ABB Relion REB500 Product Manual

Also see for Relion REB500: Technical manual Applications manual Communication protocol manual Technical manual Product guide

Contents

ABB Relion REB500 Product Manual Manual pdf 4 page image

Distributed busbar protection REB500 1MRK 505 352-BENProduct version: 8.2 Issued: 2016-03-01Revision: -4 ABB1. ApplicationREB500The numerical busbar protection REB500 is designed forthe high-speed (sub-cycle), selective protection of MV, HVand EHV busbar installations at a nominal frequency of50, 60 HzThe modular system structure is enabling the protection tobe easily configured to suit the layout of the primarysystem.The flexibility of the system enables all configurations ofbusbars from single to quadruple, with transfer buses orring busbars and 1½ breaker schemes to be protected.In 1½ breaker schemes the busbars and entire diameters,including Stub/T-Zone can be protected. An integratedtripping scheme allows saving external logics as well aswiring.The system is scalable for up to 60 feeders (bay units)and a total of 32 busbar zones.The numerical busbar protection REB500 detects allphase and earth faults in solidly grounded and resistive-grounded power systems and phase faults in ungroundedsystems and systems with Petersen coils.The main CTs supplying the currents to the busbarprotection have to fulfill only modest performancerequirements (see page 17). The protection operatesdiscriminatively for all faults inside the zone of protectionand remains reliably stable for all faults outside the zoneof protection.REB500 bay protection (optional)The system provides an option to extend the functionalscope of REB500 by a set of predefined bay protectionfunctions used as main 2 or back-up line protection.Version ‘Line variant L-V2’ includes distance, directional/non directional overcurrent and directional earthfaultprotection functions (see Table 2).As regards the level of voltages and frequencies busbarand station protection have the same application area.For details on application and technical data refer to theREB500 Application Manual for bay protection functions.Typical substation layoutsFigure 1. Single busbarFigure 2. Double busbar