Arc protection (ARCSARC) - 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. Arc protection (ARCSARC)
Characteristic Value
Operation accuracy

±3% of the set value or ±0.01 × I n

Operate time Minimum Typical Maximum

Operation mode = "Light+current" 1, 2

9 ms 3

4 ms 4

12 ms77

6 ms78

15 ms77

9 ms78

Operation mode = "Light only" 76

9 ms77

4 ms78

10 ms77

6 ms78

12 ms77

7 ms78

Reset time

Typically 40 ms 77

<55 ms 78

Reset ratio Typically 0.96
1 Phase start value = 1.0 × I n, current before fault = 2.0 × set Phase start value, f n = 50 Hz, fault with nominal frequency, results based on statistical distribution of 200 measurements
2 Includes the delay of the heavy-duty output contact
3 Normal power output
4 High-speed output