Frequency protection (FRPFRQ) - 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. Frequency protection (FRPFRQ)
Characteristic Value
Operation accuracy f>/f<

±5 mHz

df/dt

±50 mHz/s (in range |df/dt| <5 Hz/s)

±2.0% of the set value (in range 5 Hz/s < |df/dt| < 15 Hz/s)

Start time f>/f<

<80 ms1

df/dt <120 ms
Reset time <150 ms
Operate time accuracy ±1.0% of the set value or ±30 ms
1 Applies to sudden frequency change of ≤0.2 Hz or to frequency slope of ≤ 5 Hz/s. When frequency change is outside of these limits, start may be delayed by additional 100 ms to prevent false starts when connecting / disconnecting heavy loads.