Methods and systems involving monitoring circuit connectivity

1. A circuit protection system comprising:

a logic portion;

a current sensing device having a first node and a second node;

a current sensing circuit connected to the first node and the second node, the current sensing circuit operative to output a voltage indicative of a current sensed by the current sensing device to the logic portion; and

a connection verification portion connected to the first node, the second node, and the logic portion, the connection verification portion operative to induce a current through the current sensing device.

2. The system of claim 1 , wherein the connection verification portion further includes a second diode connected to the second node and a second resistor connected to the second diode and communicatively connected to the logic portion.

3. The system of claim 2 , wherein the connection verification portion includes:

a voltage source connected to a first resistor; and

a first diode connected to the first resistor and the first node.

4. The system of claim 2 , wherein the connection verification portion includes a voltage source communicatively connected to a switching device, the switching device communicatively connected to the first node and the logic portion.

5. The system of claim 2 , wherein the connection verification portion includes:

a third resistor connected to a voltage source and a third node;

a fourth resistor communicatively connected to the third node and the logic portion; and

a switching device having a source terminal connected to the third node, a gate terminal connected to the logic portion, and a drain terminal connected to a fourth diode, the fourth diode connected to the first node.

6. The system of claim 2 , wherein the connection verification portion includes:

a third resistor connected to a voltage source and a third node;

a fourth resistor communicatively connected to the third node and the logic portion; and

a switching device connected to the third node and the fourth diode, a the fourth diode connected to the first node, the switching device operative to open and close responsive to receiving a signal from the logic portion.

7. The system of claim 1 , wherein the current sensing circuit includes:

a bridge rectifier portion connected to the first node and the second node;

a signal conditioning portion connected to the bridge rectifier portion; and

an analog to digital converter portion connected to the signal conditioning portion.

8. The system of claim 1 , wherein the logic portion is communicatively connected to an indicator device, the logic portion operative to output an indication to a user responsive to determining that the current sensing device is not connected between the first node and the second node.

9. The system of claim 1 , wherein the system further includes:

a second current sensing device having a fourth node and a fifth node;

a second current sensing circuit connected to the fourth node and the fifth node, the current sensing circuit operative to output a voltage indicative of a current sensed by the second current sensing device to the logic portion; and

a second connection verification portion connected to the fourth node, the fifth node, and the logic portion, the second connection verification portion operative to induce a current through the second current sensing device.

10. The system of claim 1 , wherein the current sensing device includes a transformer device.

11. The system of claim 1 , wherein the current sensing device includes a Rogowski coil device.