Generator Differential - ABB REG316 4 Series Operating Instructions Manual

REG 316*4 1MRB520049-Uen / Rev. F
3.5.2. Generator differential (Diff-Gen)
A. Application
Differential protection of generators.
B. Features
non-linear current-dependent tripping characteristic
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(see Fig. 3.5.2.1)
high stability during through-faults and c.t. saturation
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short operating times
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three-phase measurement
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optimised for the differential protection of generators, i.e.
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suppression of DC off-set
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suppression of harmonics.
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C. Inputs and outputs
I. Analogue inputs:
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II. Binary inputs:
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III. Binary outputs:
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IV. Measurements:
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no inrush restraint
no compensation of group of connection
only two measuring inputs
current (2 sets of 3 inputs)
blocking
tripping
R phase trip
S phase trip
T phase trip
R phase summation current
S phase summation current
T phase summation current
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