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Seg WIC1-3 User Manual

Seg WIC1-3
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Overcurrent Protection Stages
I>, I>>, I>>>
Inverse-Time / Characteristic curve
Accuracy
Start time (pickup time)
 At testing current ≥ 2 times pickup value
<30 ms
*1) *2) *3)
Tripping delay
 For testing current in the range 2 … 20
times pickup value
±5% or ±30 ms (according to the selected curve,
see ╚═▷ “11.2.1 Characteristics (I>, I>>, I>>>)”)
Operate time = Start time + Tripping delay
*1)
These start / pickup times are only valid under the following conditions:
either: minimum current in 3 phases > 0.35⋅In
min
for at least 1 s,
or: externally supplied (only WIC1‑4).
*2)
While being CT-supplied, the start times might be longer because the WIC1 has to collect
enough electrical energy for a trip pulse. See also ╚═▷ “9.2.2 Measured Trip Times (fN =
50 Hz, 1‑/3‑phase)”.
*3)
if the protection stage is used together with Inrush Blocking it is necessary to set the
tripping delay to at least 30 ms.
214 WIC1 WIC1-1.0-EN-MAN
9 Technical Data
9.2.1.1 Phase Overcurrent Protection

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Seg WIC1-3 Specifications

General IconGeneral
BrandSeg
ModelWIC1-3
CategoryRelays
LanguageEnglish

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