TES Power Harmonics and Leakage Tester PROVA 19/21/23
- Accuracy of readings for AC voltage (True RMS) up to 600V is 0.5%.
- AC current (True RMS) to 50A: PROVA 19/21 accuracy 0.5% of reading
- PROVA 23: Accuracy 0.5% of reading for AC current (True RMS) up to 100A
- PROVA 21/23: Accuracy of 2% of reading, AC watt to 9999 KW
- Active, reactive, and apparent power (W, KW, HP), according to PROVA 21/23
- PROVA 21/23: Energy, phase angle, and power factor (mWH, WH, KWH)
- PROVA 21/23: Calculation of the balanced 3-voltage power
- Measurement of a balanced three-phase sequence in PROVA 21/23
- PROVA 21/23: Evaluation of IT product standby power consumption
- Shielded Jaw is resistant to outside influence (PROVA 19/21);
- Measurement of leakage current at a resolution of 10 A
- Power without interruption and harmonic analysis
- improved comprehension of high frequency harmonic analysis (up to 5–6 KHz)
- Harmonic analysis of V and A: 1.0% basic accuracy, 1st–99th order
- Crest Factor and Total Harmonic Distortion (%THD-F) (CF)
- (39 s for 50 Hz, 33 s for 60 Hz) Fast peak function
- 1 to 250 programmable CT ratios
- Functions for Max, Min, and data hold
- H.P. active power
- 30 minute automatic power off.
- 30 mm in diameter
- Auto selection of range
Electrical Specifications: (23℃±5℃)
AC Watt (PROVA 21, 23) (50 or 60 Hz, PF 0.6~1, CT=1, Voltage is greater than AC 4V,
Current is greater than AC 1mA for mA range,and Current is greater than AC 0.04A for A range.
Specification applies to continuous waveforms)
| Range (PROVA 21: 0 to 30A)
Range (PROVA 23: 0 to 60A) |
Resolution | Accuracy of Readings |
| 0.050 – 9.999 W | 0.001W | ±2% ± 0.025W |
| 10.00 – 99.99 W | 0.01W | ±2% ± 0.25W |
| 100.0 – 999.9 W | 0.1W | ±2% ± 2.5W |
| 1.000 – 9.999 KW | 0.001 KW | ±2% ± 0.025KW |
| 10.00 – 99.99 KW | 0.01 KW | ±2% ± 0.25KW |
| 100.0 – 999.9 KW | 0.1 KW | ±2% ± 2.5KW |
| 1000 – 9999 KW | 1 KW | ±2% ± 25KW |
| Range (PROVA 21: 30 – 50A)
Range (PROVA 23: 60 – 100A) |
Resolution | Accuracy |
| 0.050 – 9.999 W | 0.001W | ±2% of VA ± 5dgts |
| 10.00 – 99.99 W | 0.01W | ±2% of VA ± 5dgts |
| 100.0 – 999.9 W | 0.1W | ±2% of VA ± 5dgts |
| 1.000 – 9.999 KW | 0.001 KW | ±2% of VA ± 5dgts |
| 10.00 – 99.99 KW | 0.01 KW | ±2% of VA± 5dgts |
| 100.0 – 999.9 KW | 0.1 KW | ±2%of VA ± 5dgts |
| 1000 – 9999 KW | 1 KW | ±2% of VA ± 5dgts |
Range of CT Ratio: 1 to 250
H.P. (Horse Power) 1 H.P. = 746 W
AC Apparent Power (VA, from 0.000VA to 9999 KVA)
VA = V r.m.s. x A r.m.s
AC Reactive Power (VAR, from 0.000 VAR to 9999 KVAR)
VAR =√(VA²– W²)
AC Active Energy (mWH, WH, or KWH, from 0 mWH to 999,999 KWH)
WH = W * Time (in hours)
AC Voltage
(Auto Range, True RMS, Crest Factor<4, Input Impedance 10 MΩ, Max. peak value 860VDC,
and Overload Protection AC 800V)
| Range | Resolution | Accuracy of Readings (50/60Hz) |
| 5V – 250 V | 0.1 V | ±0.5% ± 5dgts |
| 250 V – 600 V | 0.1 V | ±0.5% ± 5dgts |
| Range | Resolution | Accuracy of Readings (45-1KHz) |
| 5V – 250 V | 0.1 V | ±1.5% ± 5dgts |
| 250 V – 600 V | 0.1 V | ±1.5% ± 5dgts |
AC Current (Accuracy is of Reading, Auto Range, True RMS, Crest Factor<4, CT=1,
Max. peak values 880mADC for mA range, 73.5ADC for A range, Overload Protection AC 600A)
