ABB Relion 670 Series Product Manual page 6

Busbar protection REB670
Customized
Product version: 1.2
QB1 QB2 QB1 QB2
BI1
QA1 QA1
QA1
BI1 BI1
IEC11000239 V1 EN
Figure 5. Example of double bus-single breaker station
ZA
ZB
QB1 QB2 QB7 QB1 QB2
QA1 QA1
BI1
BI1
IEC06000015 V1 EN
Figure 6. Example of double bus-single breaker station with transfer bus
ZA1
ZB1
QB1 QB2 QB1 QB2
BI1
QA1 QA1
QA1
BI1 BI1
IEC06000016 V1 EN
Figure 7. Example of double bus-single breaker station with two bus-section and two bus-coupler breakers
6
QB1 QB2 QB1 QB2 QB1 QB2
QA1 QA1 QA1
BI1 BI1 BI1
QB7 QB1 QB2 QB7 QB20
QA1
BI1
QB1 QB2 QB1 QB2 QB1 QB2
QA1 QA1 QA1
BI1 BI1 BI1
ZA
ZB
QB1 QB2
QA1
BI1
IEC11000239-1-en.vsd
QB1 QB2 QB7 QB1 QB2
QA1 QA1
BI1
BI1
QA1
BI1
QB1 QB2 QB1 QB2
BI1
QA1
QA1 QA1
BI1 BI1
1MRK505273-BEN D
QB7
xx06000015.vsd
ZA2
ZB2
QB1 QB2 QB1 QB2
QA1 QA1
BI1 BI1
BI1
QA1
xx06000016.vsd
ABB