Installation and Connection
47
MRU4
DOK-HB-MRU4-2E
L1
L2
L3
VL12
VL23
VL31
VL1
VL2
VL3
VL1'
L1
L3
L2
N
VL2' VL3'
VL12'
VL23'
VL31'
1
X?.
2
3
4
5
6
7
8
Three-phase voltage measurement - wiring of the measurement inputs : "star-connection".
Fourth measuring input for measuring a synchronisation voltage .
V Sync*
*=* Availability dependent on
device type
VL3/
VL31
VL2/
VL23
VL1/
VL12
VX