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DIGITIAL PANEL VOLT METER OF SIZE96X96 MM WITH 3 DIGIT 7 SEGMENT LEDDISPLAY, MODEL SELEC MV15 MV305SPECN. DISPLAY RANGE:0-516V, INPUTRANGE:50-480V AC,45-65HZ,METHOD:TRUERMS, ACCURACY:+/-5% OF FULL SCALEOVER RATED OPERATING CONDITION,MEASURING ELECL. DROP:0.23W AT 480VAC INPUT, INPUT IMPEDANCE:1 M OHMS+/-5%, CONTINOUS MAX INPUTRATING:516V AC, SAMPLING RATE:3SAMPLE, DI ELECTRIC WITHSTANDING: 2KVA AC BETWEEN AUXILIARY SUPPLY &MEASURING INPUT, RATED IMPULSEWITHSTANDING VOLT:3.5 KV(1.2/50 MICROSEC), SUPPLY VOLT:240V AC+/-20%, 50/60HZ, POWER CONSUMPTION:3 VA MAX,TEMP:0-50C HUMIDITY (NONCONDENSING): 90% RH.