Elgar SmartWave SW1750A, Operation Manual

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General Description SW 5250A•SW 3500A•SW 1750A
1-6 Operation Manual
1.5.2 Measurement Capabilities and Accuracies
1.5.2.1 Measurement Capability
4½ Digit Analog to Digital Measurement System
Temperature Range for Specified Accuracy
:
25°C ±5°C.
Operating Temperature Range
:
0°C to 45°C (32°F to 113°F).
1.5.2.2 Phase to Neutral RMS Voltage Measurement
Valid for phases A, B and C (use phase A for Parallel Mode).
Range
:
0V to 350.0V, plus sign bit for DC mode.
Accuracy
:
±0.3% of range, DC or 47 Hz to 1 kHz;
±0.5% of range, 40 to 47 Hz and for 1 kHz to 5 kHz.
Temperature Coefficient : ±200 ppm/°C outside specified range.
1.5.2.3 Phase to Phase RMS Voltage Calculation
Calculated from Phase to Neutral voltages and phases.
Range : 0V to 700V.
Accuracy and Temperature Coefficient: Same as for the Phase to Neutral voltage
(see paragraph 1.5.2.2 above).
1.5.2.4 RMS Current Measurement
Valid for phases A, B, and C (use phase A for Parallel Mode).
Range 1
:
0A to 7.5A, plus sign bit for DC mode; 3-phase mode, 312V range.
Range 2
:
0A to 15A, plus sign bit for DC mode; 3-phase mode, 156V range.
Range 3
:
0A to 22.5A, plus sign bit for DC mode; parallel mode, 312V range.
Range 4
:
0A to 45A, plus sign bit for DC mode; parallel mode, 156V range.
Accuracy
:
±1.0% of range, DC or 40 Hz to 500 Hz; add ±1.5%/kHz above 500 Hz.
Accuracies are specified for a maximum crest factor of 4.0.
Temperature Coefficient
:
±300 ppm/°C outside specified range.