| General Specifications |
| Accuracy ( 23±3°C ) |
0.2% reading / PF ± 0.05% RO |
| Maximum output load |
DC current mode : maximum 10V drop
DC voltage mode : maximum 5mA drive |
| Output of WH & VarH: |
Open collecter type, maximum 30V / 30mA |
| Dielectric strength |
AC 2KV 1 minute between terminals; AC 2.6KV 1 minute / terminals to case |
| Surge and impulse test |
ANSI C37.90/1989, IEC 255-3(1989)
4 KV 1.2 x 50 us |
| Maximum input over: |
| Current related input |
|
Voltage related input |
1A / 5A
4 x rated / continuous
10 x rated / 10 seconds
50 x rated / 1 second
80 x rated / 0.5 second |
10A
2 x rated / continuous
25 x rated / 1 second
50 x rated / 0.5 second
|
1.5 x rated / continuous
2 x rated / 10 seconds |
| Input burden |
Current less 0.2 VA; voltage less 0.1 VA |
| Response time & ripple |
≤400 ms for step change 0-99% ripple less 0.5% ro peak to peak |
| Frequency |
50 ± 2 Hz; 60 ± 2 Hz; 400 ± 5 Hz ( Watt only ) |
| Waveform |
Watt - 2% 3rd, Var - sinusoidal |
| Stability |
| Temperature range ( 20 to 26°C ) long term stability / year |
Maximum 60 ppm / °C less 0.2% draft / year typically ....... Watts
Maximum 70 ppm / °C less 0.2% draft / year typically ....... Vars |
| Storage condition |
Temperature range -25 to 70°C, RH 20 to 95% non condensed |
| Operating condition |
Temperature range -20 to 65°C, RH 0 to 99% non condensed |
| Magnetic field effect |
< 0.01% under 100 ampere turns at 1M center |
| Power dissipation |
< 7 VA |
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