ABB Relion 611 Series, Technical Manual

Page: 239 / 536

Table 238: NSPTOC Non group settings (Advanced)
Parameter Values (Range) Unit Step Default Description
Minimum operate time 20...60000 ms 1 20 Minimum operate time for IDMT curves
Reset delay time 0...60000 ms 1 20 Reset delay time
4.4.1.8 Monitored data
Table 239: NSPTOC Monitored data
Name Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % Ratio of start time /
operate time
NSPTOC Enum 1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.4.1.9 Technical data
Table 240: NSPTOC Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured
current: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Start time
1)2)
Minimum Typical Maximum
I
Fault
= 2 × set Start
value
I
Fault
= 10 × set
Start
value
23 ms
15 ms
26 ms
18 ms
28 ms
20 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,…
1) Negative sequence current before fault = 0.0, f
n
= 50 Hz, results based on statistical distribution of 1000
measurements
2) Includes the delay of the signal output contact
3) Maximum
Start value = 2.5 × I
n
,
Start value multiples in range of 1.5...20
1MRS757454 D
Section 4
Protection functions
611 series 233
Technical Manual