ABB Relion REC670 Applications Manual page 97
Bay control version 2.1 iec
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Also See for Relion REC670:
- Applications manual (658 pages) ,
- Commissioning manual (218 pages) ,
- Product manual (139 pages)
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1MRK 511 358-UEN A
Rct
IEC05000427 V2 EN-US
Figure 33: The high impedance principle for one phase with two current transformer
Application manual
Rl
R
I>
Protected Object
UR
a) Through load situation
UR
b) Through fault situation
UR
c) Internal faults
inputs
Rl
UR
Rres
Section 6
Differential protection
Rct
IEC05000427-2-en.vsd
91
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