Voltage Transformers
Wiring Examples of the Voltage Transformers
EN MRU4 10/09
Page 37
L1
L2
L3
V12
V23
V31
VL1
VL2
VL3
VL1'
L1
L3
L2
N
VL2' VL3'
V12'
V23'
V31'
1
X?.
2
3
4
5
6
7
8
Three-phase voltage measurement - wiring of the measurement inputs:
"star-connection"
MRA, MCA => terminal marking X4.
MRN4, MRU4, MRF4 => terminal marking X3.
VE
VL3/
VL31
VL2/
VL23
VL1/
VL12
Notice!
Calculation of the residual voltage VE is possible
Connection example Clockwise Rotating Field