Table 398: 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
4.3.1.8 Monitored data
Table 399: 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
4.3.1.9 Technical data
Table 400: NSPTOC 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)
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
Section 4 1MRS758755 A
Protection functions
400 REC615 and RER615
Technical Manual
To Next Page
Loading...
