LMU Evaluation Kit User Manual
Rev 1
9
3.2 Single/Multiphase Measurements Using CTs
In this diagram, the on-board relays are also wired in series to demonstrate load control.
Connect
USB port
to PC
CT1
CT2
Line 1 Load
Line 2 Load
N
L1
N
L2
Line 1
Neutral
Line 2
+
+
AC source
Figure 2: LMU Evaluation Board Connections
1. Connect the AC source Neutral to J15 and the load(s).
2. Connect the AC source Line 1 to J2 and to J19 (Relay1) through the Line 1 CT.
3. Connect J20 (Relay1) to Line 1 load.
4. Connect Line 1 CT’s secondary to J14 (burden resistor).
5. Connect the AC source Line 2 to J4 and to J31 (Relay2) through the Line 2 CT.
6. Connect J30 (Relay1) to Line 1 load.
7. Connect Line 2 CT’s secondary to J10 (burden resistor).
