Maxim-integrated 78M6610+LMU Evaluation Kit Bedienungsanleitung PDF herunterladen (Seite 22)

78M6610+LMU Evaluation Kit User Manual

22 Rev 1

6.2 Pseudo-Isolated Single-Phase Measurements Using CTs

In this diagram, the two voltage inputs are used to measure a single 2-wire interface for a high-impedance

resistive isolation between AC and the 78M6610+LMU.

Connect

USB port

to PC

CT2

Load 1

Load

Line

Neutral

AC source

Figure 3: 78M6610+LMU Evaluation Board Connections

1. Connect the AC source Neutral to J4 and the load(s).

2. Connect the AC source Line 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).

If measuring a second load:

5. Connect the AC source Line 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).

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Maxim-integrated 78M6610+LMU Evaluation Kit Bedienungsanleitung Seite 22