Micom P634 - Page 527

Parameter Address
Default Min Max Unit Logic Diagram
Thermal overload
protection
THRM1: Enable PSx
081 070 082 070 083 070 084 070
0: No Fig. 3-127, (p. 3-174)
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THRM2: Enable PSx
081 090 082 090 083 090 084 090
0: No
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This setting defines the parameter subset in which thermal overload protection
is enabled.
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THRM1: Select current PSx
013 184 013 185 013 186 013 187
0: Max. phase current Fig. 3-129, (p. 3-176)
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THRM2: Select current PSx
013 188 013 189 013 190 013 191
0: Max. phase current
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Depending on this setting the thermal replica is calculated based on either the
maximum phase current, or based on the calculated residual current derived
from the sum of the phase currents (setting IN calculated), or based on the
residual current measured at the fourth transformer (setting IN measured).
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THRM1: Iref PSx
081 074 082 074 083 074 084 074
1.00 0.05 4.00 Inom Fig. 3-132, (p. 3-180)
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THRM2: Iref PSx
081 094 082 094 083 094 084 094
1.00 0.05 4.00 Inom
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Setting for the reference current.
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THRM1: Start.fact.OL_RC PSx
081 075 082 075 083 075 084 075
1.15 1.05 1.50 Fig. 3-132, (p. 3-180)
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THRM2: Start.fact.OL_RC PSx
081 095 082 095 083 095 084 095
1.15 1.05 1.50
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Starting factor k must be set in accordance with the maximum permissible
continuous thermal current of the protected object:
k=I
therm,prot.object
/I
nom,prot.object
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THRM1: Tim.const.1,>Ibl PSx
081 082 082 082 083 082 084 082
30.0 1.0 1000.0 min Fig. 3-132, (p. 3-180)
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THRM2: Tim.const.1,>Ibl PSx
081 102 082 102 083 102 084 102
30.0 1.0 1000.0 min
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Setting for the thermal time constants of the protected object with current flow
(Ibl: base line current).
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THRM1: Tim.const.2,<Ibl PSx
081 083 082 083 083 083 084 083
30.0 1.0 1000.0 min Fig. 3-132, (p. 3-180)
7 Settings P634
P634/EN M/R-42-A // P634‑311‑653 7-173