3. Available functions
Main protection functions
IEC 61850 or
Function name
ANSI
Function description
Transformer
RET650
RET650 (A01)
2W/1CB
RET650 (A05)
3W/1CB
RET650 (A07)
OLTC
Differential protection
T2WPDIF
87T
Transformer differential protection, two winding
0–1
1
T3WPDIF
87T
Transformer differential protection, three winding
0–1
1
REFPDIF
87N
Restricted earth fault protection, low impedance
0–3
2
3
HZPDIF
87
1Ph High impedance differential protection
0–2
2
2
Impedance protection
ZMRPSB
68
Power swing detection
0–1
ZGCPDIS
21G
Underimpedance protection for generators and transformers
0–1
LEPDIS
Load encroachment
0–1
Transformer protection RET650
1MRK 504 137-BEN B
Product version: 1.3
ABB
7
Содержание ret650
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