Technical Data P44x/EN TD/E33
MiCOM P441/P442 & P444
Page 9/30
3. ACCURACY
For all accuracies specified, the repeatability is ±2.5% unless otherwise specified.
If no range is specified for the validity of the accuracy, then the specified accuracy shall be
valid over the full setting range.
3.1 Reference Conditions
Quantity Reference conditions Test tolerance
General
Ambient temperature
20 °C ±2°C
Atmospheric pressure 86kPa to 106kPa -
Relative humidity 45 to 75 % -
Input energising quantity
Current
In
±5%
Voltage Vn
±5%
Frequency 50 or 60Hz
±0.5%
Auxiliary supply DC 48V or 110V
AC 63.5V or 110V
±5%
3.2 Measurement Accuracy
Quantity Range Accuracy
Current
0.1 to 64
In
10mA or ±1%
Voltage 1.0 Vn
±1%
Frequency 45 - 65Hz
±0.025Hz
Phase
0 - 360° ±2°
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