ABB RET630 - Stabilized Differential Protection for Two-Winding Transformers Main

Table 64. Stabilized differential protection for two-winding transformers (TR2PTDF)
main settings
Parameter Function Value (Range) Step
Restraint mode TR2PTDF 2.h & 5.h & wav
Waveform
2.h & waveform
5.h & waveform
-
High operate value TR2PTDF 500...3000 % 10
Low operate value TR2PTDF 5...50 % 1
Slope section 2 TR2PTDF 10...50 % 1
End section 2 TR2PTDF 100...500 % 1
Start value 2.H TR2PTDF 7...20 % 1
Start value 5.H TR2PTDF 10...50 % 1
Winding 1 type TR2PTDF Y
YN
D
Z
ZN
-
Winding 2 type TR2PTDF Y
YN
D
Z
ZN
-
Zro A elimination TR2PTDF Not eliminated
Winding 1
Winding 2
Winding 1 and 2
-
Clock number TR2PTDF Clk Num 0
Clk Num 1
Clk Num 2
Clk Num 4
Clk Num 5
Clk Num 6
Clk Num 7
Clk Num 8
Clk Num 10
Clk Num 11
-
Transformer Protection and Control 1MRS756788 A
RET630
Product version: 1.0 Issued: 15.09.2009
44 ABB