Technical Manual WIC1
Woodward
DOK-TD-WIC1E, Rev. L
17
4.2.4 WIC1-3
For the relay version WIC1-3 the adjustment of protective functions can be done via HEX switches at the protection
relay.
Because there are only 16 steps available for setting the individual protective parameters, scaling is coarser than is
the case with parameter settings via software.
For the relay version WIC1-3 setting of parameters via interface is not possible any more, but it is possible to read-
out the stored fault values as well as the setting values of the WIC1.
The interface for this version can be found at the left of the relay and additionally above the HEX switch block.
The following parameters can be set for the relay version with integrated earth fault protection function.
Switch
Setting parameter
1
I
S
: Rated CT current
2
Choice of characteristics
3
I>: Pick-up value of the definite time over current element or start value of the in-
verse time characteristic
4
t
I>
: Tripping time of the definite t
ime over current element or time factor “a” of the in-
verse time characteristic
5
I>>: Pick-up value of the short-circuit element
6
t
I>>
: Tripping time of the short-circuit element
7
I
E>
: Pick-up value of the definite time earth over current element
8
t
IE>
: Tripping time of the definite time earth over current element
If there is no earth fault function, the HEX switches 7 and 8 are not incorporated.
Figure 4.4: WIC1-3
