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2857-570/024-001
Planning
66
Product manual | Version: 2.0.0
3-Phase Power Measurement Module, 1 A
be measured.
The normal permissible overload level of 1,2 × I
pn
presents no problems for the signal
conditioner but may lead to minor measurement errors.
For more detailed information, see
8
.
Accuracy Class
Please note that the overall accuracy of the setup consisting of the signal conditioners
and current transformers essentially depends on the accuracy class of the transformers.
Types of Current
The signal conditioner can measure any alternating currents with harmonic content up to
a frequency of 2665 Hz.
Overcurrent Limiting Factor FS
A current transformer’s overcurrent limiting factor (FS) indicates at which multiple of the
rated primary current saturation occurs with the current transformer.
Power Calculation
Power calculation of copper conductors between measurement device and current trans-
former:
P
V
Power loss of connection cables (VA)
I
S
Secondary rated measuring current strength
(A)
I
Simple cable length
A
CU
Cable cross section (mm
2
)
Protection against Hazardous Touch Voltages
DANGER
Install protection against electric shock!
All wiring for the measurement system shall be provided with protection against shock
hazard voltages along with the corresponding safety signs!