ABB RET630 - Non-Directional Earth-Fault Protection Main Settings

Table 32. Non-directional earth-fault protection (EFxPTOC) main settings
Parameter Function Value (Range) Step
Start value EFLPTOC 0.010...5.000 pu 0.005
EFHPTOC 0.10...40.00 pu 0.01
EFIPTOC 0.10...40.00 pu 0.01
Time multiplier EFLPTOC 0.05...15.00 0.05
EFHPTOC 0.05...15.00 0.05
Operate delay time EFLPTOC 0.04...200.00 s 0.01
EFHPTOC 0.02...200.00 s 0.01
EFIPTOC 0.02...200.00 s 0.01
Operating curve
type
1)
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 please refer to the Operating characteristics table
Transformer Protection and Control 1MRS756788 A
RET630
Product version: 1.0 Issued: 15.09.2009
ABB 29