Seg WI Series - Functionality

4.6.1
Functionality
I2/I1> – Unbalanced Load Protection
wiNPSDOC_Y19
2
&
Φ
IL2
IL1
IL3
I2/I1> .
I2/I1
PPS
NPS
filter
I2/I1> . Pickup
I2/I1> . Trip
19
21
I2/I1> .
Definition
20
I2/I1> . Alarm
&
&
[Device planning / Definition]
5
6
7
≥1
Trip
Alarm
I2/I1> .
t
t
0
CT .
Phase Sequence
[Field Para / General Settings]
ACB
ABC
I2/I1
◄
I2/I1> . Active
IH2 . Block. L1
IH2 . Block. L2
IH2 . Block. L3
Fig. 56: Functionality of the Unbalanced Load stage.
154 WIC1 WIC1-1.0-EN-MAN
4 Protective Elements
4.6.1 Functionality