4.8.3.9 DQPTUV Monitored data
Table 1016: DQPTUV Monitored data
Name Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % Ratio of start time / op-
erate time
Q FLOAT32 -160.000...160.000 xSn Reactive power
DQPTUV Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.8.3.10 Technical data
Table 1017: DQPTUV Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured
current and voltage:
f
n
±2 Hz
Reactive power range |PF| <0.71
Power:
±3.0 % or ±0.002 × Q
n
Voltage:
±1.5 % of the set value or ±0.002 × U
n
Start time
1, 2
Typically 46 ms
Reset time <50 ms
Reset ratio Typically 0.96
Operate time accuracy ±1.0 % of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
4.8.4 Underpower factor protection MPUPF (ANSI 55U)
4.8.4.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Underpower factor protection MPUPF PF< 55U
1
Start value
= 0.05 × S
n
, reactive power before fault = 0.8 ×
Start value
, reactive power overshoot 2
times, results based on statistical distribution of 1000 measurements
2
Includes the delay of the signal output contact
Protection functions 1MRS759142 F
1078 REX640
Technical Manual
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