoring and control of overhead lines and cables. It is versatile and flexible to meet the requirements of various applications.
The RED670 features split-phase differential protection technology, which is highly sensitive to high-resistance faults and provides safe phase selection for up to five line terminals. The device also has a backup distance protection function, which can be used as an optional backup protection when the communication channel is interrupted. In addition, the RED670 is equipped with current protection, which can be used to protect transformers and up to five line terminals.
Key features of the RED670 include:
Line differential protection: The split line differential protection in RED670 can reliably achieve single-phase/two-phase/three-phase trip and automatic reclosing, with synchronization and simultaneous inspection functions.
Back-up distance protection: When the communication channel is interrupted, distance protection can be used as an optional back-up protection.
Current protection: Can be used to protect transformers and up to five line terminals.
Voltage protection and frequency protection: Can be used to monitor and control the voltage and frequency of the system.
Independent of devices on the other end of the line: The RED 670’s powerful protection functions work independently of devices on the other end of the line.
Flexible protection configuration: Users can flexibly configure protection based on actual requirements.
Scalable hardware design: The RED670 has a scalable hardware design that can meet the specific requirements of users.
Clock synchronization based on Ping-Pong principle or built-in GPS: Clock synchronization based on Ping-Pong principle or built-in GPS improves system stability and reliability.
Series Compensation/Advanced features: Support for series compensation and advanced features increases system flexibility and applicability.
In short, RED670 line differential protection equipment is versatile, flexible and reliable, suitable for power systems of all sizes, and can provide efficient and stable line protection and monitoring functions.
RED670
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sunny He
[Email] sales@saulcontrol.com
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8237-1597 ProTech-GII is a configurable overspeed detection system
Backup distance protection is an important function of RED670 line differential protection equipment. When the communication channel is interrupted, distance protection can be used as an alternative backup protection. This means that when the main line protection (such as differential protection) does not work properly due to a communication failure, the back-up distance protection will continue to provide protection for the line.
Specifically, backup distance protection is based on the impedance principle and is achieved by measuring and comparing changes in line impedance. When the line fails, the impedance value will change, and when the preset threshold is exceeded, the backup distance protection will be triggered and the corresponding trip operation will be performed to cut off the faulty line.
The backup distance protection is selective, which means that it can distinguish between the faulty line and other normal lines, and only cut off the faulty line, thereby minimizing the power outage range and improving the reliability of the power supply.
In practical application, the RED670 line differential protection equipment realizes the coordination of main protection and backup protection by cooperating with the communication system. The main protection such as differential protection works first, and when it cannot work properly, the backup distance protection will be supplemented to ensure the safety of the line.
