Numerical generator protection REG316*4
1MRK502004-Ben
Page 28
Technical Data Func-
tions (cont’d)
Technical Data Func-
tions (cont’d)
ABB Switzerland Ltd
Utility Automation
Table 41: Disturbance recorder
Number of phases 1 or 3
Accuracy of pick-up current (at f
N
)
Reset ratio of current measurement
±15%
>85%
Reset time (for power system time constants
up to 300 ms and short-circuit currents up to
40 · I
N
)
£28 ms (with main c.t.s TPX)
£28 ms (with main c.t.s TPY and
current setting ³1,2 I
N
)
£38 ms (with main c.t.s TPY and
current setting ³0,4 I
N
)
· Max. 9 c.t./v.t. channels
· Max. 16 binary channels
· Max. 12 analogue channels of internal measurement values
· 12 samples per period (sampling frequency 600 or 720 Hz at a rated frequency of 50/60 Hz)
· Available recording time for 9 c.t./v.t.- and 8 binary signals approximately 5 s
· Recording initiated by any binary signal, e.g. the general trip signal.
Data format EVE
Dynamic range 70 x I
N
, 2.2 x U
N
Resolution 12 bits
Settings:
Recording periods
Pre-event
Event
Post-event
40 to 400 ms in steps of 20 ms
100 to 3000 ms in steps of 50 ms
40 to 400 ms in steps of 20 ms
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