Residual Overvoltage Protection Rovptov - ABB RELION REC615 Technical Manual

1MRS758755 C
Name
4.4.2.10 Technical data
Table 449: PHPTUV Technical data
Characteristic
Operation accuracy
1 2
Start time U
value
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
4.4.2.11 Technical revision history
Table 450: PHPTUV Technical revision history
Technical revision
B
C
D
4.4.3

Residual overvoltage protection ROVPTOV

1 Start value = 1.0 × U
phase with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2
Includes the delay of the signal output contact
3 Start value = 0.50, Start value multiples in range of 0.90...0.20
Minimum
REC615 & RER615
Technical Manual
Type
Value
Depending on the frequency of the voltage measured: f
±1.5% of the set value or ±0.002 × U
Start
= 0.9 × set Minimum
Fault
62 ms
Typically 40 ms
Depends on the set
<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
, Voltage before fault = 1.1 × U
n
Values (Range) Unit
2=blocked
3=test
4=test/blocked
5=off
n
Typical
66 ms
Relative hysteresis
, where n = 2, 3, 4, 5,...
n
Change
Step value changed from 0.05 to 0.01 for the
Time multiplier setting.
Curve Sat relative max range widened from
3.0 to 10.0 % and default value changed from
2.0 to 0.0 %.
Added setting
, f = 50 Hz, undervoltage in one phase-to-
n n
Protection functions
Description
±2 Hz
n
Maximum
70 ms
3
Type of time reset .
435