Description
The PROVA 19/21/23 Power Harmonics and Leakage Tester is a high-precision instrument designed for both single-phase and balanced three-phase systems. It provides detailed analysis of voltage and current harmonics up to the 99th order, enabling accurate monitoring of power quality and energy consumption in industrial and commercial applications.
With true RMS measurements (voltage up to 600V, current up to 100A), it ensures accuracy even under non-linear loads. The device features an LCD display (4+2+2 digits) for clear visualization of voltage, current, power, and harmonic information. It logs transient events, measures active, reactive, and apparent power, energy, phase angle, and power factor, and supports programmable CT ratios from 1 to 250.
Compact and portable, the PROVA 19/21/23 operates on two 1.5V batteries, features a 30-minute auto power-off, and is suitable for field use under temperatures from -10°C to 50°C and relative humidity below 85%.
Specifications
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 |
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 |
