4.12.4.9 SRCPTOC Monitored data
Table 1092: SRCPTOC Monitored data
Name Type Values (Range) Unit Description
I_RESO_A FLOAT32 0.00...40.00 xIn Resonance current for
phase A
I_RESO_B FLOAT32 0.00...40.00 xIn Resonance current for
phase B
I_RESO_C FLOAT32 0.00...40.00 xIn Resonance current for
phase C
SRCPTOC Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.12.4.10 Technical data
Table 1093: SRCPTOC Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured current:
f
n
±2 Hz
Operate value accuracy:
±3 % of the set value or ±0.002 × I
n
(for 2nd order
Harmonics)
±1.5 % of the set value or ±0.002 × I
n
(for 3rd order <
Harmonics < 10th order)
±6 % of the set value or ±0.004 × I
n
(for Harmonics >=
10th order)
Reset time Typically 45 ms or maximum 50 ms
Retardation time Typically 0.96
Retardation time <35 ms
Operate time accuracy in definite
time mode
±1.0 % of the set value or ±20 ms
Suppression of harmonics -50 dB at f = f
n
4.12.5 Compensated neutral unbalance voltage protection
CNUPTOV (ANSI 59NU)
4.12.5.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Compensated neutral unbalance
voltage protection
CNUPTOV CNU> 59NU
Protection functions 1MRS759142 F
1148 REX640
Technical Manual
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