| Range | Resolution | Accuracy of Readings (50/60Hz) |
| 0.5 – 60mA | 0.01mA | ±0.5% ± 5dgts |
| 60 – 100mA | 0.01mA | ±0.5% ± 50dgts |
| 100 – 600 mA | 0.1 mA | ±0.5% ± 5dgts |
| 0.05 – 3 A | 0.001 A | ±0.5% ± 5dgts |
| 3 – 30 A | 0.01 A | ±0.5% ± 5dgts |
| 30 – 50 A (PROVA 19, 21) | 0.01 A | ±1.0% ± 5dgts |
| 30 – 100 A (PROVA 23) | 0.01 A | ±1.0% ± 5dgts |
| Range | Resolution | Accuracy of Readings (45-1KHz) |
| 0.5 – 60mA | 0.01mA | ±1.5% ± 5dgts |
| 60 – 100mA | 0.01mA | ±1.5% ± 50dgts |
| 100 – 600 mA | 0.1 mA | ±1.5% ± 5dgts |
| 0.05 – 3 A | 0.001 A | ±1.5% ± 5dgts |
| 3 – 30 A | 0.01 A | ±1.5% ± 5dgts |
| 30 – 50 A (PROVA 19, 21) | 0.01 A | ±1.5% ± 5dgts |
| 30 – 100 A (PROVA 23) | 0.01 A | ±1.5% ± 5dgts |
Harmonics of AC Voltage in Percentage (1 to 99th order, minimum voltage at 50 or 60 Hz is greater
than AC 80V. If the voltage is 0 at 50 or 60 Hz, all the percentage (%) display is 0.)
| Range (PROVA 19, 21) | Resolution | Accuracy |
| 1 – 10th | 0.1 % | ±1% of reading ±1% |
| 11 – 20th | 0.1 % | ±5% of reading ±1% |
| 21 – 50th | 0.1 % | ±15% of reading ±1% |
| 51 – 99th | 0.1 % | ±35% of reading ±1% |
| Range (PROVA 23) | Resolution | Accuracy |
| 1 – 10th | 0.1 % | ±0.7% of reading ±1% |
| 11 – 20th | 0.1 % | ±2% of reading ±1% |
| 21 – 50th (A range) | 0.1 % | ±5% of reading ±1% |
| 21 – 50th (mA range) | 0.1 % | ±10% of reading ±1% |
| 51 – 99th | 0.1 % | ±35% of reading ±1% |
Harmonics of AC Voltage in Magnitude
(1 to 99th order, minimum voltage at 50 or 60 Hz is greater than AC 80V)
| Range (PROVA 19, 21) | Resolution | Accuracy |
| 1 – 10th | 0.1 V | ±1% of reading ±7dgts |
| 11 – 20th | 0.1 V | ±5% of reading ±7dgts |
| 21 – 50th | 0.1 V | ±15% of reading ±7dgts |
| 51 – 99th | 0.1 V | ±35% of reading ±7dgts |
| Range (PROVA 23) | Resolution | Accuracy |
| 1 – 10th | 0.1 V | ±0.7% of reading ±7dgts |
| 11 – 20th | 0.1 V | ±2% of reading ±7dgts |
| 21 – 50th (A range) | 0.1 V | ±5% of reading ±7dgts |
| 21 – 50th (mA range) | 0.1 V | ±10% of reading ±7dgts |
| 51 – 99th | 0.1 V | ±35% of reading ±7dgts |
Harmonics of AC Current in Percentage
(1 to 99th order, min. current at 50 or 60 Hz is greater than 100mA for mA range, and greater than
1A for A range. If the current is 0 at 50 or 60 Hz, all the percentage (%) display is 0)
| Range (PROVA 19, 21) | Resolution | Accuracy |
| 1 – 10th | 0.1 % | ±1% of reading ±1% |
| 11 – 20th | 0.1 % | ±5% of reading ±1% |
| 21 – 50th | 0.1 % | ±15% of reading ±1% |
| 51 – 99th | 0.1 % | ±35% of reading ±1% |
| Range (PROVA 23) | Resolution | Accuracy |
| 1 – 10th | 0.1 % | ±0.7% of reading ±1% |
| 11 – 20th | 0.1 % | ±2% of reading ±1% |
| 21 – 50th (A range) | 0.1 % | ±5% of reading ±1% |
| 21 – 50th (mA range) | 0.1 % | ±10% of reading ±1% |
| 51 – 99th | 0.1 % | ±35% of reading ±1% |
Harmonics of AC Current in Magnitude (1 to 99th order, min. current at 50 or 60 Hz is greater than
100mA for mA range, and greater than 1A for A range)
| Range | Resolution | Accuracy |
| 1 – 10th | 0.01mA /
0.1mA / 0.001A / 0.01A |
reading in mA: ±1% of reading ±2mAreading in A: ±1% of reading ±0.3A |
| 11 – 20th | reading in mA: ±7% of reading ±2mAreading in A: ±7% of reading ±0.3A | |
