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Section 5
IED physical connections
5.1
Inputs
5.1.1
Energizing inputs
5.1.1.1
Phase currents
The IED 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 22:
Phase current inputs included in configuration B
Terminal
Description
X120-7, 8
IL1
X120-9, 10
IL2
X120-11, 12
IL3
5.1.1.2
Residual current
Table 23:
Residual current input included in configuration B
Terminal
Description
X120–13, 14
Io
5.1.1.3
Phase voltages
Table 24:
Phase voltage inputs included in configuration B
Terminal
Description
X120-1, 2
U1
X120-3, 4
U2
X120-5, 6
U3
1MRS757054 A
Section 5
IED physical connections
REU615
63
Application Manual