Sel SEL-487B - Page 11

Schweitzer Engineering Laboratories, Inc. SEL-487B Data Sheet
11
Figure 19 Three SEL-487B Relays Protect Both HV and LV Busbars
Bus 1
Bus 2
52
400/5
400/5
800/5 400/5 800/5
800/5
52 52 52 52
Bus 3
Bus 4
52
400/5
400/5
800/5
4000/5
1600/5
52
52
400/5
52
52
FDR_1
FDR_4
TRFR_1 TRFR_2
FDR_2
FDR_12
FDR_3
3-Phase PT
Check Zone HV
Check Zone LV
HVCTS
LVCTS
HVCTS
LVCTS
HVCTS
LVCTS
SEL-487B
SEL-487B
SEL-487B