ABB RELION 620 Series Technical Manual page 613

1MRS757644 F
Table 544: NSPTOC Non group settings (Advanced)
Parameter Values (Range)
Minimum operate time
Reset delay time
4.4.1.8
4.4.1.9
620 series
Technical Manual
Unit
20...60000 ms
0...60000 ms
Monitored data
Table 545: NSPTOC Monitored data
Name
START_DUR
NSPTOC
Technical data
Table 546: NSPTOC Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
1) Negative sequence current before fault = 0.0, f
measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × I
Step Default
1 20
1 20
Type Values (Range)
FLOAT32 0.00...100.00
Enum 1=on
2=blocked
3=test
4=test/blocked
5=off
Value
Depending on the frequency of the measured
current: f
±1.5% of the set value or ±0.002 × I
Minimum
Start
I = 2 × set 23 ms
Fault
15 ms
value
Start
I = 10 × set
Fault
value
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × f
= 50 Hz, results based on statistical distribution of 1000
n
, Start value multiples in range of 1.5...20
n
Section 4
Protection functions
Description
Minimum operate time for IDMT curves
Reset delay time
Unit Description
% Ratio of start time /
operate time
Status
±2 Hz
n
n
Typical Maximum
26 ms 28 ms
18 ms 20 ms
, where n = 2, 3, 4, 5,...
n
3)
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