GF333 Multifunction AC DC digital meter calibration electrical equipment
GF333 multifunction AC DC digital reference multimeter can be used as a calibration device standard meter in the laboratory, also as a testing calibrator in metrology testing center of grid corporation, power company and metrological department in power plant, national levels of metrological service, quality inspection departments, research institutes, tertiary institutions, industrial and mining enterprises, electric energy meter and electrical instrument production enterprises etc. The model GF333 high precision AC DC reference meter can test three phase ac voltage, current, phase angle, active power, reactive power, apparent power, energy, power factor, frequency and harmonic, also test DC voltage, DC current and DC power and transducer. The digital reference meter fully meet ISO17025 standard in the electrical laboratory.
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Functions & Features
- Transducer measurement;
- High accuracy up to 0.02%;
- Measure DC voltage and DC current;
- Meet IEC60736 & IR46 & ANSI C12.20-2022 standard;
- Measure calibration device of the magnetic induction;
- With RS232 interface, it can be controlled by PC operation;
- Measure calibration device the standard deviation of estimate;
- Measure calibration device of voltage, current, power stability;
- Using 6.5 inch TFT color LCD screen, character display clear chart;
- Measurement range widely from 0 to 1000V & 0 to 120A AC, 0 to 1000V & 0 to 36A DC;
- Measure the AC voltage, current 2-31 harmonic content and waveform distortion degree;
- Using the 32 bit DSP and 24 bit low power and high speed DAC consists of high accuracy AC collector;
- Measure the AC voltage, current, active power, reactive power, frequency, phase angle and power factor etc;
- Measure active power energy error, reactive power energy error, the maximum output pulse frequency is to 2 MHz;
- Have the advantages of wide measuring range, high precision, stable and reliable operation, simple operation etc.
- Measure the voltage of the calibration device three-phase symmetric degrees, the current of three three-phase symmetric degree;
Application
- Power plant;
- AMI design center;
- Energy meter R & D;
- Electrical laboratory;
- Watt-hour meter factory;
- Metrological service center;
- ISO17025 electrical laboratory;
- Electricity meter manufacturers;
- Laboratories of power utilities;
- Meter test bench integrated factory;
- Electricity power bureau & power company;
- National Metrology and testing department;
- Electrical Department of industrial and mining enterprises;
Parameters
| Electrical parameters | |
|---|---|
| Accuracy class | 0.02%, 0.05% |
| Power supply | AC 220 V±10% or 110 V±10%, 50/60Hz |
| Power consumption | <30VA |
| Warming-up time | <30min |
| Voltage measurement | |
| U1, U2,U3 | 6.25V, 12.5V, 25V, 50V, 100V, 200V, 400V, 800V (switch automatically), max 1000V |
| Range | (0-120%)RG |
| Resolution | 0.01%RG |
| Accuracy | 0.02%RD or 0.05%RD |
| Current measurement | |
| I1, I2, I3 | 0.25, 0.5, 1, 2.5, 5, 10, 25, 50, 100A(switch automatically) |
| Range | (0-120%)RG |
| Resolution | 0.01%RG |
| Accuracy | 0.02%RD or 0.05%RD |
| Power measurement | |
| Active accuracy | 0.02%RD or 0.05%RD |
| Reactive accuracy | 0.05%RD or 0.1%RD |
| Apparent accuracy | 0.02%RD or 0.05%RD |
| Energy measurement | |
| Active accuracy | 0.02%RD or 0.05%RD |
| Reactive accuracy | 0.05%RD or 0.1%RD |
| Phase measurement | |
| Range | 0.00°-359.99° |
| Resolution | 0.001° |
| Accuracy | 0.02° (voltage ≥50V and current ≥250mA) |
| Frequency measurement | |
| Range | 45-65Hz |
| Resolution | 0. 001Hz |
| Accuracy | 0.001Hz |
| Power Factor measurement | |
| Range | -1.00000 ~ 0 ~ +1.00000 |
| Resolution | 0.0001 |
| Accuracy | 0.0005 |
| Electric energy pulse output | |
| Pulse constant range | 1-2880000000 |
| Output frequency of max. pulse | 600 kHz |
| Load capacity | >2mA |
| Default pulse output frequency | 10kHz-600kHz |
| Energy pulse Input | |
| Input range of pulse constant | 600-700000 |
| Setting range of test pulse | 1-999999999 |
| Max. pulse receiving frequency | 2MHz |
| Pulse input level | 5V |
| Voltage/current harmonics measurement | |
| Times | 2-31 |
| Error | 0.05% |
| Distortion degree error | 0.05% |
| Transducer measurement | |
| DC voltage range | ±1, ±5, ±10, ±20 V |
| Accuracy | 0.01% |
| DC current range | ±1, ±2.5, ±5, ±10, ±20mA |
| Accuracy | 0.01% |
| Ripple error | 1% |
| DC measurements (option) | |
| DC voltage | 50V, 100V, 200V, 400V, 800V (switch automatically), max 1000V |
| Range | (0 -120%) RG |
| Resolution | 0.01% RG |
| Accuracy | 0.02% RD |
| DC current | 0.1A, 0.3A, 1A, 3A, 10A, 30 A(switch automatically) |
| Range | (0-120%) RG |
| Resolution | 0.01% RG |
| Accuracy | 0.02% RD |
| Function | |
| LCD Display | 6.5 inch color disply |
| Vector diagram | Yes |
| Waveform | Yes |
| Energy accumulation | Yes |
| Harmonics measurement | Yes |
| Distortion degree | Yes |
| Self-calibration | Yes |
| Data storage | Yes |
| Keys | Yes, 18pcs |
| PC software | Optional |
| Communication port | RS232 |
| Standard | |
| Standard | IEC 62053-21,22, 23; IEC 60736; IR46; ANSI C12.20-2022; JJG 597-2005; JJG596-2012; JJG 1085-2013; JJF 68-2019; DL/T 826-2002; DL/T 1478-2015; DL/T 448-2016 |
| Safety | |
| Isolation protection | IEC 61010-1:2001 |
| Measurement Category | 300 V CAT III, 600 V CAT II |
| Degree of protection | IP40 |
| Declaration of conformity | CE & CNAS certified |
| Mechanical parameters | |
| Dimensions (W×H×D) (mm) | 440×360×160 |
| Weight (kg) | 10 |
| Environmental conditions | |
| Operating temperature | 10°C to 30°C |
| Storage temperature | -20°C to 65°C |
| Relative humidity | ≤85% |
| Influence of external fields | ≤0.05 %/mT |
| Temperature coefficient | ≤0.0005% /℃ |
