Stabilized and instantaneous differential protection for two-winding transformers (TR2PTDF) main settings - Arc protection - Merging unit - Transformer protection - 2 winding - Product Guide - RET615 Transformer Protection and Control - Relion 615 series - 5.0 FP1 IEC - IEC - 24.05.2023

RET615 Product Guide
Table 1. Stabilized and instantaneous differential protection for two-winding transformers (TR2PTDF) main settings
Parameter Function Value (Range) Step
High operate value TR2PTDF 500...3000 %I r 10
Low operate value TR2PTDF 5...50 %I r 1
Slope section 2 TR2PTDF 10...50% 1
End section 2 TR2PTDF 100...500 %I r 1
Restraint mode TR2PTDF

5 = Waveform

6 = 2.h + waveform

8 = 5.h + waveform

9 = 2.h + 5.h + wav

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Start value 2.H TR2PTDF 7...20% 1
Start value 5.H TR2PTDF 10...50% 1
Operation TR2PTDF

1 = on

5 = off

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Winding 1 type TR2PTDF

1 = Y

2 = YN

3 = D

4 = Z

5 = ZN

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Winding 2 type TR2PTDF

1 = y

2 = yn

3 = d

4 = z

5 = zn

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Zro A elimination TR2PTDF

1 = Not eliminated

2 = Winding 1

3 = Winding 2

4 = Winding 1 and 2

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