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MWH+/MKH+
   
    Features
 
  • Programmable for PT & CT ratio
  • True power system design compliants: ANSI-IEEE, IEC & VED standards
  • High over capability
  • 7 digits counter
  • High accuracy of 0.2%
  • Distorted waveform signal measurement
  • Display with super rate LED
 
 
 
Specification
  • Accuracy (23 + 3°C) :
    • 00.2% rd / PF (PF = cosØ for WH version;PF = sinØ for VarH version)
  • Output pulse :
    • Photo couple isolator, open colector 30V, 50mA maximum
    • 150mA maximum for 1/10/100 pulse / unit
  • Ratio setting :
    • PT ratio, range 1.0 ~ 5000.0
    • CT ratio, range 1.0 ~ 5000.0
  • Stability :
    • Temperature range -10 ~ +50oC, maximum 70ppm/oC
  • Digits & counts :
    • Seven (7) digits 9999999 counts maximum
  • Response time :
    • Conversional rate less 1 sec typically
  • Input burden :
    • 0.2VA maximum per input element
  • Input over :
    • Current input :
      • 2 * rating continuous
      • 25 * rating - 2 sec
      • 50 * rating - 1 sec
    • Voltage input : 1.5 * rating continuous
  • Dielectric strength :
    • 2.5KVrms / 1 minute, all terminals to FG
    • 2KVrms / 1 minute, between input / output / power
  • Impulse and surge :
    • ANSI/IEEE C37.90.1-1989 (3KV) SWC
    • IEC 61000-4-12 class III SWC
    • IEC 61000-4-4 class IV SWC
    • IEC 61000-4-5 class IV Impulse
  • Operating condition :
    • Operating temperature range -25 ~ 60°C, RH 0 to 95% non-condensing
    • Storage temperature range -40 ~ 80°C, RH 0 to 95% non-condensing
  • Power supply :
    • Lo : DC 20 ~ 60V
    • Hi : AC 80 ~ 260V @40-70Hz, DC 80 ~ 330V
    • Dissipation maximum : 10 VA for AC and 5 Watt for DC