Section 5
Protection relay's physical connections
5.1
Inputs
5.1.1
Energizing inputs
5.1.1.1
Phase currents
The protection relay can also be used in single or two-phase
applications by leaving one or two energizing inputs unoccupied.
However, at least terminals X120:7-8 must be connected.
Table 27:
Phase current inputs included in configurations A, B and C
Terminal
Description
X120:7-8
IL1
X120:9-10
IL2
X120:11-12
IL3
5.1.1.2
Residual current
Table 28:
Residual current input included in configurations A, B and C
Terminal
Description
X120:13-14
Io
5.1.1.3
Residual voltage
Table 29:
Additional residual voltage input included in configuration A
Terminal
Description
X120:5-6
Uo
Table 30:
Additional residual voltage input included in configuration C
Terminal
Description
X130:17-18
Uo
1MRS757456 D
Section 5
Protection relay's physical connections
REF611
173
Application Manual
Summary of Contents for REF611
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