Seg WI Series User Manual

*3)
if the protection stage is used together with Inrush Blocking it is necessary to set the
tripping delay to at least 30 ms.
*5)
The measuring value I2/I1 is released under the conditions I1 > 20% In and I2 > 0,5% In,
otherwise it is assumed as 0.
9.2.1.4 Peak Overcurrent Protection
Peak Overcurrent Protection Ipeak> Accuracy
Pickup value »I« ±10% of the setting value
Tripping delay »t« ±1% or ±10 ms
Operate time (for »t« = 0 ms)
at testing current ≥ 2 times pickup value
<20 ms
*1) *2)
15 ms typical
*1)
These start / pickup times are only valid under the following conditions:
• either: minimum current in 3 phases > 0.5⋅In
min
for at least 0.5 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.
218 WIC1 WIC1-1.0-EN-MAN
9 Technical Data
9.2.1.4 Peak Overcurrent Protection

Seg WI Series Specifications

General

Brand	Seg
Model	WI Series
Category	Relays
Language	English