Power measurement system

A power measurement system, comprising:

• a voltage measurement circuit (VMC) configured to measure an input voltage, the VMC comprising:
• a resistive network comprising first and second VMC resistors connected in series on a first single VMC substrate, the first VMC resistor having a resistance value larger than a resistance value of the second VMC resistor, the first VMC resistor being configured to receive the input voltage, and
• a first VMC feedback amplifier having an input in electrical communication with a point between the first and second VMC resistors, and an output in electrical communication with the second VMC resistor in a feedback configuration to output an attenuated VMC voltage signal;
• and
• a transresistance current measurement circuit (CMC) configured to measure an input primary current, the CMC comprising:
• a current transformer to transform the input primary current into a secondary current,
• a plurality of CMC amplifiers configured in a cascading arrangement, and
• a CMC feedback resistor configured in parallel with the cascaded amplifiers such that the combined gain of the cascaded CMC amplifiers directs substantially all of the secondary current through the CMC feedback resistor;
• wherein the power measurement system is configured to measure power based on a measured input voltage and a measured input primary current.