GF312D Handheld Three Phase Standard Reference Meter
The Three Phase Reference Standard Meter (GF312D) is portable meter test equipment from GFUVE Electronics. The main objective of this device is to calibrate the errors for three phase & single phase energy meters i.e. the meter under test (MUT). The GF312D supports both static and electro-mechanical types of energy meters. It can also be used to measure the voltage, current, power, energy, power factor, harmonic etc of the meter under test. It has an 6 inch color LCD display, 24pcs keys that makes it easy for the user to operate the GF312D reference meter. It can be interfaced with the PC for data management analysis. It has the capability of storing test results.
The reference standard meter supports various current modes for checking energy meter error. The high accuracy (0.05) mode operates for direct current up to 20A. The clamp on CTs mode accuracy is better than 0.2 class. It can also be used to determine the current transformer ratio when tested simultaneously on the primary and secondary sides. It also supports flexible current probe for very high currents like 2000A or 3000A.
Features and Functions
- Display vector diagram;
- Measure CT variable ratio;
- Display waveform of U and I;
- Store and display measured data;
- Measure frequency of power line;
- wide range of measurement and high veracity;
- Measure phase angle between voltage and current;
- Measure U(voltage) of three phase or single phase;
- Measure I(current) of three phase or single phase;
- Analyze and display content of harmonic of U and I;
- Measure power factor of three phase or single phase;
- make the instrument can continuously work up to 10 hours;
- Measure active power of three phase or single phase;
- Measure reactive power of three phase or single phase;
- Measure apparent power of three phase or single phase;
- Measure the ratio or lag-angle of low-voltage transformer;
- Testing Three phase active or reactive electricity energy meter;
- Optional 5A, 20A, 100A, 200A, 500A, 1000A, 2000A, 3000A current clamp;
- Calibrate three phase, single phase, active or reactive meter error;
- Adopt 32 bit ARM processor, multi-channel 16 bit precision A/D convertor, high resolution TFT color LCD;
- Inner equipped with 0.01% wide-range current transformer and can be equipped with various type current clamps, wide range of measurement and high veracity.
- Low consumption circuit design, high energy Li batter supply, intellectual power management software, which make the instrument can continuously work up to 10 hours.
Parameters
| Electrical parameters | |
|---|---|
| Accuracy class | 0.05%, 0.1%, 0.2% |
| Resolution | 6”TFT (640×480) |
| Power supply | 220V±10%, 50/60Hz Li-polymer battery (size (mm): 110x51x16, nominal output voltage: 7.2V, capacity: 5000mAh) Power line supply (U1, UN), 85V-265V 50/60Hz |
| Communication port | RS232, USB |
| Test voltage | |
| Range | 0-480V |
| Error | ±0.05% (30V-480V) ±0.1% (0V-30V) |
| Harmonic | 2nd-63st |
| Test current | |
| Range (direct connection) | 1mA-20A |
| Error (direct connection) | ±0.05% (100mA-20A) ±0.1% (10mA-100mA) |
| Range (clamp CT) | 10mA-3000A |
| Clamp CTs optional | 5A, 100A, 200A, 500A, 1000A, 2000A, 3000A |
| Error (camp CT) | ±0.2% (100mA-100A) ±0.5% (100A-3000A) |
| Harmonic | 2nd-63st |
| Power measure error | |
| Active power (direct connection) | ±0.05% (0.1A-20A) ±0.1% (0.01A-0.1A) |
| Reactive power (direct connection) | ±0.1% (0.1A-20A) |
| Energy measure error | |
| Active energy (direct connection) | ±0.05% (0.1A-20A) ±0.1% (0.01A-0.1A) |
| Reactive energy (direct connection) | ±0.1% (0.1A-20A) |
| Phase angle | |
| Range | 0°-360° |
| Resolution | 0.01° |
| Error | ±0.05° |
| Frequency | |
| Range | 45-65Hz |
| Resolution | 0.001Hz |
| Error | 0.002Hz |
| Pulse input | |
| Input channel | 2 |
| Input level | 5-24V |
| Input frequency | Max. 2MHz |
| Pulse output | |
| Energy constant | 180000imp/kWh, 1800imp/kWh, 180imp/kWh |
| Pulse ratio | 1:1 |
| Output level | 5V |
| Function | |
| Vector diagram | Yes |
| Waveform | Yes |
| Energy accumulation | Yes |
| Test meter Type | 1P2W, 1P3W, 3P3W, 3P4W |
| CT ratio test | Yes |
| CT PT programmable | Yes |
| Check wiring | Yes |
| smart optical sampler | 1PC |
| Data storage | 500sets |
| Communication with PC | Yes |
| Mechanical parameters | |
| Instrument dimensions (W×H×D) (mm) | 220×138×61 |
| Instrument Weight (kg) | 1.7 |
| Carry case dimensions (W×H×D) (mm) | 450×320×185 |
| Carry case (kg) | 8.5 |
| Environmental conditions | |
| Ambient temperature | -10°C to 55°C |
| Relative humidity | 15%-85% |
| The Height of above sea level | ≤3000m |
