Comprehensive Protection: The REF620E_F NBFNAANNNCC1BNN1XF provides a wide range of protection functions, including overcurrent protection, earth fault protection, and breaker failure protection, which can effectively protect the safety and stability of the power grid.
High Communication Capability: It supports multiple communication protocols such as IEC 61850 and DNP 3, enabling seamless connection and data exchange with other devices in the substation, and improving the intelligence and informatization level of the substation.
Flexible Configuration: With flexible order coding, it allows users to choose configurations according to their specific distribution feeder application needs.
User-friendly Design: It is equipped with a large, easy-to-read LCD screen and programmable push-buttons, which is convenient for users to operate and set.
The REF620E_F NBFNAANNNCC1BNN1XF is an IEC feeder protection and measurement and control device of ABB. It is designed to protect, control, measure and monitor public and industrial power grids. The device is suitable for grounded and ungrounded distribution systems, offering support for single breaker, 1.5 breaker and double breaker feeder configurations. It can be used for the protection of overhead lines, cable feeders and busbar systems in distribution substations.
2. Product Parameters
Setting Groups: 6
Output Speed: High-speed (<1ms)
Fault Detection: Underground and overhead cable fault detection (CFD), high impedance (HIZ) fault detection, arc flash detection (AFD)
Communication Protocols: Supports IEC 61850, DNP 3, IEC 60870-5-103 and Modbus®
Terminal Type: Ring-lug terminals for all inputs and outputs
Display: Large, easy-to-read LCD screen
3. Advantages and Features
Comprehensive Protection: The REF620E_F NBFNAANNNCC1BNN1XF provides a wide range of protection functions, including overcurrent protection, earth fault protection, and breaker failure protection, which can effectively protect the safety and stability of the power grid.
High Communication Capability: It supports multiple communication protocols such as IEC 61850 and DNP 3, enabling seamless connection and data exchange with other devices in the substation, and improving the intelligence and informatization level of the substation.
Flexible Configuration: With flexible order coding, it allows users to choose configurations according to their specific distribution feeder application needs.
User-friendly Design: It is equipped with a large, easy-to-read LCD screen and programmable push-buttons, which is convenient for users to operate and set.
4. Application Areas and Application Cases
Application Areas: It is widely used in power grid protection and control scenarios in power, manufacturing, petrochemical and other industries, such as the protection and control of overhead lines, cable feeders and busbar systems in distribution substations.
Application Case: In a power plant’s distribution substation, the REF620E_F NBFNAANNNCC1BNN1XF is used to protect and control the cable feeders. It can quickly detect faults such as overcurrent and earth faults in the cable feeders, and send out trip signals in time to isolate the faulty sections, effectively ensuring the safe operation of the power distribution system and reducing the impact of faults on the power plant’s production.
5. Competition Comparison
Compared with some similar products in the market, the REF620E_F NBFNAANNNCC1BNN1XF has more comprehensive protection functions. Some competitors’ products may lack some advanced fault detection functions such as arc flash detection and high impedance fault detection. In terms of communication, the REF620E_F NBFNAANNNCC1BNN1XF supports a variety of mainstream communication protocols, which is more conducive to system integration and expansion, while some similar products may have limitations in communication protocol support.
6. Selection Suggestions
Compatibility: Consider whether the device is compatible with the existing power grid system and communication protocols to ensure seamless integration with the substation’s equipment and systems.
Function Requirements: According to the specific protection and control requirements of the power grid, such as the need for specific fault detection functions and protection settings, select a device with appropriate functions. If the power grid has high requirements for power quality monitoring and protection against various faults, the REF620E_F NBFNAANNNCC1BNN1XF is a good choice.
Installation Environment: Take into account the installation environment of the device, such as temperature, humidity and dust level. Although the REF620E_F NBFNAANNNCC1BNN1XF has good adaptability, it is still necessary to ensure that the installation environment meets the device’s operating requirements to avoid affecting its performance.
Budget: Consider your project budget, but also balance the overall performance and quality of the product. The REF620E_F NBFNAANNNCC1BNN1XF offers high cost performance, providing reliable protection and control functions at a reasonable price.
7. Precautions
Installation: When installing the device, make sure to follow the installation instructions provided by the manufacturer to ensure correct installation and wiring. Pay attention to the connection of terminals to avoid loose connections.
Configuration: Before using the device, it is necessary to configure the protection settings and communication parameters correctly according to the actual power grid situation. Incorrect configuration may lead to incorrect operation of the device or failure to achieve the expected protection effect.
Maintenance: Regularly check the operation status of the device, including the display screen, communication status and protection action records. Clean the device regularly to keep it free of dust and dirt. In case of any abnormal situation, contact the manufacturer’s technical support in time for troubleshooting.
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