Line Differential Protection and Control RED615

RED615 is a phase-segregated two-end line differential protection and control IED perfectly harmonized for utility and industrial power systems, including looped and meshed distribution networks with or without decentralized power generation. RED615 is a member of ABB’s Relion® product family and a part of its 615 protection and control product series. The 615 series IEDs are characterized by their compactness and withdrawable design. Re-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 equipment.

RED615 provides phase-segregated high speed, longitudinal differential protection for overhead line and cable feeders in distribution networks. Two RED615s interconnected over a communication link form an absolutely selective unit protection scheme. Protection of ring-type and meshed distribution networks generally requires unit protection solutions, also applied in radial networks containing distributed power generation.

Three standard RED615 configurations are available, a pure line-differential protection configuration with overcurrent backup protection and two extended configurations with additional protection functions including directional and non-directional earth-fault protection. Due to the standard configurations of RED615 for the line differential protection, the IED can be rapidly set up and commissioned, once it has been given the application-specific settings.