ABB REQ650 Protection Relay

Overview

The REQ650 is a specialized protection relay from ABB’s Relion 650 series, specifically engineered for circuit breaker-related applications. It acts as a mechanical necessity for safeguarding power systems by providing a "ready-to-use" solution that balances comprehensive protection with ease of integration. 

Technical Specifications

• Manufacturer: ABB

• Model Designation: REQ650

• Product Series: Relion 650

• Input Voltage: 110 / 220 / 240 V AC/DC

• Input Current: 1 / 5 A AC/DC

• Output Contacts: 2 x NO (Normally Open), 2 x NC (Normally Closed)

• Communication Protocols: IEC 61850, Modbus, Ethernet

• Dimensions: 120 x 120 x 100 mm

• Weight: 0.5 kg

• Design: Compact and rugged for harsh environments

• Configuration: Preconfigured for rapid deployment

Key Functional Characteristics

Comprehensive Circuit Breaker Protection

The REQ650 provides a robust suite of protection algorithms tailored to circuit breaker performance. It monitors for overcurrent and earth fault conditions to prevent thermal damage and equipment failure. Additionally, its differential protection capabilities allow for high-sensitivity fault detection within a specific zone, ensuring that the relay only trips when necessary, thereby maintaining system stability and preventing unnecessary downtime.

Ready-to-Use Deployment

One of the primary benefits of the REQ650 is its preconfigured status. It arrives from the factory with essential parameters already set, which significantly reduces the engineering time required for commissioning. This makes it an ideal solution for standard applications where a reliable, "out-of-the-box" protection scheme is needed without the complexity of deep-level logic programming.

Seamless Communication and Integration

Equipped with support for IEC 61850, Modbus, and standard Ethernet, the REQ650 integrates easily into modern substation automation systems. It facilitates high-speed data exchange and remote monitoring, allowing operators to receive real-time status updates and event logs. This connectivity is vital for predictive maintenance and rapid diagnostic analysis following a system trip.