Selection - ABB REG670 Applications Manual

1MRK 502 071-UEN -
15.1.3.3
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
In this type of arrangement no internal voltage selection is required. The voltage
selection is made by external relays typically connected according to figure 228.
Suitable voltage and VT fuse failure supervision from the two busbars are selected
based on the position of the busbar disconnectors. This means that the connections to
the function block will be the same as for the single busbar arrangement. The voltage
selection parameter CBConfig is set to No voltage sel.
Single circuit breaker with double busbar, internal voltage selection
WA1
WA2
WA1_MCB
QB1
QB2
QA1
LINE
IEC10000095 V4 EN
Figure 229: Connection of the SESRSYN function block in a single breaker,
double busbar arrangement with internal voltage selection
When internal voltage selection is needed, the voltage transformer circuit connections
are made according to figure 229. The voltage from the busbar 1 VT is connected to
U3PBB1 and the voltage from busbar 2 is connected to U3PBB2. The voltage from the
line VT is connected to U3PLN1. The positions of the disconnectors and VT fuses
shall be connected as shown in figure 229. The voltage selection parameter CBConfig
is set to Double bus.
WA1_MCB
WA1_VT
WA2_MCB
WA2_VT
LINE_VT
WA1_VT
WA2_VT
GRP_OFF
QB1
QB1
QB2
QB2
WA1_MCB
LINE_MCB
WA2_MCB
LINE_MCB
LINE_VT
Section 15
Control
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
B1QOPEN
B1QCLD
B2QOPEN
B2QCLD
UB1OK
UB1FF
UB2OK
UB2FF
ULN1OK
ULN1FF
IEC10000095-6-en.vsd
487