ABB Relion 670 Series Applications Manual page 289

1MRK 511 401-UUS F
14.1.3.5 Breaker-and-a-half
Figure 117
IED, each of them handling voltage selection for WA1_QA1, TIE_QA1 and WA2_QA1 breakers
respectively. The voltage from busbar 1 VT is connected to V3PB1 on all three function blocks and
the voltage from busbar 2 VT is connected to V3PB2 on all three function blocks. The voltage from
line1 VT is connected to V3PL1 on all three function blocks and the voltage from line2 VT is
connected to V3PL2 on all three function blocks. The positions of the disconnectors and VT fuses
shall be connected as shown in Figure 117.
Bay control REC670
Application manual
describes a breaker-and-a-half arrangement with three SESRSYN functions in the same
© Copyright 2017 ABB. All rights reserved
Section 14
Control
M12330-3 v8
283