GMC-I Messtechnik GmbH 5
2.2 Inputs, Outputs and Interfaces
Current Inputs
All current inputs are isolated from one another
. If measurements are performed with external trans-
formers, their primary and secondary current values must
be entered, in order to enable direct display
of current values. Switching between the two meas. ranges (1 A and 5 A) is accomplished via software.
Connection with 1 current transformer
Connection with 1 current transformer
in 4-wire systems (balanced load) (3L-1)
in 3-wire systems (balanced load) (3L-1)
RELAY 1 RELAY 2
I3I2I1 L3L2L1N
L1
L2
L3
N
Power
supply
1 3 11 2
kl
RELAY 1 RELAY 2
I3I2I1 L3L2L1N
L1
L2
L3
Power
supply
13 258
kl