ABB REG650 Technical Manual page 98
Generator protection
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Also See for REG650:
- Technical manual (728 pages) ,
- Commissioning manual (144 pages) ,
- Product manual (73 pages)
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Section 5
Differential protection
92
BLKUNRES
a
IdUnre
b
IDL1MAG
IBIAS
BLOCK
BLKRES
IDL1
2nd
Harmonic
Wave
block
5th
Harmonic
Cross Block
from L2 or L3
OpCrossBlock=On
IEC06000545 V1 EN
Figure 39:
Transformer differential protection simplified logic diagram for
Phase L1
IEC05000167-TIFF V1 EN
Figure 40:
Transformer differential protection simplified logic diagram for
external/internal fault discriminator
b>a
AND
OR
AND
1MRK 502 034-UEN -
TRIPUNREL1
AND
TRIPRESL1
AND
1
Cross Block
to L2 or L3
AND
OR
en06000545.vsd
Technical Manual
STL1
BLK2HL1
BLKWAVL1
BLK5HL1
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