PROTECTION APPLICATION HANDBOOK LEC Support Programme BA THS / BU Transmission Systems and Substations BOOK No 6 Revision 0. By this, knowledge of the differential current at a fault is achieved. If, on the other hand, selectivity between the inverse time delayed over current relaysThe REB 103 bus differential is suitable for all types of bus configurations: 1, 2, 3 and 6-zones, with switching of CT secondary circuits. Full stability is View and Download ABB REB 551-C3*2.5 installation and commissioning manual online. Breaker protection and control terminal. REB 551-C3*2.5 touch terminals Double busbar-single breaker with transfer bus arrangements. restrained differential protection IED (that is, RADSS and REB 103), and use only the. 1.2 Intended audience This manual addresses the protection and control engineer In such cases the status of all busbar disconnectors and all transfer Text of INSTRUCTION MANUAL LINE DIFFERENTIAL RELAY GRL100 · PDF fileINSTRUCTION MANUAL LINE. Class 1M laser product (Transmission distance: 30km class). 6 F 2 S 0 8 5 0 INSTRUCTION MANUAL LINE DIFFERENTIAL RELAY GRL100 - 7∗∗B © TOSHIBA Corporation 2006 All Rights Reserved Ver 03 ww w E lec tric alP ar tM