Description
ABB REJ601 BD446NN1XG is a feeder protection relay that belongs to ABB’s feeder protection family (REF601 series). Here is a detailed description of the product:
ABB REJ601 BD446NN1XG Product description
ABB REJ601 BD446NN1XG is a high performance feeder protection relay primarily used for feeder protection and control in power systems. By monitoring electrical parameters such as current and voltage, it provides a variety of protection functions, including overcurrent protection, ground fault protection, interphase short-circuit protection, load imbalance protection and excitation inrush current suppression.
Product parameter
Rated voltage: 24V AC/DC.
Communication protocol: Support Modbus RTU and IEC 60870-5-103.
Interface type: Supports communication interfaces such as RS485 and Ethernet.
Operating temperature range: -20°C to +70°C.
Protection level: IP20.
Size: 120mm x 80mm x 20mm.
Product specification
Model: REJ601 BD446NN1XG.
Series: REF601 series.
Features:
Overcurrent protection: Monitors the line current and sends an alarm or tripping signal when the current exceeds the set value.
Ground fault protection: Detect the ground fault and cut off the circuit in time.
Interphase short-circuit protection: quickly remove interphase short-circuit faults.
Load imbalance protection: monitoring three-phase load imbalance.
Excitation inrush current suppression: to prevent the misoperation caused by transformer excitation inrush current.
Series and features
ABB REJ601 belongs to the Feeder Protection Relay family (REF601), which has the following features:
High reliability: Use of advanced digital technology to ensure long-term stable operation.
Flexible configuration: Supports software configuration to adapt to different application scenarios.
Compact design: Small size for easy installation and maintenance.
Versatility: protection, monitoring and control functions in one.
Function and use
The main role of ABB REJ601 BD446NN1XG is to provide comprehensive protection for feeders in the power system, ensuring the safe and stable operation of the power system. Specific uses include:
Overload protection: prevents device damage caused by line overload.
Short circuit protection: quickly cut off the short circuit to avoid the expansion of the accident.
Ground fault protection: detects and isolates ground faults.
Load imbalance protection: prevent equipment overheating caused by three-phase load imbalance.
Excitation inrush current suppression: to avoid misoperation caused by transformer excitation inrush current.
Application field
ABB REJ601 BD446NN1XG is widely used in the following areas:
Industrial power systems: for the protection and control of power distribution networks in factories.
Public utility system: applicable to urban power grids and public distribution networks.
Power plants and substations: Feeder protection for generation and transmission systems.
