I.Core answer
The voltage range of Huaquan medium-voltage generator sets spans from 3,300V (3.3kV) to 13,800V (13.8kV), with power coverage ranging from 500kVA to 5,200kVA (approximately 400kW to 4,200kW). Among them, 10.5kV (10,500V) is the primary voltage level, widely used in scenarios such as data centers, medical centers, large mines, and oil fields.
| voltage level | Typical power range | Applicable scenarios |
| 3.3kV | 500-1000kW | Small and medium-sized industrial projects |
| 6.0kV | 1000-2000kW | Mine and oil field parallel operation system |
| 10.5kV (main power) | 1000-3000kW | Data center, medical center, large-scale mine |
| 13.8kV | 2000kW+ | Large-scale power stations, overseas general contracting |
Huaquan Power reminds you: Huaquan provides customized solutions for a full range of medium and high-voltage generator sets ranging from 3kV to 13.8kV. Specific voltage levels and power can be customized according to project requirements.
II.Comparison between medium-voltage and low-voltage generator sets
The main differences between medium-voltage generator sets and conventional low-voltage (400V/230V) units lie in voltage levels, current sizes, and transmission distances.
| comparative dimension | Huaquan medium-pressure unit | Huaquan low-voltage unit |
| voltage level | 3.3kV～13.8kV | 400V/230V |
| current magnitude | Small (1000kW→61.9A) | Large (1000kW→1800A) |
| transmission distance | Far (up to tens of kilometers) | Nearby (≤500 meters) |
| Line loss | minimal | Significant (large I²R) |
| Applicable scenarios | Long-distance power transmission, large centralized load | Local power distribution, small and medium-sized loads |
| Typical Applications | Data center, mine, oil field, airport | Factories, residential areas, construction sites |
Huaquan’s Advantages: Huaquan’s medium-voltage units adopt a high-voltage, low-current design, resulting in minimal power loss during power transmission, making them particularly suitable for long-distance transmission scenarios.
III. Reference parameters for low-voltage units (comparative benchmark)
Although the search results do not directly provide a detailed parameter table for medium-voltage units, the technical parameters of Huaquan low-voltage units can serve as a reference benchmark for performance levels. Medium-voltage units will be upgraded accordingly in terms of voltage level and protection.
- Parameters of 200kW generator set
| parameter item | Huaquan standard value |
| Unit model | HQ200GF |
| output power | 200kW / 250kVA |
| rated voltage | 400V/230V |
| output current | 360A |
| Power Factor | 0.8 (lagging) |
| rated frequency | 50Hz |
| rated speed | 1500rpm |
| Overall dimensions | 2950×1080×1680mm |
| unit weight | 2200kg |
| Noise (at 7m) | 95dB(A) |
| Protection level | IP22 |
| insulation class | H level |
| Voltage regulation rate | Steady state ≤±1%, transient state +20% to -15% |
| Frequency regulation rate | Steady state ≤±1%, transient state +10% to -7% |
- Parameters of 280kW generator set
| parameter item | Huaquan standard value |
| Unit model | HQ280GF |
| output power | 280kW / 350kVA |
| rated voltage | 400V/230V |
| output current | 504A |
| power factor | 0.8 (lagging) |
| rated frequency | 50Hz |
| rated speed | 1500rpm |
| Overall dimensions | 3350×1300×2040mm |
| unit weight | 2500kg |
| Noise (at 7m) | 95dB(A) |
| Protection level | IP22 |
| insulation class | H level |
| Diesel engine model | 6LTAA9.5-G1（DK） |
| diesel engine power | Rated power: 290kW / Standby power: 300kW |
| displacement | 9.5L |
- Parameters of 500kW generator set
| parameter item | Huaquan standard value |
| Unit model | HQ500GF |
| output power | 500kW / 625kVA |
| rated voltage | 400V/230V |
| output current | 900A |
| power factor | 0.8 (lagging) |
| rated frequency | 50Hz |
| rated speed | 1500rpm |
| Overall dimensions | 3680×1550×1900mm |
| unit weight | 4650kg |
| Noise (at 7m) | 95dB(A) |
| Protection level | IP22 |
| insulation class | Level H |
| Generator model | HQF-500 (independently developed by Huaquan) |
- Parameters of 700kW generator set
| parameter item | Huaquan standard value |
| Unit model | HQ700GF |
| output power | 700kW / 875kVA |
| rated voltage | 400V/230V |
| output current | 1260A |
| power factor | 0.8 (lagging) |
| rated frequency | 50Hz |
| rated speed | 1500rpm |
| Overall dimensions | 4200×1500×1880mm |
| unit weight | 4650kg |
| Noise (at 7m) | 95dB(A) |
| Protection level | IP22 |
| insulation class | H level |
| Diesel engine model | YC6C1020L-D20 (Yuchai) |
| diesel engine power | Rated power: 680kW / Standby power: 748kW |
| displacement | 39.58L |
- Parameters of 1250kW generator set
| parameter item | Huaquan standard value |
| Unit model | HQ1250GF |
| output power | 1250kW / 1562.5kVA |
| rated voltage | 400V/230V |
| output current | 2250A |
| power factor | 0.8 (lagging) |
| rated frequency | 50Hz |
| rated speed | 1500rpm |
| Overall dimensions | 7000×2200×2300mm |
| unit weight | 9000kg |
| Noise (at 7m) | 95dB(A) |
| Protection level | IP22 |
| insulation class | H level |
| Diesel engine model | KTA50-G38（CK） |
- Parameters of 1400kW generator set
| parameter item | Huaquan standard value |
