4.5.6.7 Settings
Table 623: NSPTOV Group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Start value 0.010...1.000 xUn 0.001 0.030 Start value
Operate delay time 40...120000 ms 1 40 Operate delay time
Table 624: NSPTOV Non group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Operation
1=on
5=off
1=on Operation Off / On
Table 625: NSPTOV Non group settings (Advanced)
Parameter Values (Range) Unit Step Default Description
Reset delay time 0...60000 ms 1 20 Reset delay time
4.5.6.8 Monitored data
Table 626: NSPTOV Monitored data
Name
Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % Ratio of start time / op-
erate time
NSPTOV Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.5.6.9 Technical data
Table 627: NSPTOV Technical data
Characteristic
Value
Operation accuracy Depending on the frequency of the voltage measured: f
n
±1.5% of the set value or ±0.002 × U
n
Start time ,
U
Fault
= 1.1 × set
Start
value
U
Fault
= 2.0 × set
Start
value
Minimum Typical Maximum
33 ms
24 ms
35 ms
26 ms
37 ms
28 ms
Reset time Typically 40 ms
Reset ratio Typically 0.96
Retardation time <35 ms
Table continues on the next page
1
Negative-sequence voltage before fault = 0.0 × U
n
, f
n
= 50 Hz, negative-sequence overvoltage
with nominal frequency injected from random phase angle, results based on statistical distribu-
tion of 1000 measurements
2
Includes the delay of the signal output contact
1MRS757644 H Protection functions
620 series
Technical Manual
667
To Next Page
Loading...
