ABB RELION 620 Series Technical Manual page 671

1MRS757644 F
Table 625: NSPTOV Non group settings (Advanced)
Parameter Values (Range)
Reset delay time
4.5.6.8
4.5.6.9
4.5.6.10
620 series
Technical Manual
Unit
0...60000 ms
Monitored data
Table 626: NSPTOV Monitored data
Name
START_DUR
NSPTOV
Technical data
Table 627: NSPTOV Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
1) Negative-sequence voltage before fault = 0.0 × U
nominal frequency injected from random phase angle, results based on statistical distribution of 1000
measurements
2) Includes the delay of the signal output contact
Technical revision history
Table 628: NSPTOV Technical revision history
Technical revision
B
C
D
Step Default
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 voltage
measured: f
±1.5% of the set value or ±0.002 × U
Minimum
Start
U = 1.1 × set 33 ms
Fault
24 ms
value
Start
U = 2.0 × set
Fault
value
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
, f
n
Change
Internal change
Internal improvement.
Internal improvement.
Protection functions
Description
Reset delay time
Unit Description
% Ratio of start time /
operate time
Status
±2 Hz
n
Typical
35 ms
26 ms
, where n = 2, 3, 4, 5,...
n
= 50 Hz, negative-sequence overvoltage with
n
Section 4
n
Maximum
37 ms
28 ms
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