Technical Specifications / Parameters Parameter Specification Manufacturer Model REF615E-E Product Family / Series ABB Relion® 615 Series (Feeder Protection - "E" Variant) Device Type Compact Numerical Feeder Protection Relay (Economy/Essential Version) Housing Compact case (similar in size to the "K" case, optimized for space efficiency). Key Protection Functions Core protection functions typically include: • Overcurrent Protection (50/51, 50N/51N) – Primary function for phase and earth faults. • Directional Overcurrent (67/67N) – May be available or as an option. • Sensitive Earth-Fault Protection • Thermal Overload (49) for cable protection • Breaker Failure Protection (50BF) – May be standard or optional. • Under/Overvoltage (27/59) • Auto-reclosing (79) – Often a key optional feature. Control & Monitoring Streamlined compared to full versions: • Basic programmable logic • Event recorder • Fault recorder (disturbance recorder) – May have limited duration. • Essential measurements: V, I, P, Q, PF, Frequency. Communication Protocols Focus on essential and common protocols: • IEC 61850 – Likely supported but potentially with a reduced feature set (e.g., GOOSE may be optional). • Modbus RTU (serial) – Standard for SCADA/DCS integration. • IEC 60870-5-103 – Common in many regions. • IEC 61850 MMS, DNP3, Modbus TCP may be optional. Hardware I/O (Typical) Reduced I/O count compared to REF615J/K: • Binary Inputs: ~6 (24-250V DC) • Binary Outputs (Relays): ~4-6 (Form-A contacts) • Analog Inputs: 4 current (1A/5A), voltage inputs may be optional or fixed. • Communication Ports: 1-2 serial ports (RS485), Ethernet may be optional. Human-Machine Interface (HMI) • LCD display (potentially smaller or monochrome) for status and measurements. • Front navigation keys. • Essential status LEDs. Power Supply Standard wide-range options: 24-48/60V DC or 110-240V AC/DC. Standards & Certifications IEC 60255 (core), IEC 61850 (if equipped), UL 508, CE. Mounting DIN Rail Mounting (primary) or panel mounting. Configuration Software Configured using ABB's PCM600 software (potentially with a license or feature key for advanced functions).