Description
The REF615 is a dedicated feeder relay perfectly aligned for the protection, control, measurement, and supervision of utility substations and industrial power systems. REF615 is a member of ABB’s Relion® family and a part of its 615 protection and control product series. The 615 series ANSI are characterized by their compactness and withdrawable design. Engineered from the ground up, the 615 series has been designed to unleash the full potential of the IEC 61850 standard for communication and interoperability of substation automation devices. Scope • Feeder protection for overhead lines, cable feeders, and busbar systems of distribution substations
Key benefits
• Maximized capital by keeping assets working longer with designs that require less equipment and space
• Enhanced safety by reducing hazards with safety-conscious designs
• Increased reliability by maintaining vital operations with steady, high-quality power every minute of every day
• Reduced operating costs with effective energy management and maintenance strategies
• More flexible system upgrades without rewiring or changing components
• Ease of integration with non-proprietary IEC 61850 communications
Key features
• Drawout design
• Underground, overhead cable fault detection (CFD)
• High-impedance (HIZ) fault detection
• Arc flash detection (AFD)
• Ring-lug terminals for all inputs and outputs
The REF615 provides main protection for overheadlines, cable feeders, and busbar systems of distribution substations. It can be applied for protection andcontrol of grounded and ungrounded distribution systems. Flexible order coding allows for choosing current-only or current-and-voltage configurations tobest fit your distribution feeder application needs. The REF615 is the most powerful, advanced and simplest feeder protection relay in its class, perfectly offering time and instantaneous overcurrent, negativesequence overcurrent, phase discontinuity, breakerfailure, thermal overload, and voltage metering andprotection. The relay also features optional high impedance fault (HIZ) protection for grounded and ungrounded distribution systems. Also, the relay incorporates a flexible three-phase multi-shot auto-reclosefunction for automatic feeder restoration in temporary faults on overhead lines. Enhanced with safety options, the relay offers athree-channel arc-fault detection system for supervision of the switchgear. The REF615 also integrates basic control functionality,which facilitates the control of one circuit breaker viathe relay’s front panel human machine interface (HMI)or remote control system. To protect the relay fromunauthorized access and to maintain the integrity ofinformation, the relay has been provided with a fourlevel, role-based user authentication system, with individual passwords for the viewer, operator, engineer,and administrator levels. The access control systemapplies to the front panel HMI, embedded webbrowser based HMI, and the PCM600 relay setting andconfiguration tool.
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