4.6 Directional earth fault element DEF test
(1)
Element
DEFF
DEFR
(2)
Element
DEFF
DEFR
4.7 Inverse definite minimum time overcurrent element (IDMT) EFI and OCI test
Element
EFI
OCI
4.8 Thermal overload element test
Element
THM-A
THM-T
4.9 Current change detection element
Element
OCD
OCDP
Current setting
Measured current
Voltage setting
Measured voltage
Test current
Measured operating time
1.2 × I s
20 × I s
1.2 × I s
20 × I s
Test current
Measured operating time
1.2 × I s
10 × I s
Test current
1.2 × Fixed setting
1.2 × Setting value
384
Result
6 F 2 S 0 8 5 0