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MWF/MKF
   
    Features
 
  • Programmable for PT & CT ratio
  • True power system design compliants: ANSI-IEEE, IEC & VED standards
  • High over capability-assruing reliability
  • Effective display range of 5 to 4.5 digits
  • High accuracy of 0.5% & o.2%
  • Display with super rate LED
 

 

 
Specification
  •  
    • Accuracy (23 + 3°C) :
      • 0.5% fs or 20 cts. which ever great: MWFX, MWFY,MWFZ, MWFQ,MKFX,MKFY,MKFQ
      • 0.25% fs or 10 count: MWFX2, MWFY2, MWFZ2, MWFQ2, MKFY2, MKFZ4, MKFQ2
    • Stability :
      • Temperature coefficient < 80 ppm per degree C, long term draft < 0.2% per year
    • Digits & counts :
      • 4-4.5 digits: maximum counts 5500-1Ø2w, 11000-3Ø3w; 16000-3Ø3w, system
    • Display :
      • 0.8" super rate LED
    • Response time :
      • Sample rate 1 pf per sec typically, conversional time less 1 second
    • Input over :
      • Current input: 3 * rating-continuous, 10 * rating-30sec., 25 * rating-3sec.
      • Voltage input: maximum continuous 750V or 1.5 rating which ever great
    • Frequency :
      • 50 or 60 + 5Hz for Watt version
      • 50 or 60 5Hz for Var version ( 50/60 + 0.5 Hz -- less 0.002 change per 0.1 Hz change )
    • Creat factor :
      • Normally < 3, MWF.. series only
    • Waveform :
      • 3rd 30% for watt version only
    • 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 / 1989, IEC 255-3 (1989)
    • impulse voltage :
      • Impulse voltage 1.2 * 50 us 4 KV
      • Oscillating wave 0.5us-100KHz 3KV or 1MHz-0.25 ms 2.5 KV
    • Operating condition :
      • Operating temperature range -10 to 55oC, 0-99% RH non-condensed
    • Storage condition :
      • Storage -25 to 70oC, 20-99% RH non-condensed
    • Auxiliary power :
      • AC + 15% < 6 VA, DC + 20% < 6 watts

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