ABB RELION REB500 Applications Manual

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

Contents

ABB RELION REB500 Applications Manual Manual pdf 8 page image

6.2.2.4 Parts not covered by the self-supervision function.....................................................246.2.3 Plausibility check...................................................................................................................... 246.2.4 Internal analogue measurement supervision..................................................................... 266.2.4.1 Wiring of the analogue inputs..........................................................................................266.2.4.2 Secondary injection tests..................................................................................................27Section 7 System Settings........................................................................................... 297.1 Intertripping/transfer tripping............................................................................................... 297.1.1 Busbar image............................................................................................................................ 297.2 Isolator and circuit-breaker positions................................................................................... 307.2.1 Supervising isolator and circuit-breaker statuses.............................................................317.2.2 Auxiliary contacts..................................................................................................................... 317.2.3 Evaluating the isolator and circuit-breaker statuses........................................................317.2.4 Isolator alarm............................................................................................................................ 327.2.5 Delay............................................................................................................................................327.2.6 Blocking by the isolator alarm............................................................................................... 327.2.7 Switch inhibit............................................................................................................................ 327.2.8 Acknowledging the isolator alarm........................................................................................ 337.2.9 Note on isolators and circuit-breakers................................................................................347.2.10 Response in the event of bay unit failure............................................................................ 347.3 Bay unit stand-alone mode...................................................................................................... 347.3.1 Emergency bay unit operation.............................................................................................. 357.4 Enabling the tripping command............................................................................................. 35Section 8 Busbar protection.........................................................................................378.1 Protection zones.........................................................................................................................378.2 Measuring principle....................................................................................................................378.2.1 Application example................................................................................................................ 388.2.2 Safety aspects of the measuring principle.........................................................................408.3 Restrained amplitude comparison..........................................................................................418.3.1 Amplitude comparison............................................................................................................418.3.2 Restraint current.......................................................................................................................418.3.3 Operating characteristic........................................................................................................ 438.4 Restrained amplitude comparison with CT saturation......................................................448.4.1 Application example................................................................................................................448.5 Phase comparison......................................................................................................................468.6 Case studies: busbar layouts...................................................................................................488.6.1 Busbar with just two bays......................................................................................................488.6.2 Busbar with several bays........................................................................................................488.6.2.1 Case a: CT circuit fault on Bay 1.......................................................................................488.6.2.2 Case b: CT circuit fault on Bay 2...................................................................................... 488.6.2.3 Case c: CT circuit fault on Bay 3.......................................................................................488.6.2.4 Influence of the phase comparison function................................................................498.6.2.5 Summary.............................................................................................................................. 498.6.3 Busbar fault with through current........................................................................................498.6.3.1 Case a: Through current....................................................................................................498.6.3.2 Case b: Loop current.......................................................................................................... 51Table of contents2 Distributed busbar protection REB500Application manual© Copyright 2019 ABB. 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