Features
- Programmable for PT & CT ratio
- True power system design compliant : ANSI-IEEE, IEC & VED standards
- High over capability-assuring reliability
- Effective display range of 4-1/2 digits
- High accuracy of 0.25% fs
- Distorted waveform signal measurement
- Display with super rate LED
Applied rules & standards
- Measuring and conversion : IEC 688
- Dielectric strength : IEC 688
- Impulse / surge test :
- ANSI c37.90.1-1989 (3KV) SWC
- IEC 255-3 (1989)
- Adaptability power system : IEC 0110
- Measuring reliability : VDE 3540
Model & Ordering
Specification
- Accuracy (23 + 3oC) : 0.25% fs + 1 count
- Stability : Temperature coefficient < 100 ppm per oC, long term draft < 0.2% per year
- Display & resolution : 0.8" super rate LED, 4-1/2 digits 19999 counts maximum
- Response time : Sample rate 1 pf per sec typically, conversional time less 1 second
- Input over :
- Current input : 3 * rating continuous ; 10 * rating - 30 sec ; 25 * rating - 3 sec
- Voltage input : maximum continuous 750V or 1.5 rating which ever great
- Frequency : 40 ~ 70 Hz
- Programmability : PT : 1.0 ~ 1999.9 ; CT : 1.0 ~ 1999.9
- Impulse and surge :
- ANSI / IEEE C37.90.1-1989 (3KV) SWC
- IEC 61000-4-12 classIII SWC
- IEC 61000-4-4 classIV SWC
- IEC 61000-4-5 classIV Impulse
- Dielectric strength :
- 2.5KVrms / 1 minute, all terminals to reference ground (case)
- 2KVrms / 1 minute, input terminal to power terminals
- Communication port : RS-485 ; Modbus RTU protocol
- Operating condition :
- Operating temperature range -25 to 60oC, RH 0 to 95% non-condensing
- Storage temperature range -40 to 80oC, RH 20 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
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