ABB RELION REB500 Technical Manual

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ABB RELION REB500 Technical Manual Manual pdf 17 page image

Section 3 Signals3.1 Signal designations3.1.1 Bay/Station protection — function overlapping signal3.1.1.1 Signal designations GUID-473B447A-C76B-4A92-923D-D0987D089E87 v1The BP/SP function overlapping (general) signals correspond to the signal numbersnomenclature of the station protection system (for details, seeREB500 Technical Manual).For example, 19205_Block BP (5 digit signal number)3.1.1.2 Outputs generated by BP and used as SP inputs (default signals)GUID-9B46ED80-5132-49AE-BD97-776AD0CFFAB8 v1Table 1: BU_ BP outputs to SP inputs (default signals)Parameter Description11120_BP External TRIP This is the tripping signal generated by bay protection of REB500. It trips faultson a line with the aid of the REB500 tripping contact. Tripping thus takesaccount of the busbar configuration at the time. The signal is activated by thebay protection directly and does not therefore appear as binary input signal.11125_BP External TRIP BBzoneThis is a tripping signal generated by the bay protection of REB500 which isused to trip the entire bus zone to which the bay is connected. The trippingcommand is applied to all the bay units of the bus zone and sections of busbarsinterconnected by an isolator (intertripping).13210_BP Block BFP This signal is directly activated by the bay protection and doesn’t thereforeappear as a binary input signal. The operation of the breaker failure protectionof the corresponding feeder is blocked. When the blocking signal is cancelledand providing a starting signal is present and current is flowing, the timers startagain at t = 0.13610_BP Trip transfer Reserved for the special application “trip transfer”.This signal is directly activated by the bay protection unit and does nottherefore appear as a binary input signal.13761_BP Start BFP L1L2L3_5 This signal is functionally identical to signal 13760_Start BFP L1L2L3_5, but it isdirectly activated by the bay protection and does not therefore appear as abinary input signal.13770..13780_BP Start BFP Lp Breaker failure protection with phase-selective starting (p = 1, 2 or 3). Thebreaker failure protection timer starts when this signal is activated by BPfunctions and the BFP measures a current in the corresponding phase. Thissignal is directly activated by the bay protection and does not therefore appearas a binary input signal.13785_BP Start BFP L1L2L3 Breaker failure protection with three-phase starting. The breaker failureprotection timer starts when this signal is activated and the BFP measures acurrent in any phase.This signal is directly activated by the bay protection and does not thereforeappear as a binary input signal.13790_BP External start BFP Breaker failure protection with three-phase starting. The breaker failureprotection timer starts when this signal is activated regardless of the currentmeasurement.This signal is directly activated by the bay protection and does not thereforeappear as a binary input signal.Table continues on next page1MRK 505 406-UEN B Section 3SignalsBay protection functions REB500 11Technical manual© Copyright 2019 ABB. All rights reserved