Valhalla Scientific, Inc.
Model 2330A Power Analyzer Specifications
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1-1.Voltage Specifications
The accuracy figures given below are valid following a 1 hour warm-up period at the
calibration temperature ±5°C. Figures are valid for a period of one year from the date of
calibration.
1-1-1.Voltage Ranges and Resolutions
Ranges: 50V 150V 300V 600V
Resolution: <User-selectable at 4, 5 or 6 digits>
1-1-2. Voltage Accuracy and Bandwidth
True RMS, DC coupled (AC+DC):
DC: ±0.2% of reading ±0.2% of range
30Hz to 5kHz: ±0.1% of reading ±0.1% of range
5kHz to 15kHz: ±0.5% of reading ±0.25% of range
15kHz to 20kHz: ±0.75% of reading ±0.5% of range
Useable above 20kHz to 100kHz with typically an additional 1% error per 10 kHz.
1-1-3. Miscellaneous Voltage Specifications
Temperature Coefficient: ±10% of accuracy specification per °C
Crest Factor: 50:1 at minimum input linearly decreasing to 2.5:1 at full scale
Minimum Input: 5% of range
Maximum Input: ±1500V peak
Peak Indicator: Illuminates at 2.5 times range, or above the max RMS input for range
Input Impedance: 1MΩ (All Ranges)
1-2.Current Specifications
The accuracy figures given below are valid following a 1 hour warm-up period at the
calibration temperature ±5°C. Figures are valid for a period of one year from the date of
calibration.
1-2-1.Current Ranges, Resolution and Bandwidth
Ranges: 0.2A, 0.5A, 1A 2A, 5A, 10A 20A, 50A, 100A
Resolution: <User-selectable at 4, 5 or 6 digits>
Impedance:
Bandwidth: DC & 30Hz-10kHz DC & 30Hz-5kHz DC & 30Hz-1kHz
Max Input: 2A continuous 20A continuous 150A continuous
Peak Input:
(no damage)
1-2-2. Current Accuracy
True RMS, DC coupled (AC+DC):
DC: ±0.50% of reading ±0.5% of range
30Hz to Bandwidth: ±0.25% of reading ±0.25% of range
(Shunt Dependant)
1-2-3. Miscellaneous Current Specifications
Temperature Coefficient: ±10% of accuracy specification per °C
Crest Factor: 50:1 at minimum input linearly decreasing to 2.5:1 at full
Minimum Input: 5% of range
Peak Indicator: Illuminates at 2.5 times range, or above maximum RMS
Shunt Compliance Voltage: 100mV at full scale on highest range for shunt (1A, 10A,
100A)
Low Shunt Medium Shunt High Shunt
100mΩ 10mΩ 1mΩ
100msec @5A
(fused)
scale
input for range
100msec @50A 100msec @500A
1-3.Power Specifications
The accuracy figures given below are valid following a 1 hour warm-up period at the
calibration temperature ±5°C. Figures are valid for a period of one year from the date of
calibration.
2-3-1. Power Accuracy and Bandwidth
True RMS, DC coupled (AC+DC):
DC: ±0.50% of volts x amps readings ±0.50% of volts x amps ranges
30Hz to Bandwidth: ±0.25% of volts x amps readings ±0.25% of volts x amps ranges
(Shunt Dependant)
Bandwidth: DC and 30Hz to 10kHz (low shunt)
DC and 30Hz to 5kHz (medium shunt)
DC and 30Hz to 1kHz (high shunt)
Temperature Coefficient: ±10% of accuracy specification per °C
Power Factor Response: 0.01 to unity (1.000) power factor, leading or lagging
Power Factor Accuracy: ±0.005PF from 30Hz to 1000Hz
±0.010PF from 1kHz to 5kHz
±0.050PF from 5kHz to 10kHz
Phase Accuracy: Phase shift is a calculated value based on the V-A-W readings.
Accuracy is equal to the combined uncertainties for voltage,
current, and power. Typical phase accuracy is ±1° to 5kHz.
1-4. Physical Specifications
Height: 7" (178mm) not including feet
Width: 17" (432mm)
Depth: 19.75" (490mm)
Weight: 26 lbs (12kg) net; 31 lbs (14.5kg) shipping
1-5. Environmental Specifications
Temperature Range: Operating: 0°C to 50°C
Storage: -20°C to +75°C
Humidity: 70% RH max @ 40°C (non-condensing)
Power: 50 to 60Hz @ 105-125VAC or 210-250VAC; 60VA max
1-6. Miscellaneous Specifications
Settling Time (to within 0.05% of change):
No range change: 1.5 sec
Following range change: 5 sec
Maximum Common Mode Voltage: 1500V peak from any terminal to chassis
Input Configuration: Three-wire type wattmeter with three current inputs for each phase
Display Type: Vacuum-fluorescent, 4 rows, 42 characters per row
A-to-D Converter Resolution: 20 bit (1 million counts)
A-to-D Converter Conversion Rate: 212ms
Frequency counter response: 0.2Hz to 52kHz
Frequency counter accuracy: > 1Hz = ±0.01% of frequency ±250ns
< 1Hz = ±0.1% of frequency ±16.8ms
1-7.Performance Verification
Performance of the Model 2330A may be verified at any time, and is recommended
following receipt of the unit or following transportation. Verification may be achieved with
two levels: verified as operational; verified as operational and within specifications. The
procedures for both follow.
1-7-1.Verification of Operation
If the 2330A fails any of the tests that follow, employ normal troubleshooting procedures or
consult the factory for advice.
1) Ensure that the POWER switch (lower left hand corner of the front panel) of the 2330A
is in the OFF position.
2) Ensure that the rear panel switch is set to the correct local line voltage and apply AC
power to the 2330A. Make no connections to the shunt input terminals under the fliplid.
3) Press the 2330A POWER switch to the ON position. The 2330A should come to life
and introduce itself to the user.
4) Allow the 2330A to warm up for 15 minutes.
5) Connect the 2330A as described in Section 6-4-1 to a known resistive load, e.g. a 100watt incandescent light bulb. Verify that the voltage display reads the present line
voltage, the current display reads approximately 1 amp, and the power display reads
approximately 100 watts. This should be repeated for each of the 3 channels: φA, φB
and φC.
After successful completion of all of the steps above, the 2330A is fully operational with no
faulty parts apparent.
1-7-2.Verification of Specification
Attempting to prove that the 2330A is performing to specification requires that the user be
aware of the following points:
1) The specifications in Section 2 are valid for reasonable use of the 2330A during the
specified period of time. If the 2330A has been transported it may have been subjected
to extremes of temperature. As with any precision equipment some change in
calibration may occur due to this. This effect has been carefully monitored by Valhalla
Scientific and has been found to be small, even in extreme cases.
2) A wattmeter calibration system is required to verify the specifications of the 2330A. A
source of voltage and current in phase with each other is required to check the power
accuracy. Phase shifts between voltage and current will cause measurement errors. The
calibration procedure of Section 8 may be used as a guide for verifying specifications.
3) Prior to specification verification it is recommended that the user be familiar with the
manual operation of the 2330A and allow at least one hour for the unit to warm up.
If the 2330A is found to be fully operational but not performing to specifications it is
recommended that a full calibration be performed. If this does not bring all points within
specifications, contact your nearest Valhalla Scientific Service Center before returning the
unit for repair or attempting to repair the unit yourself.
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