ABB RELION REX640, Техническое руководство, Страница: 850 / 1960

4.4.5.10 MNSPTOC Monitored data
Table 775: MNSPTOC Monitored data
Name Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % Ratio of start time / op-
erate time
T_ENARESTART INT32 0...10000 s Estimated time to reset
of block restart
MNSPTOC Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.4.5.11 Technical data
Table 776: MNSPTOC Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured current: f
n
±1.5% of the set value or ±0.002 × I
n
Start time
1, 2
I
Fault
= 2.0 × set Start value Minimum Typical Maximum
23 25 ms 28 ms
Reset time Typically 40 ms
Reset ratio Typically 0.96
Retardation time <35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode ±5.0% of the theoretical value or ±20 ms
3
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
4.4.5.12 Technical revision history
Table 777: MNSPTOC Technical revision history
Product connectivity
level
Technical revision Change
PCL2 E Added new input
ST_EMERG_ENA
which al-
lows motor energization in an emergency
case
4.5 Voltage protection
1
Negative-sequence current before = 0.0, f
n
= 50 Hz, results based on statistical distribution of
1000 measurements.
2
Includes the delay of the signal output contact.
3 Start value multiples in range of 1.10...5.00.
Protection functions 1MRS759142 F
850 REX640
Technical Manual