MW & MK Series Digital Panel Meters AC Watt & Var Meters

space

Hsiang Cheng, MW & MK DMMs

Characteristics:

space
  • Accuracy:0.5% fs MWX, MWY,MWZ, MWQ,MKX,MKY,MKQ (3-3/4 dgt) 0.25% fs+1 count: MWX4,MWY4,MWZ4,MWQ4,MKY4,MKZ4,MKQ4 (4-1/2 dgt)
  • Temperature coefficient: < 60 ppm per degree C
  • Long term drift < 0.2% per year
  • 3-3/4 digits 3999 counts maximum
  • 4-1/2 digits 19999 counts maximum
  • Display 0.56″super rated LED
  • Response time Sample rate 1 pf per sec typically
  • Current Over Range: 3 X rating-continuous, 10X rating-30sec, 25X rating-3sec.
  • Voltage Over Range: maximum continuous 750V or 1.5X rating
  • Frequency Watt version: norminal 5Hz
  • Var version: Norminal 0.5 hz < 0.2% change for 0.1 hz\
  • Dielectric strength: 2.5 kvrms/ 1 minute, (case)
  • 2 kvrms/ 1 minute, input terminals to power terminals

Product Description:

space
space The Model MW & MK measure active & reactive power, it can to measure a distorted sinusoidal wave with high harmonics or chopped SCR-conrolled waveforms. The ratio input model accepts a secondary signal from CTs & PTs and provides a direct reading. The direct input type is calibrated to the specified inputs to provide an accurate reading.
space

Specifications :

space
Range:
Accuracy (23 + 3°C): MWX, MWY,MWZ, MWQ,MKX,MKY,MKQ(3-3/4 digits) 0.5% fs or 5 cts. which ever greater : MWX4,MWY4,MWZ4,MWQ4,MKY4,MKZ4,MKQ4 (4-1/2 digits) 0.25% fs + 1 count
Stability : Temperature coefficient < 50 ppm per degree CLong term draft < 0.2% per year
Digits & counts: 3/4 digits 3999 counts maximum,4-1/2 digits 19999 counts maximum
Display : 0.56” super rate LED
Ratio Configuration settable : 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 Overload: Current input: 3 * rating-continuous, 10 * rating-30 sec, 25 * rating-3secVoltage input: maximum continuous 750 V or 3 * rated which ever great
Frequency Watt version : norminal + 5Hz
Frequency Var version : norminal + 0.5 Hz < 0.2% change for 0.1 Hz deviated of center frequency
Crest factor Normally < 3      (MW series only)
Waveform 3rd 30% for watt version only
Dielectric strength: 2.5KV rms / 1 minute, all terminals to reference ground2KV rms / 1 minute, input terminals to power terminals
Surge test: ANSI C37.90.1 / 1989, IEC 255-3 (1989)
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 :-10 to 55°C, 0-99% RH non-condensed Storage: -25 to 70°C, 20-99% RH non-condensed
Auxiliary power AC / DC version: < 3.5 VA, DC option version ±20% < 5 Watts
Applied rules and standards
Measuring & conversion: IEC 688
Dielectric strength: IEC 688
Impulse & Surge test: ANSI C37.90.1/1989IEC 255-3 (1989)
Adaptability-power system: IEC 0110
Measuring reliability: VDE 3540
space
pdf_pic Downloads: General Specifications space
base
weblink
index