The invention relates to an
electric power measurement multifunctional instrument
system and a method for measurement. The
electric power measurement multifunctional instrument
system comprises an
electric power measurement module for acquiring and measuring external three-phase
voltage and current and transmitting measurement data to a
microprocessor module, an LED driving module for driving an
LED display screen, the
LED display screen for displaying the measurement data output by the
microprocessor module, an input module for acquiring input switching value and / or keystroke input value for the
microprocessor module, an output module for outputting and performing switching in, switching off, CT overload current warning, and the like to a
relay, a storage module for meeting requirements on storing
system setting parameters, accumulated electrical degree value and standard check value of the electric power measurement module, and the microprocessor module for performing control operations of initializing the system, responding to
timer interruption, reading electric quantity data, storing set data, displaying the electric quantity data, and the like.