ABB RET670 - Page 251

Table 34: Voltage selection logic
SESRSYN CBConfig
setting
Section to
be
synchroniz
ed
Activated
B1QCLD
input on
IED from
Activated
B2QCLD
input on
IED from
Activated
LN1QCLD
input on
IED from
Activated
LN2QCLD
input on
IED from
Indication
from
SESRSYN
on IED
SESRSYN 1
(Operates on
CB1 52)
breaker-
and-a-half
bus CB
Bus1 –
Line1
LN1 989 B1SEL,
LN1SEL
Bus1 –
Line2
CB2 252 LN2 989 B1SEL,
LN2SEL
Bus1 –
Bus2
CB2 252 CB3 352 B1SEL,
B2SEL
SESRSYN 2
(Operates on
CB2 252)
Tie CB
Line1 –
Line2
LN1 989 LN2 989 LN1SEL,
LN2SEL
Bus1 –
Line2
CB1 52 LN2 989 B1SEL,
LN2SEL
Bus2 –
Line1
CB3 352 LN1 989 B2SEL,
LN1SEL
Bus1 –
Bus2
CB1 52 CB3 352 B1SEL,
B2SEL
SESRSYN 3
(Operates on
CB3 352)
breaker-
and-a-half
bus alt.
CB
(mirrored)
Bus2 –
Line2
LN2 989 B2SEL,
LN2SEL
Bus2 –
Line1
CB2 252 LN1 989 B2SEL,
LN1SEL
Bus2 –
Bus1
CB2 252 CB1 52 B1SEL,
B2SEL
1MRK 504 165-UUS - Section 11
Testing functionality by secondary injection
Transformer protection RET670 2.2 ANSI 245
Commissioning manual