Operation Manual

10 GMC-I Messtechnik GmbH
4.2 Connection circuitries
Current and voltage input takes place on the meter via connectors
which are suited for both plugging (banana plugs) and as terminals
(e.g. cable lugs). The current path is run to the two connectors I* (1)
and I (3), the voltage path to connectors L1 (2), L2 (5) and L3 (8).
For DC current and for single-phase AC systems, the voltage must be
applied to L1 (2) and L2 (5), for three-wire, three-phase systems (with-
out neutral conductor) to L1 (2), L2 (5) and L3 (8).
Following is a presentation of the wiring diagrams. The most important
diagrams are also affixed to the rear of the meter.
Power measurement on DC systems
M
P (W) = I · U =  · c
L-
L1
(2)
L2
(5)
L3
(8)
I
(3)
I*
(1)
L+
M
L1
(2)
L2
(5)
L3
(8)
I
(3)
I*
(1)