Siemens simatic et200sp Manual page 20

Wiring
3.2 Connection examples
Connection type
1P2W
Single-phase measurement,
2 conductors
3 x 1P2W
3 x single-phase measure-
ment
3 x 1P2W
3 x single-phase measure-
ment
If short-circuit resistance is ensured by conformity to IEC 61439-1:2009, there is no need for separate line protection for the
AI Energy Meter 480VAC ST.
20
Wiring diagram Comment
Measuring the load in an AC network with a
current and a voltage converter
Energy Meter supplies the value "0" for all
measured values of Phases 2 and 3 as well
as for some cross-phase measured values.
Measurement with three current transform-
ers for any three loads that are each con-
nected to one of the three phases
Max. permissible secondary current of the
current transformer is 1 A
Measurement with three current transform-
ers and three voltage transformers for any
three loads that are each connected to one
of the three phases
Max. permissible secondary current of the
current transformer is 1 A
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
Manual, 12/2015, A5E36061895-AA