Motor start-up supervision (STTPMSU) - Arc protection - Merging unit - Motor protection - Product Guide - REM620 Motor Protection and Control - Relion 615 series - 2.0 FP1 IEC - IEC - 09.02.2023

REM620 Product Guide
Table 1. Motor start-up supervision (STTPMSU)
Characteristic Value
Operation accuracy Depending on the frequency of the measured current: fn ±2 Hz
±1.5% of the set value or ±0.002 × In
Start time 1, 2 Minimum Typical Maximum

IFault = 1.1 × set Start detection A

27 ms

30 ms

34 ms
Operate time accuracy ±1.0% of the set value or ±20 ms
Reset ratio Typically 0.90
1 Current before = 0.0 × In, fn = 50 Hz, overcurrent in one phase, results based on statistical distribution of 1000 measurements
2 Includes the delay of the signal output contact