Star configuration
i
The "N" connection of the CD-series coupling device
should be as close to the transformer star point as
possible.
k
l
NGR
CT
R
s
(G1)
E (G)
N
CD...
PE
PE
L1
L2
L3
V
A
Q
LINETRAXX®
NGRM5…
A1
A2
X1
Ethernet
R
S
E
5
C
50m
6A
AC/DC
48...240 V
6A
11 12 14 21 22 24 31 32 34
Circuit breaker
NGR fault
Ground fault
Trip
Connection X1
I1
I2
I3
A
B
M+
Q2
Q1
+
I1
Digital 1 (configurable: pulser, NGR method)
I2
Reset IN
I3
Test IN
A
Modbus RTU (A)
B
Modbus RTU (B)
Common
M+
Analog output
Q2
Open collector: Pulser OUT
Q1
Open collector: Device health
+
Output for supply of external relays (+24 V, max. 100 mA)
NGRM500 (HRG), NGRM550 (LRG)
NGRM5xx_D00373_08_Q_XXEN/11.2022 3