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UMAF/UMVF
   
    Features
 
  • 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"
 
 
 
 
 
Specification
  • Accuracy (23 + 3°C) : 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 : Ratio settable : CT ration for UMAF, PT ration for UMVF
  • Response time : Sample rate 1 of per sec typically
  • Input burden : 0.25VA maximum
  • Input over :
    • Current input : 3 * rating-continuous, 10 * rating - 30 sec, 25 * rating - 3 sec
    • Voltage input : maximum continuous 750V or 3 * 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 voltage :
    • Impulse voltage 1.2 * 50 us 4KV
    • Oscillation wave 0.5us - 100KHz 3KV & 1MHz - 0.25ms 2.5KV
  • Operating condition:
    • Temperature range -10 to 55°C, 0 to 99% RH non-condensed
    • Storage -25 to 70°C, 20-99% RH non-condensed
  • Auxiliary power : AC / DC version < 3.5VA, DC option version +20% < 5 watts