Features
- True power system design complaints ANSI-IEEE, IEC & VDE standards
- High over capability to assure reliable operation
- Available of 3-3/4 & 4-1/2 digits
- High accuracy of 0.5% & 0.25%
- Distorted waveform signal measurement
- Display with super rate LED
Model & Ordering
Specification
- Accuracy (23 + 3oC)
- 0.5% fs or 5 cts. which ever great:MWX, MWY,MWZ, MWQ,MKX,MKY,MKQ(3-3/4 digits)
- 0.25% fs + 1 count: MWX4,MWY4,MWZ4,MWQ4,MKY4,MKZ4,MKQ4 (4-1/2 digits)
- Stability
- Temperature coefficient < 60 ppm per degree C
- Long term draft < 0.2% per year
- Digits & counts
- 3-3/4 digits 3999 counts maximum, 4-1/2 digits 19999 counts maximum
- Display
- Response time
- Sample rate 1 pf per sec typically
- Input over
- Current input: 3 time rating-continuous, 10 time rating-30sec, 25 time rating-3sec
- Voltage input: maximum continuous 750V or 1.5 rating which ever great
- Frequency
- Watt version norminal + 5Hz
- Var version norminal + 0.5 hz < 0.2% change for 0.1 Hz deviated of center frequency
- Creat factor
- Normally < 3, MW.. 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 C37.90.1/1989, IEC 255-3 (1989)
- impulse voltage
- Impulse voltage 1.2 * 50 us 4 KV
- Oscillation 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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