Micom P631 - Page 414

Parameter Address
Default Min Max Unit Logic Diagram
Inverse-time overcur‐
rent protection
IDMT1: Enable PSx
081 050 082 050 083 050 084 050
0: No Fig. 3-98, (p. 3-132)
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IDMT2: Enable PSx
081 170 082 170 083 170 084 170
0: No
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This setting specifies the parameter subset to be enabled for inverse-time
overcurrent protection.
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IDMT1: Block tim.st. IN PSx
081 068 082 068 083 068 084 068
0: Without
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IDMT2: Block tim.st. IN PSx
081 188 082 188 083 188 084 188
0: Without
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This setting defines whether a blocking of the residual and negative-sequence
current stages should take place for single-pole startings or multi-pole phase
current startings.
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IDMT1: Gen.starting modePSx
081 059 082 059 083 059 084 059
1: With start. IN/Ineg Fig. 3-107, (p. 3-144)
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IDMT2: Gen.starting modePSx
081 179 082 179 083 179 084 179
1: With start. IN/Ineg
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This setting defines whether starting of the residual current stages will result in
the formation of the general starting signal of IDMT protection.
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IDMT1: tGS PSx
081 058 082 058 083 058 084 058
0.00 0.00 100.00 s Fig. 3-107, (p. 3-144)
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IDMT2: tGS PSx
081 178 082 178 083 178 084 178
0.00 0.00 100.00 s
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Setting for the operate delay of the general starting signal of IDMT protection.
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IDMT1: Rush restr.enabl PSx
081 060 082 060 083 060 084 060
0: No Fig. 3-103, (p. 3-138)
Fig. 3-104, (p. 3-140)
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IDMT2: Rush restr.enabl PSx
081 180 082 180 083 180 084 180
0: No
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Setting as to whether the inrush restraint of differential protection shall be able
to block the inverse-time overcurrent protection function.
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IDMT1: Iref,P PSx
081 051 082 051 083 051 084 051
1.00 0.10 4.00 Inom Fig. 3-103, (p. 3-138)
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IDMT2: Iref,P PSx
081 171 082 171 083 171 084 171
1.00 0.10 4.00 Inom
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Setting for the reference current (phase current system).
P631
7 Settings
7-114 P631/EN M/R-11-C // P631-310-650