Section 7
Differential protection
130
Rl
Rct
IEC05000427 V2 EN-US
Figure 49:
The high impedance principle for one phase with two current
transformer inputs
UR
R
Rres
I>
Protected Object
UR
a) Through load situation
UR
b) Through fault situation
UR
c) Internal faults
1MRK 511 401-UEN A
Rl
Rct
IEC05000427-2-en.vsd
Bay control REC670 2.2 IEC
Application manual