ABB REF601CE446BB1 Feeder Protection

Product Overview

The ABB REF601CE446BB1 is a high-reliability feeder protection relay from the Relion® 600 family, specifically engineered for the protection, measurement, and control of medium-voltage distribution feeders. Designed for flexibility, this relay is optimized for space-constrained switchgear panels in both utility substations and industrial power systems. 

Technical Characteristics

• Manufacturer: ABB

• Series: Relion 600

• Model: REF601CE446BB1

• Installation: DIN-rail mounted

• Auxiliary Power: 110-240 V AC/DC (Universal supply)

• Current Inputs: 1 A or 5 A (Software selectable to match CT secondaries)

• System Frequency: 50 / 60 Hz compatible

• Temperature Range: -20 °C to +60 °C

• Manufacturing Location: Sweden

• Interface: Integrated HMI with LCD and status LEDs

Protection and Control Functions

The REF601CE446BB1 provides a comprehensive suite of protection elements to ensure network stability:

• Phase Protection: Non-directional overcurrent protection with both definite time and inverse time (IDMT) characteristics.

• Earth Fault: Highly sensitive earth fault protection for identifying insulation breakdowns.

• Thermal Monitoring: Thermal overload supervision to protect cables and transformers from heat-related damage.

• Voltage and Frequency: Integrated overvoltage, undervoltage, underfrequency, and overfrequency detection.

• Circuit Breaker Control: Full feeder control logic including circuit breaker position supervision and trip circuit monitoring.

• Data Logging: Sophisticated event and fault recording with precise time stamping for post-event diagnostic analysis.