ABB RED615 - Section 5 Protection Relays Physical Connections; Inputs; Energizing Inputs; Phase Currents

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 24: Phase current inputs
Terminal Description
X120:7-8 IL1
X120:9-10 IL2
X120:11-12 IL3
5.1.1.2 Residual current
Table 25: Residual current input
Terminal
Description
X120:13-14 Io
5.1.1.3 Phase voltages
Table 26: Phase voltage inputs included in configuration D
Terminal
Description
X130:11-12 U1
X130:13-14 U2
X130:15-16 U3
5.1.1.4 Residual voltage
Table 27: Additional residual voltage input included in configuration D
Terminal
Description
X130:17-18 Uo
1MRS758127 C Section 5
Protection relay's physical connections
RED615 97
Application Manual