Monitored Data; Technical Data - ABB RELION REX640 Technical Manual

Section 4
Protection functions
Parameter
Recovery time 2
Recovery time 3
Recovery time 4
Recovery time 5
Recovery time 6
Recovery time 7
Recovery time 8
Recovery time 9
Recovery time 10
4.5.8.9
4.5.8.10
824
Values (Range) Unit
0...300000 ms
0...300000 ms
0...300000 ms
0...300000 ms
0...300000 ms
0...300000 ms
0...300000 ms
0...300000 ms
0...300000 ms

Monitored data

Table 782: LVRTPTUV Monitored data
Name
LVRTPTUV

Technical data

Table 783: LVRTPTUV Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Operate time accuracy
Suppression of harmonics
Number of Start phases = 1 out of 3, results based on statistical distribution of 1000
1) Tested for
measurements
2) Includes the delay of the signal output contact
Step Default
1 1000
1 10000
1 10000
1 10000
1 10000
1 10000
1 10000
1 10000
1 10000
Type Values (Range)
Enum 1=on
2=blocked
3=test
4=test/blocked
5=off
Value
Depending on the frequency of the measured
voltage:
f
±1.5% of the set value or ±0.002 × U
Typically 40 ms
Based on maximum value of
setting
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
Description
2nd time coordinate for defining LVRT
curve
3rd time coordinate for defining LVRT
curve
4th time coordinate for defining LVRT
curve
5th time coordinate for defining LVRT
curve
6th time coordinate for defining LVRT
curve
7th time coordinate for defining LVRT
curve
8th time coordinate for defining LVRT
curve
9th time coordinate for defining LVRT
curve
10th time coordinate for defining LVRT
curve
Unit Description
Status
±2 Hz
n
Recovery time
, where n = 2, 3, 4, 5,...
n
1MRS759142 C
n
REX640
Technical Manual