1312 – mean active power valuedisplay symbol13 – menu safety symbol14 – units of the displayed values15 – 3-phase values displaysymbol16 – base values ratios17 – field for displaying basevalues, power, THD, date,mean values, frequency,time and power guard6.2 Power-on messagesAfter connection of voltage inputs the meter performsa display test and displays the ND10 meter name, build andcurrent software version.where: r n.nn is a number of the current software version or special build number.b n.nn is a bootloader version number.Fig. 5. Meter start messagesCaution! If the display shows Err Cal or Err EE message,please contact the maintenance service.18 – min / max value symbols19 – symbols of value-phaseconnection20 – power and energy characte-ristics symbol