Safety power disconnection for power distribution over power conductors to power consuming devices

A power distribution system comprising:

• a power distribution circuit comprising:
• a distribution power input configured to receive current distributed by a power source;
• a distribution power output configured to distribute the received current over a power conductor coupled to an assigned remote unit among a plurality of remote units;
• a distribution switch circuit coupled between the distribution power input and the distribution power output, the distribution switch circuit comprising a distribution switch control input configured to receive a distribution power connection control signal indicating a distribution power connection mode;
• the distribution switch circuit configured to be closed to couple the distribution power input to the distribution power output in response to the distribution power connection mode indicating a distribution power connect state;
• and
• the distribution switch circuit further configured to be opened to decouple the distribution power input from the distribution power output in response to the distribution power connection mode indicating a distribution power disconnect state;
• and
• a current measurement circuit coupled to the distribution power output and comprising a current measurement output;
• the current measurement circuit configured to measure a current at the distribution power output and generate a current measurement on the current measurement output based on the measured current at the distribution power output;
• and
• a controller circuit comprising:
• a current measurement input communicatively coupled to a current measurement output of the power distribution circuit;
• and
• the controller circuit configured to:
• generate the distribution power connection control signal indicating the distribution power connection mode to the distribution switch control input of the power distribution circuit indicating the distribution power connect state;
• determine if the measured current on a current measurement input among the one or more current measurement inputs of the power distribution circuit exceeds a predefined threshold current level when the distribution switch circuit is closed to couple the distribution power input to the distribution power output;
• in response to the measured current of the power distribution circuit exceeding the predefined threshold current level, communicate the distribution power connection control signal indicating the distribution power connection mode to the distribution switch control input of the power distribution circuit indicating the distribution power disconnect state;
• lower a voltage level on the distribution power output from a first voltage level to a second voltage level distributing the received current over the power conductor coupled to the assigned remote unit;
• and
• raise the voltage level on the distribution power output from the second voltage level to the first voltage level distributing the received current over the power conductor coupled to the assigned remote unit.