Technical Manual WIC1
Woodward
DOK-TD-WIC1E, Rev. L
51
Test step 3): Test of the over-current step I>:
Settings:
I> =
1.05 x Is
tI> =
EXIT
I>> = 4.00 x Is
tI>> = 0.10s
IE> = EXIT
tIE> = 0.2s
Test to be carried out as described under “Test step 1”.
Test step 4): Test of the trip delay tI>
Settings:
I> =
1.05 x Is
tI> =
1.00s
Test to be carried out as described under „Test step 2“.
Test step 5)*: Test of the earth current step IE>
Settings:
I> =
EXIT
tI> =
1.00s
I>> = 4.00 x Is
tI>> = 0.10s
IE> = 0.9 x Is
tIE> = EXIT
*= only applicable to devices that offer earth current protection
Test to be carried out as described under „Test step 1“.
Test step 6: Test of the trip delay tIE>
Settings:
IE> = 0.9 x Is
tIE> = 0.2s
Test to be carried out as described under „Test step 2“.
Tests on the earth current path can only be performed with a single-phase power source if
the switching point for the IE> setting is >= 0.9 x Is. See chapter 5.8.
