Breaker-And-A-Half - ABB Relion 670 Series Applications Manual

1MRK 511 358-UUS A
13.1.3.5

Breaker-and-a-half

Figure 109
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 109.
Application manual
describes a breaker-and-a-half arrangement with three SESRSYN functions in the same
Section 13
Control
M12330-3 v8
263