Residual current measurement (RESCMMXU) - Arc protection - Merging unit - Transformer protection - 2 winding - Product Guide - RET615 Transformer Protection and Control - 5.0 FP1 IEC - IEC - 09.02.2023

RET615 Product Guide

Table 1. Residual current measurement (RESCMMXU)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f/fn = ±2 Hz

±0.5% or ±0.002 × In

at currents in the range of 0.01...4.00 × In

Suppression of harmonics

DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…

RMS: No suppression