Circuit-breaker condition monitoring (SSCBR) - Arc protection - Merging unit - Transformer protection - 2 winding - Product Guide - RET615 Transformer Protection and Control - Relion 615 series - 5.0 FP1 IEC - IEC - 09.02.2023

RET615 Product Guide

Table 1. Circuit-breaker condition monitoring (SSCBR)
Characteristic Value
Current measuring accuracy

±1.5% or ±0.002 × In

(at currents in the range of 0.1…10 × In)

±5.0%

(at currents in the range of 10…40 × In)

Operate time accuracy

±1.0% of the set value or ±20 ms

Travelling time measurement

+10 ms / -0 ms