Non-directional earth-fault protection (EFxPTOC) main settings - Arc protection - Merging unit - Transformer protection - 2 winding - Product Guide - RET615 Transformer Protection and Control - 5.0 FP1 IEC - IEC - 24.05.2023

RET615 Product Guide

Table 1. Non-directional earth-fault protection (EFxPTOC) main settings
Parameter Function Value (Range) Step
Start value EFLPTOC 0.010...5.000 × I n 0.005
EFHPTOC 0.10...40.00 × I n 0.01
EFIPTOC 1.00...40.00 × I n 0.01
Time multiplier EFLPTOC and EFHPTOC 0.05...15.00 0.01
Operate delay time EFLPTOC and EFHPTOC 40...200000 ms 10
EFIPTOC 20...200000 ms 10
Operating curve type EFLPTOC

Definite or inverse time

Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19

EFHPTOC

Definite or inverse time

Curve type: 1, 3, 5, 9, 10, 12, 15, 17

EFIPTOC Definite time
1 For further reference, see the Operation characteristics table