Identification; Functionality - ABB RET650 Technical Manual

Section 12
Control
12.2.8.1
12.2.8.2
322

Identification

Function description
Interlocking for transformer bay

Functionality

The interlocking for transformer bay (AB_TRAFO) function is used for a transformer
bay connected to a double busbar arrangement according to figure 145. The function
is used when there is no disconnector between circuit breaker and transformer.
Otherwise, the interlocking for line bay (ABC_LINE) function can be used. This
function can also be used in single busbar arrangements.
QB1 QB2
QC1
QA1
QC2
T
QC3
QA2
QC4
QB3 QB4
IEC04000515 V1 EN
Figure 145: Switchyard layout AB_TRAFO
IEC 61850
identification
AB_TRAFO
WA1 (A)
WA2 (B)
AB_TRAFO
QA2 and QC4 are not
used in this interlocking
en04000515.vsd
1MRK 504 135-UEN A
IEC 60617 ANSI/IEEE C37.2
identification device number
- 3
Technical manual