Connection with 1 current transformer
in 3-wire systems (balanced load)
(3L13)
Connection with 3 current transformers
in 4-wire systems (Open Y) (4L13)
For this connection type the accuracy
values for the measurement of power, energy
and power factor are only observed in the case
of low-distortion tension. The setting „Compen-
sating reactive power“ is not possible.
6 GMC-I Messtechnik GmbH
Voltage Inputs
Each voltage measurement input is pr
ovided with a safety impedance (incl. the N conductor). Measure-
ments within 3-phase systems of up t
o 500 V are possible without the use of external transformers.
Mains Supply Power
Mains supply power must correspond to the specified values ind
icated on the serial plate. Correct con-
nection is absolutely essential!
Synchronizing Input
The synchronizing input is used to select the int
erval for calculation of the consumption value.
An external, potential-free contact must be used to drive
this input. However, synchronization can also
be internally controlled with the software. Alternatively, a switch-over between low tariff and high tariff is
possible with the synchronizing input (see chapter 4.8 on page 35).
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