ABB REF615 ANSI 5.0 FP1 Product Manual page 17

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Figure 6 shows a substation example with overcur-
Figure 6. Substation
example with overcur-
rent and ground-fault protection using the stan-
rent and ground-fault
dard configuration D. Additionally voltage and fre-
protection using the
standard configuration D
quency based protection is used with standard
configuration F. The relays are equipped with op-
tional arc protection function enabling fast and se-
lective arc protection throughout the switchgear.
Additionally for the feeder with overhead line the
optional autoreclosing function is used.
Δ
Y
52
REF615 Conf F
3
51P/50P
50BF
67G/51G/50G
49F
52
AFD
Cable
REF615 Conf D
51P/50P
3
50BF
51G/50G
AFD
Υ or Δ
3
3
52
Overhead
line
REF615 Conf F
51P/50P
50BF
67G/51G/50G
79
AFD
17