LQ-930 Three-Phase Programmable Power Supply | High-Precision Test Source
Industrial-Grade Precision Power Source
The LQ-930 represents the pinnacle of programmable three-phase power supply technology, combining 1.2GMAC DSP processing with military-grade components to deliver metrology-standard outputs. Designed for calibration laboratories, power utilities, and electrical equipment manufacturers requiring <0.1% THD purity.
Technical parameters
| Ac output | Adjust the fineness of | 0.05%RG |
| The accuracy of | Better than ±0.1%RG | |
| stability | Better than ±0.03%RG/1min | |
| The distortion degree of | Greater than 0.1%(non-capacitive load) | |
| The output power | Rated at 15VA per phase | |
| Full load adjustment rate | Less than ±0.03%RG | |
| Full load adjustment time | Less than1mS | |
| Output range | 0V～420V | |
| Gear set | 0V～140V 、140V～280V 、280V～420V ，Automatic gear switching | |
| Temperature drift | ±15PPM/℃ | |
| Long-term stability | ±100PPM/years | |
| Ac current output | Adjust the fineness of | 0.05%RG |
| The accuracy of | Better than ±0.1%RG | |
| stability | Better than ±0.03%RG/1min | |
| The distortion degree of | Greater than 0.1%(non-capacitive load) | |
| The output power | Rated at 15VA per phase | |
| Full load adjustment rate | Less than ±0.03%RG | |
| Full load adjustment time | Less than 1ms | |
| Output range | 0A、1mA～10A(20A) | |
| Gear set | 0A～0.2A、0.2A～1A、1A～5A、5A～10A，Automatic gear switching | |
| Can be customized | 0～1A、1A～5A、5A～10A、10A～20A，Automatic gear switching | |
| Temperature drift | ±15PPM/℃ | |
| Long-term stability | ±100PPM/years | |
| The power output | The accuracy of | Better than 0.1%RG |
| stability | Better than 0.03%/1min | |
| phase | The adjusting range is | 0 ~ 359.99 degrees |
| The resolution of the | 0.02 degrees | |
| The accuracy of | ±0.05 degrees | |
| frequency | The adjusting range is | 40Hz～65Hz |
| The resolution of the | 0.005Hz | |
| The accuracy of | ±0.005Hz | |
| Temperature drift | ±1PPM/℃ | |
| Long-term stability | ±4PPM/years | |
| Power factor | The adjusting range is | -1～0～+1 |
| The resolution of the | 0.05% | |
| The accuracy of | 0.1% | |
| Working power supply | 220 V，AC50Hz ±5% | |
| Harmonic output | The HT3050 three-phase programmable precision test power supply can accurately output 2 ~ 22 harmonics, which can be combined and superimposed at any time. However, the sum of the total harmonic content in the output harmonic should not exceed the limit listed in the table below. | |
The carrying capacity of the HT3050 will be reduced by half during harmonic output. For reliable and accurate harmonic output, please ensure that the load does not exceed one half of the rated value.Especially the voltage output, because the voltage output is often used as the power supply of the device under test, the power consumption on it will be larger. | ||
| Overall dimensions | 480*330*680mm3 | |
| The weight of the | 31.6kg | |
Core Technologies
Processing Architecture
32-bit MCU + DSP dual-processor system
Large-scale FPGA for waveform generation
50,000-point/week waveform sampling
Output Performance
Frequency range: 40Hz-65Hz (±0.005Hz)
Phase adjustment: 0-360° independent control
Harmonic superposition capability
Key Differentiators
Military-Grade Stability: 1PPM temperature coefficient ensures field accuracy
Hardware PID Control: Instant response to load changes (zero fluctuation)
Phase-Independent Control: Phase C operates as separate frequency reference
Harmonic Testing: Pure fundamental wave with programmable harmonic injection
Typical Applications
Meter Calibration
Verification of voltage/current/power meters to 0.1% accuracy
RTU/FTU Testing
Automated factory testing of remote terminal units
Power Quality Analysis
Harmonic distortion testing with pure signal baseline
Smart Grid Equipment
Calibration of transformer metering terminals
Operational Features
PC software integration for automated meter testing
Secondary development support via open communication protocol
Capacitive load compatible (pure reactive testing)
Three-phase imbalance simulation capability
