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Panel Meter

UMVF-U Type

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The model UMVF series are designed under micro base, and it also specially designed to solve the complicated ratio problem in PT variables, directly accept a secondary signals from PT then scale to a primary reading display.
The designed specifications of the units, truly a real power system design, compliant ANSI-IEEE & IEC, VDE those standards providing full protection for surge intrusion & unusual over input to assure reliable operation.
  • True power system design complaints ANSI-IEEE, IEC & VDE standards
  • High over capability to assure reliable operation
  • Ration programmable with field re-range ability
  • High accuracy of 0.2% fs
  • 4-1/2 digits maximum of 19999 counts
  • Super rate display of 0.56"
  • Accuracy (23±3℃) : 0.2% fs
  • Stability : Temperature coefficient < 50 ppm per degree C. Long term draft < 0.2% per year
  • Digits / counts / display : Maximum 19999 counts of 4-1/2 digits. 0.56” super rate LED
  • Configuration : PT Ratio settable
  • Response time : Sample rate 1 of per sec typically
  • Input burden : 0.25VA maximum
  • Input over : Voltage input : maximum continuous 750V or 3 x rated which ever great
  • Frequency : 48 - 400 Hz
  • Dielectric strength :
    • 2.5kV rms / 1 minute, all terminals to reference ground (case)
    • 2kV rms / 1 minute, input terminals to power terminals
  • Surge test : ANSI C37.90.1/1989, IEC 255-3 (1989)
  • Impulse test :  
    • Impulse voltage 1.2 x 50 us 4kV
    • Oscillation wave 0.5us – 100kHz 3KV & 1MHz - 0.25ms 2.5kV
  • Temperature condition :
    • Operation -10 to 55℃, 0 to 99% RH non-condensed
    • Storage -25 to 70℃, 20-99% RH non-condensed
  • Auxiliary power : AC / DC version < 3.5VA, DC option version ±20% < 5 watts
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