Digital Power Meter - MAF / MVF

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The model MAF & MVF series is specially designed to solve the complicated ratio problem in PT & CT variables, directly accept a secondary signals from PT or CT & 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.
Digital Power Meter - MAF / MVF

 

Features
  • True power system design complaints
  • ANSI-IEEE, IEC & VDE standards
  • High over capability to assure reliable operation
  • Ration programmable with field re-rangeability
  • High accuracy of 0.2% fs
  • 3-3/4 digits maximum of 3999 counts
  • Super rate display of 0.56"
Model & Ordering

      

      
Specification
  • Accuracy (23 + 3oC)
    • 0.2% fs
  • Stability
    • Temperature coefficient < 50 ppm per degree C
    • Long term draft < 0.2% per year
  • Digits & counts
    • 3-3/4 digits 3999 counts maximum
  • Display
    • 0.56" super rate LED
  • Configuration
    • Ratio settable : CT ratio for MAF, PT ratio for MVF
  • Response time
    • Sample rate 1 of per sec typically
  • Input burden
    • 0.25 VA maximum
  • Input over
    • Current input: 3 * rating-continuous, 10 * rating-30 sec, 25 * rating-3sec
    • Voltage input: maximum continuous 750 V or 3 * rated which ever great
  • Frequency
    • 48-400 Hz
  • Dielectric strength
    • 2.5 KV rms / 1 minute, all terminals to reference ground (case)
    • 2 KV 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 4 KV
    • Oscillation Wave 0.5us-100KHz 3KV & 1MHz-0.25 ms 2.5 KV
  • Operating condition
    • Operating temperature range -10 to 55oC, 0-99% RH non-condensed
    • Storage -25 to 70oC, 20-99% RH non-condensed
  • Auxiliary power
    • AC / DC version < 3.5VA, DC option version + 20% < 5 watts