| 21 – 50th | reading in mA: ±15% of reading ±3mAreading in A: ±15% of reading ±0.3A | |
| 51 – 99th | reading in mA: ±35% of reading ±3mAreading in A: ±35% of reading ±0.3A |
Power Factor (PROVA 21, 23)
(PF, ACV > 4V, AC mA > 1mA, AC A > 0.04A, Watt > 50 digits)
| Range | Resolution | Accuracy |
| 0.000 – 1.000 | 0.001 |
Phase Angle (PROVA 21, 23) (Φ, 50 or 60Hz)
| Range | Resolution | Accuracy |
| -180° to 180° | 0.1° | |
| 0° to 360° | 0.1° |
Frequency (Hz)
| Range | Resolution | Accuracy of Readings | Allowed Input |
| mA (45 – 65Hz) | 0.1Hz | ± 0.5Hz | 20mA to 1.2A |
| A (45 – 65Hz) | 0.1Hz | ± 0.5Hz | 1A to 100A |
Sensitivity (PROVA 19, 21): > 20mA for mA range, > 1A for A range, and > 50V
Sensitivity (PROVA 23): > 20mA for mA range, > 3A for A range, and > 50V
Total Harmonic Distortion
(THD-F with respect to the first (fundamental) harmonics, min. value in the range from 45 to 65Hz is greater
than AC 80V, greater than 1A for A range, and greater than 100mA for mA range. Calculation is done
over 1 to 50th Harmonics. If the voltage or current is 0 in the range from 45 to 65Hz, all the percentage (%) display is 0)
| Range (45~65Hz) (PROVA 19, 21) | Resolution | Accuracy |
| 0.0 – 10.0 % | 0.1% | ± 2% |
| 10.0 – 40% | 0.1% | ± 5% of reading ± 5% |
| 40 – 100% | 0.1% | ± 10% of reading ± 10% |
| 100 – 999.9% | 0.1% | ± 20% of reading |
| Range (45~65Hz) (PROVA 23) | Resolution | Accuracy |
| 0.0 – 20.0 % | 0.1% | ± 2% |
| 20.0 – 100% | 0.1% | ±3% of reading ± 5% |
| 100 – 999.9% | 0.1% | ±10% of reading ±10% |
Peak Value of AC Periodic Voltage (peak value > 10V) or AC Periodic Current
(peak value > 10mA for mA range and peak value > 0.5A for A range) for continuous waveform except for square wave:
| Range | Sampling Time | Accuracy of Reading |
| 50 Hz | 39 μs | ± 5% ± 30 digits |
| 60 Hz | 33 μs | ± 5% ± 30 digits |
Crest Factor (C.F.) of AC Voltage (peak value > 10V) or AC Current
(peak value > 10mA for mA range and peak value > 0.5A for A range) for continuous waveform except for square wave:
| Range (45~65Hz) | Resolution | Accuracy of Readings |
| 1.00 – 99.99 | 0.01 | ± 5% ± 30 digits |
General Specifications:
| Conductor Size: | 30mm (approx.) |
| Battery Type: | two 1.5V SUM-3 |
| Display: | 4+2+2 digits LCD |
| Range Selection: | Auto |
| Overload Indication: | OL |
| Power Consumption: | 10 mA (approx.) |
| Low battery Indication: | |
| Auto-Power-Off: | 30 minutes after power-on |
| Update Time: | 2 times/second (display) |
| No. Of Samples per Period | 512 (voltage or current)
256 (power) |
| Temperature Coefficient (<18℃ or >28℃): | 0.15 x (Specified Accuracy) / ℃ |
| Operating Temperature: | -10°C to 50°C |
| Operating Humidity: | less than 85% relative |
| Altitude: | up to 2000M |
| Storage Temperature: | -20°C to 60°C |
| Storage Humidity: | less than 75% relative |
| Dimension: | 210mm (L) x 62mm (W) x 35.6mm (H)
8.3″ (L) x 2.5″ (W) x 1.4″ (H) |
| Weight: | 200g (battery included) |
| Accessories: | Test leads x 1 pair,
Carrying bag x 1, Users manual x 1, Batteries 1.5V x 2 |
| Option: | Alligator clips |
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