ABB REG316 4 Series Operating Instructions Manual page 276

Numerical generator protection
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ABB Switzerland Ltd
REG 316*4 1MRB520049-Uen / Rev. F
Giving due account to the available power, typical resistance
= 1000 W and R
= 150 W .
values for most applications are R
Es
Ps
Both R
and R
must be able to conduct the maximum star-
Ps
Es
point current for 10 s. The resistor R
must also be continuously
Ps
rated for the injection voltage (injected power < 100 VA).
The maximum generator star-point current is determined by the
resistors R
and R
. Using the above resistors, this current
Es
Ps
would be, for example, 5.3 A for U
= 10.5 kV or 13.5 A for
Gen
U
= 27 kV.
Gen
3-238

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