ABB RET670 Applications Manual page 410

Section 3
IED application
404
2ndHarmStab: Operate level of 2nd harmonic current restrain set in % of the
fundamental current. The setting range is 5 - 100% in steps of 1%. Default setting is 20%.
ANSI09000636 V1 EN
Figure 183: Directional function characteristic
1. RCA = Relay characteristic angle
2. ROA = Relay operating angle
3. Reverse
4. Forward
Settings for each step
x means step 1, 2, 3 and 4.
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1
2
2
4
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ANSI09000636-1-en.vsd
Application manual