7.1.5.1 Test Currents
The transformation ratio of primary currents to secondary currents of the CTs are equally
proportionate as the test current via the C–D winding to the secondary current. This means,
no matter which CT type is in operation, for the secondary test always the same test values
are used.
In Test values via C–D winding with the di󰈚erent CT types
DIP 1-1 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON
DIP 1-2 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON
DIP 1-3 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON
DIP 1-4 OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON
HEX switch 1 0 1 2 3 4 5 6 7 8 9 A B C D E F
»In,relative« 1.0 1.125 1.25 1.375 1.5 1.625 1.75 1.875 2.0 2.125 2.25 2.5 2.75 3.0 3.25 3.5
WIC1-W2 [A] 16 18 20 22 24 26 28 30 32 34 36 40 44 48 52 56
Test current C–D [A] 0.32 0.36 0.40 0.44 0.48 0.52 0.56 0.60 0.64 0.68 0.72 0.80 0.88 0.96 1.04 1.12
WIC1-W3 [A] 32 36 40 44 48 52 56 60 64 68 72 80 88 96 104 112
Test current C–D [A] 0.32 0.36 0.40 0.44 0.48 0.52 0.56 0.60 0.64 0.68 0.72 0.80 0.88 0.96 1.04 1.12
WIC1-W4 [A] 64 72 80 88 96 104 112 120 128 136 144 160 176 192 208 224
Test current C–D [A] 0.32 0.36 0.40 0.44 0.48 0.52 0.56 0.60 0.64 0.68 0.72 0.80 0.88 0.96 1.04 1.12
WIC1-W5 [A] 128 144 160 176 192 208 224 240 256 272 288 320 352 384 416 448
Test current C–D [A] 0.32 0.36 0.40 0.44 0.48 0.52 0.56 0.60 0.64 0.68 0.72 0.80 0.88 0.96 1.04 1.12
WIC1-W6 [A] 256 288 320 352 384 416 448 480 512 544 576 640 704 768 832 896
Test current C–D [A] 0.32 0.36 0.40 0.44 0.48 0.52 0.56 0.60 0.64 0.68 0.72 0.80 0.88 0.96 1.04 1.12
This means when In is multiplied with the setting value of the relevant protection element
of I>, I>>, I>>> or IG>, IG>> it equals the test current via the test winding. This is then
independent of the CT type. The following tables show all setting values for the protection
steps I>, I>> and IG>.
194 WIC1 WIC1-1.0-EN-MAN
7 Commissioning
7.1.5.1 Test Currents
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