Functionality - ABB RET650 Technical Manual

Section 12
Control
12.2.5.2
290

Functionality

The interlocking for 1 1/2 breaker diameter (BH_CONN, BH_LINE_A,
BH_LINE_B) functions are used for lines connected to a 1 1/2 breaker diameter
according to figure 135.
QB1
QA1
QB6
BH_LINE_A
QB9
IEC04000513 V1 EN
Figure 135: Switchyard layout 1 1/2 breaker
Three types of interlocking modules per diameter are defined. BH_LINE_A and
BH_LINE_B are the connections from a line to a busbar. BH_CONN is the
connection between the two lines of the diameter in the 1 1/2 breaker switchyard
layout.
QC1
QC2
QC3
QA1
QB61
QB62
QC1 QC2
QC9
BH_CONN
1MRK 504 135-UEN A
WA1 (A)
WA2 (B)
QB2
QC1
QA1
QC2
QB6
QC3
BH_LINE_B
QB9
QC9
en04000513.vsd
Technical manual