PCB Build

(Still waiting for J4 screw terminals to arrive - this is what connects back to the CMRI node)

Quick and dirty, but using the same current transformer that the NCE version uses (1:200 turn ratio)

• LED1 electrically does not have a polarity as it voltage is AC and swings positive and negative

Wiring

2 ea of 12 inch 18 ga wires

• Pad closest to diode get a fork terminal crimped at end
• Pad closest to PTC resistor gets a male spade connector crimped at end
• Single wire through current sense transformer is 1.5" 18ga

Timeline

22 Apr 2019 Boards shipped from pcbway today

24 Apr 2019 PCBs arrived and bench testing is complete

02 May 2019 1st 5 units are built and tested

09 May 2019 Starting second group of 5

Demonstration

This video demonstrates over-current  and reset using a 2A high current short in parallel with a 200mA load across the track. Over-current LED comes on and resets with 200mA load on the track after the short is removed.

BOM