Operation principle and hardware description 37
Voltage and Current Measurement Unit NUIM-61C/NUIM-10C
The connectors of the Voltage and Current Measurement Unit NUIM-61C are shown
below.
DDCS communication
option module 3: RDCO
RMIO X39 for
control panel
connection
Optional module 1
Detachable I/O terminals
Optional module 2
LED indicators
24 VDC power
input
Optical link to AINT/NINT
board (or branching unit)
RDCU-12C
64531476
PPCS COMMUNICATION CHANNEL
U / I MEASUREMENT
NUIM-61C
V41
V42
VOLTAGE AND CURRENT
MEASUREMENT UNIT
1
POWER
SUPPLY
X7
2
3
4
5
6
-15 V
GND
+15 V
+24 V
X2
1
IU (A)
2
GND
X1
IW (C)
1
STATOR VOLTAGE MEASUREMENT
U
NOM
= 690 V
X6
2
3
4
5
6
V (B)
W (C)
7
U (A)
1
NET VOLTAGE MEASUREMENT
(GRID SUPPLY)
U
NOM
= 690 V
X5
2
3
4
5
6
V (B)
W (C)7
U (A)
1
2
GND
VOLTAGE MEASUREMENT SETTINGS
CURRENT MEASUREMENT
PHASE U (A)
CURRENT MEASUREMENT
PHASE W (C)
690 V 50 Hz Cut R80-R85
575 V 60 Hz Do not cut R80-R85
X4
EFC1
1
2
EARTH FAULT
EFC2
MAINS ON