Advertisement
www.ti.com
High Voltage! Electric shocks are possible when connecting the board to live wires. The
board must be handled with care by a professional. For safety, use of isolated test equipment with
overvoltage or overcurrent protection is highly recommended.
4.2 Test Setup
4.2.1 Connecting the TIDA-010243 to the Metering Test Equipment
The design has support for 3-phase + Neutral configuration with current transformers (CT). AC voltages and
currents can be applied to the board for testing purposes at these points:
•
Terminal blocks "J1", "J2", and "J3", correspond to the line voltage connections for Phases A, B, and C,
respectively. These terminal blocks have two positions.
•
Terminal blocks "J4", "J5", and "J6" correspond to the current inputs after the sensors for Phases A, B, and C,
respectively. These are three-position terminal blocks but only the leftmost and rightmost positions are used.
The center position, which is connected to GND, is not connected to the CT. Select the applied current to the
input of the CT so that the current does not exceed 100 A. In addition, before performing any test, verify that
this terminal block is securely connected to both output leads of the CT.
•
Terminal block "J15" corresponds to the current input after the sensor for the Neutral line. This terminal block
is a three-position terminal block but only the leftmost and rightmost positions are used. The center position,
which is connected to GND, is not connected to the CT. Select the applied current to the input of the CT so
that the current does not exceed 100 A. In addition, before performing any test, verify that this terminal block
is securely connected to both output leads of the CT.
Figure 4-2
and
Figure 4-3
properly for the one-voltage configuration.
Figure 4-2. Test Setup Configuration
TIDUF25 – JUNE 2023
Submit Document Feedback
CAUTION
show the various test setup connections required for the reference design to function
Copyright © 2023 Texas Instruments Incorporated
Hardware, Software, Testing Requirements, and Test Results
Figure 4-3. Port Image
Cost-Effective, 3-Phase CT Electricity Meter Reference Design Using
29
Standalone ADC
Advertisement
