16 Table of Contents
WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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3
Device Description
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The
750-495/040-010
3-Phase Power Measurement Module (also referred to by
the short name “I/O module”) allows measurement of electrical data in a 3-phase
supply network in the medium voltage range up to 20 kV
RMS
by means of voltage
sensors per IEC 60044-7 (new version: IEC 61869-7) and current sensors per
IEC 60044-8 (new version: IEC 61869-8). Observe the information in chapter
“Technical Data”.
The I/O module measures nominal voltages up to U
LL
= 20 kV
RMS
(U
LN
=
11.547 kV
RMS
) and line-to-line nominal currents up to 300 A
RMS
. It provides a large
number of measured variables, allowing comprehensive analysis of the 3-phase
network. These measured values allow operators optimized control of their
equipment, protecting the system against damage and failure.
The measured values provided by the I/O module indicate the load type
(inductive or capacitive) and whether it is an energy consumer or producer, for
example. This allows visualization as a 4-quadrant display, as has been
implemented in the display of the measured values in WAGO-I/O-
CHECK
,
among other things.
The measured values provided are described in the following sections.
The voltages of the 3 phases are connected via voltage sensors to CAGE
CLAMP® connections L1, L2, L3 and N, and the currents are connected via
current sensors to CAGE CLAMP® connections I1, I2, I3 and N. On the basis of
these input signals, the I/O module determines the various AC measured
quantities, such as voltage and current, reactive, apparent and active power,
energy consumption, power factor, phase angle and frequency. Harmonic
analysis (current/voltage) is also possible for a selectable phase up to the
41st harmonic. The measured quantities are available in the process image,
without requiring high processing power from the controller.
Use only standards-compliant sensors, and pay attention to the technical
data
Use only voltage sensors approved per IEC 60044-7 (new version: IEC 61869-7)
and current sensors per IEC 60044-8 (new version: IEC 61869-8), and do so in
accordance with the information in the section “Technical Data.”
I/O module not suitable for billing purposes
Regardless of the accuracy class of the current and voltage sensors used, the
I/O module is not approved as a meter for billing purposes in the sense of the
electricity metering standard (DIN 43856).
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