Phasor representation of all 3 phases for system analysis.
Energy class 0.5s as per standard IEC 62053-22.
True representation of voltage & current waveforms.
Real Time Clock (RTC) .
Harmonic upto 56th at 50Hz,in this mentioned frequency @50Hz.
Time of use with configurable zones, seasons & tariff profiles which helps energy analysis .
Graphical Touch Screen LCD.
Application:
ALPHA 70A+ is a compact, multi-function panel mount power quality monitor, which measures, calculates a displays major electrical parameters of three phase power system like voltage, current, active/ fundamental reactive, apparent power and energy, individual harmonics,
sags and swells.
Input Voltage
Nominal input voltage (AC RMS): 57.7-288.68VL-N On site programmable (Line-Line 100-500 VL-L).
System PT primary values: 100VLL to 692.8 kVLL On site programmable.
Max continuous input voltage: 347 VLN, 600 VLL.
Voltage Measuring Range: 5 VLN.... 347 VLN, 9 VLL .. 600 VLL.
Overload Withstand: 2x times of Nominal voltage for 1 second, repeated 10 times at 10 second intervals.
Frequency Measuring Range: 45Hz to 66Hz.
Input Current
Nominal input current (AC RMS): 1A/5A On site programmable.
System CT primary values: 1A up to 9999A On site programmable.
Max continuous input current: 120% of rated value.
Current Measuring Range: 5% to 120% of Nominal current.
Overload Withstand: 20x times of Nominal current for 1 second, repeated 5 times at 5 min intervals.
Starting Current for energy as per IEC 62053-22 class 0.5S: 1 mA for 1A range, 5 mA for 5A range.
Auxiliary Supply
External Aux: 60 V – 300V 45-66Hz AC/DC .
Higher Aux Nominal Value: 230 V DC /230 V AC, 50-60 Hz.
Frequency: 50/60 Hz (+ 10%).
Environmental
Operating temperature: -20 to +70°C.
Storage temperature: -30 to +80°C.
Relative humidity: 0... 95% non condensing.
Warm up time: Minimum 3 minute.
Shock: 15g in 3 planes.
Vibration 10... 150...10 Hz, 0.075mm amplitude .
Temperature Coefficient: 0.05%/°C.
