TH3350 Three-phase Low Current
Power Energy Standard Meter
1. Summary
TH3350 is a three-phase AC power energy measurement standard with wide frequency and low current accuracy. It operates within broadband of 40 Hz to 1 kHz, allowing for precise measurement down to 20μA, and a maximum current measurement capability of 120mA. This addresses the significant shortcomings of traditional energy meters in terms of broadband and low current measurement capabilities. It provides a new means of measurement and analysis to meet the measurement requirements of R46 directives. It offers optional accuracy class of 0.005 and 0.01 for energy measurement.
2. Features
- Measuring Range: voltage: 6 V~528 V, current: 0.02 mA~ 120 mA, frequency: 40 Hz~1 kHz
- Multifunctional Energy Measurement: It has forward, reverse and reactive power/electric energy, and supports the calibration of electric energy meters.
- Harmonic Function (optional): It can measure the amplitude and phase of harmonics from 2nd to 127th, and complete the harmonic impact test.
3. Specifications
3.1 AC Voltage
| Measuring Range |
Resolution |
Measurement Uncertainty at Different Frequencies (Hz) ( k = 2 ) ( ppm*RD + ppm*RG ) |
| Class 0.005 |
Class 0.01 |
| 40 ≤ F ≤ 65 |
65 < F ≤ 400 |
40 ≤ F ≤ 65 |
65 < F ≤ 400 |
| 60 V |
0.01 mV |
12 + 8 |
20 + 10 |
25 + 15 |
30 + 20 |
| 120 V |
0.1 mV |
12 + 8 |
20 + 10 |
25 + 15 |
30 + 20 |
| 240 V |
0.1 mV |
12 + 8 |
20 + 10 |
25 + 15 |
30 + 20 |
| 480 V |
0.1 mV |
12 + 8 |
20 + 10 |
25 + 15 |
30 + 20 |
- Measuring range:6 V~528 V,automatic/manual range, 7-digit display
- Data refresh rate: (0.05~5) times/S
3.2 AC Current
| Measuring Range |
Resolution |
Measurement Uncertainty at Different Frequencies (Hz) ( k = 2 ) ( ppm*RD + ppm*RG ) |
| Class 0.005 |
Class 0.01 |
| 40 ≤ F ≤ 65 |
65 < F ≤ 400 |
40 ≤ F ≤ 65 |
65 < F ≤ 400 |
| 0.2 mA |
0.1 nA |
25 + 15 |
40 + 25 |
40 + 25 |
50 + 30 |
| 0.5 mA |
0.1 nA |
25 + 15 |
40 + 25 |
40 + 25 |
50 + 30 |
| 1 mA |
1 nA |
20 + 10 |
25 + 15 |
30 + 20 |
40 + 25 |
| 2 mA |
1 nA |
20 + 10 |
25 + 15 |
30 + 20 |
40 + 25 |
| 5 mA |
1 nA |
20 + 10 |
25 + 15 |
30 + 20 |
40 + 25 |
| 10 mA |
10 nA |
20 + 10 |
25 + 15 |
30 + 20 |
40 + 25 |
| 20 mA |
10 nA |
20 + 10 |
25 + 15 |
30 + 20 |
40 + 25 |
| 50 mA |
10 nA |
20 + 10 |
25 + 15 |
30 + 20 |
40 + 25 |
| 100 mA |
100 nA |
20 + 10 |
25 + 15 |
30 + 20 |
40 + 25 |
- Measuring range:0.02 mA~120 mA,automatic/manual range, 7-digit display
- Data refresh rate: (0.05~5) times/S
3.3 Frequency / Phase / Harmonic
| Frequency |
Measuring Range |
40.000 0 Hz~1000.000 Hz |
| Minimum Resolution |
0.000 1 Hz |
| Measurement Uncertainty(k=2) |
0.005%*RD |
| Phase |
Measuring Range |
0.000 0°~ 359.999 9° |
| Minimum Resolution |
0.000 1° |
| Measurement Uncertainty(k=2) |
0.001° |
| Harmonic |
Measurement times |
2~127 |
| Amplitude |
0~100% |
| Phase |
0.000°~359.999° |
3.4 Power/Energy Measurement
| Measured Power |
Voltage Range |
Current Range |
Measurement Uncertainty
(45Hz~65Hz,k=2) |
| Class 0.005 |
Class 0.01 |
Active Power/ Energy
Apparent Power
|cosj| ≥ 0.5 |
30 V ≤ U ≤ 480 V |
0.05 mA ≤ I 1 m A |
0.005%*FS |
0.01%*FS |
| 1 mA≤ I < 100 mA |
0.005%*RD |
0.01%*RD |
Reactive Power
|sinj| ≥ 0.5 |
30 V ≤ U ≤ 480 V |
0.05 mA ≤ I 1 m A |
0.01%*FS |
0.02%*FS |
| 1 mA≤ I < 100 mA |
0.01%*RD |
0.02%*RD |
| Power Factor |
30 V ≤ U ≤ 480 V |
0.05 mA ≤ I 1 m A |
0.01% |
0.02% |
| 1 mA≤ I < 100 mA |
0.005% |
0.01% |
| Note: FS =Voltage range value × current range value |
- Power/energy measurement range: Combination of AC voltage range and AC current range
- Power factor measurement range: -1.000 00…0.000 00…1.000 00
- Standard energy pulse output: high frequency full range value corresponds to 60 kHz, low frequency full range value corresponds to 6 Hz
- Standard power pulse input: frequency ≤ 200 kHz, voltage: 0…3.3 V…24 V
- Energy error display: automatic, resolution 0.0001%
4. General Specifications
| Power Supply |
AC ( 220 ± 22 ) V,( 50 ± 2 ) Hz |
| Warm up time |
30 minutes |
| Temperature Performance |
Operating temperature: 15°C~30°C;
Storage temperature:-10°C~55°C |
| Humidity Performance |
Working humidity:< 80% @ 30°C,< 70% @ 40°C,< 40% @ 50°C
Storage humidity: (20%~80%) R·H,No condensation |
| Communication Interface |
RS232,LAN,USB |
5. Ordering Information
Company Profile
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