ABB REF620 NBFNAANNNAA1BNN1XF is a feeder protection measurement and control device in the ABB Relion 620 series. It is specifically designed for feeder protection in medium and low voltage power grids and features comprehensive protection, control, measurement and communication functions. Here is a detailed introduction about this device:
I. Core Functions
Protection Function:
Provides comprehensive feeder protection, including overcurrent protection, short-circuit protection, grounding fault protection, etc.
Supports various protection methods, such as time-limited overcurrent protection, inverse-time overcurrent protection, directional overcurrent protection, etc., to adapt to different application scenarios.
Has high sensitivity, capable of quickly detecting and responding to faults, ensuring the safe and stable operation of the power system.
Control Function:
Supports remote control of switch operations, enabling remote control and automated management.
Provides programmable logic functionality, allowing users to customize control logic according to actual needs.
Measurement Function:
Can measure real-time parameters such as current and voltage on the feeder, providing accurate data support for power system monitoring and management.
Supports high-precision energy metering to meet users’ precise measurement requirements of energy consumption.
Communication Function:
Supports multiple communication protocols, such as IEC 61850, DNP3, Modbus, etc., ensuring seamless integration with different systems and devices.
Provides flexible communication interface options, including Ethernet, RS485, optical fiber, etc., to meet communication needs in different application scenarios.
Technical Features
Integrated Design: All protection, control, measurement and communication functions are integrated into a compact device, saving space and simplifying the system architecture.
High Reliability: Advanced microprocessor technology and redundant design are adopted to ensure stable operation of the device even in harsh environments.
User-Friendliness: A large-screen LCD display and intuitive operation interface are provided, facilitating users to view information, operate and debug.
Flexible Configuration: Through ABB’s dedicated PCM600 engineering tool software, users can easily perform graphical logic programming and parameter configuration, achieving complex protection interlocks, locks and custom control logic.
Application scenarios:
Industrial power distribution: Widely used in medium-voltage feeder protection in industries such as steel, chemical, and papermaking, ensuring continuous power supply for production equipment and safe production.
New energy integration: Applicable to collection lines of new energy power stations such as photovoltaic and wind farms, supporting low voltage ride-through (LVRT) function, ensuring stable integration and efficient utilization of new energy power generation.
Smart grid: As a protection and control unit for distributed energy access points, supporting demand response and energy management, promoting the construction and development of smart grids.
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