Low-voltage ride-through protection (LVRTPTUV) - Arc protection - Merging unit - Motor protection - Product Guide - REM620 Motor Protection and Control - Relion Protection and Control - 2.0 FP1 IEC - IEC - 01.06.2023

REM620 Product Guide

Table 1. Low-voltage ride-through protection (LVRTPTUV)
Characteristic Value
Operation accuracy Depending on the frequency of the measured voltage:

f n ±2 Hz

±1.5% of the set value or ±0.002 × U n
Start time 1, 2 Typically 40 ms
Reset time Based on maximum value of Recovery time setting
Operate time accuracy ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f n, where n = 2, 3, 4, 5,…
1 Tested for Number of Start phases = 1 out of 3, results based on statistical distribution of 1000 measurements
2 Includes the delay of the signal output contact