Bender NGRM700 Manual de inicio rápido - Página 4

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Measuring current transformer connection
Depending on the system to be monitored, a suitable measuring current transformer has to be chosen.
All common measuring current transformers (50 mA or 5 A on the secondary side) can be used. The fol-
lowing table helps you with the choice:
System type
I
f
Ratio
Length
connecting cables
I
Δn
Type
CT: k
CT: l
CT installation W...AB
W...AB
N
N
NGR
CD...
4
AC + DC
1...10 A
0...3800 Hz
600:1
max. 10 m
W35...120AB
W...AB
k
AN420
l
NGRM700: 50 mA
NGRM700: C
AC
5...25 A
42...3800 Hz
600:1
max. 40 m
W20...120
W1-S35...W5-S210
W...
W...S...
k
l
NGRM700: 50 mA
NGRM700: C
50 mm
1.97 in
250 mm
9.84 in
k
l
50mA
C
NGRM700
NGRM700_D00292_02_Q_XXEN/06.2018
AC
5...25 A
50/60 Hz
60:5
max. 25 m (4 mm²)
max. 40 m (6 mm²)
CTB31...41
CTB
k
l
NGRM700: 5 A
NGRM700: C
WXS...
–12V
GND
+12V