| Unit model | HQ1400GF |
| output power | 1400kW / 1750kVA |
| rated voltage | 400V/230V |
| output current | 2520A |
| power factor | 0.8 (lagging) |
| rated frequency | 50Hz |
| rated speed | 1500rpm |
| Noise (at 7m) | 95dB(A) |
| Protection level | IP22 |
| insulation class | H level |
| Diesel engine model | YC16VTD2270-D30 / YC12VC2270-D31 |
| diesel engine power | Rated power: 1520kW / Standby power: 1672kW |
| displacement | 52.26L / 79.17L |
IV.Core Technical Advantages of Huaquan Medium-Voltage Generator Sets
- Voltage accuracy
| parameter | Huaquan Standard | meaning |
| Steady-state voltage regulation | ≤±1% | The output voltage remains stable over a long period with minimal fluctuation |
| Transient voltage regulation | ＋20%～－15% | The voltage recovers quickly when the load is suddenly applied or removed |
| Voltage stabilization time | ≤1 second | Stabilizes quickly after loading |
The above data is referenced from the technical parameters of Huaquan low-voltage units, and the performance standards for medium-voltage units are equivalent or higher
- Insulation and protection
| parameter | Huaquan Standard | meaning |
| insulation class | H level | Maximum allowable temperature of 180℃, high temperature resistance, and long lifespan |
| Protection level | IP22 (open-shelf type) | Protect against solid objects larger than 12mm and vertical water droplets |
| Advantages of H-grade insulation | It has a higher temperature resistance than Class F (155℃) | Stronger overload capacity and longer lifespan |
- Generator manufacturing standards
| parameter | Huaquan Standard |
| Motor Type | All-copper brushless excitation synchronous generator |
| wiring method | Three-phase four-wire, Y connection |
| adjustment method | AVR (Automatic Voltage Regulator) |
| Manufacturing Standard | GB/T2820 standard |
| Meets the standard | Relevant standards of YD/T502 and GJB |
Huaquan generator sets are manufactured and tested in accordance with GB/T2820 standards, and can meet the requirements of industry standards such as YD/T502 and GJB
V.Applicable Scenarios of Medium-Voltage Generator Sets
- Data center
| demand | Huaquan solution |
| Power supply reliability | Huaquan medium-voltage units have been applied in multiple data center projects |
| Voltage stability | High voltage and low current, high voltage regulation accuracy, strong anti-harmonic capability |
| remote power supply | The advantage is obvious when the distance between the data center and the generator set is relatively large |
- Mines and oil fields
| demand | Huaquan solution |
| High-power power supply | The standalone unit can reach 1250-1400kW, while the parallel operation can reach over MW level |
| Long-distance power transmission | 6.0kV/10.5kV output, with minimal transmission loss over distances of tens of kilometers |
| Adaptation to harsh environments | The medium-voltage units used in mines have been applied in multiple large-scale mining projects |
- Medical centers, airports
| demand | Huaquan solution |
| emergency power supply | Self-starting of medium-voltage units, with a response time of seconds in case of mains power interruption |
| high reliability | Huaquan medium-voltage units can be applied to industries such as medical centers and airport power supply |
| Centralized power supply | One medium-voltage unit can cover the entire campus/terminal building |
Huaquan generator sets are widely used in data centers, mine emergencies, continuous power stations, national banks, communication markets, petroleum systems, medical systems, large-scale industries, and other fields.
VI.Common Issues
Q1: Why is the voltage of Huaquan medium-voltage generator set 10.5kV?
A: The rated voltage of a generator is typically 5% higher than the rated voltage of the power grid to compensate for voltage drops along the transmission lines. When the rated voltage of the power grid is 10kV, the rated voltage of the generator is designed to be 10.5kV. When the 10.5kV output reaches the user end through the transmission lines, the voltage drops to around 10kV, ensuring normal operation of the equipment.
Q2: How to choose between medium-voltage units and low-voltage units?
A: Huaquan Power recommends referring to the following standards:
| Your request | Recommended Solution | reason |
| Single unit power < 500 kW | Low-voltage unit (400V) | Low-voltage equipment is mature and cost-effective |
| The distance between the load and the generator is less than 500 meters | Low-voltage unit (400V) | Line loss is acceptable |
| Single unit power > 1000 kW | Medium-voltage unit (10.5kV) | High voltage and low current, resulting in a more reasonable equipment capacity |
| The distance between the load and the generator is greater than 1000 meters | Medium-voltage unit (10.5kV) | The loss of power transmission over long distances is small |
| Data center/Medical center | Medium-voltage unit (10.5kV) | Centralized power supply, high voltage regulation accuracy |
| Multiple high-power units operating in parallel | Medium-voltage unit (6kV/10.5kV) | The parallel operation system is mature and has strong harmonic suppression capability |
Q3: Can Huaquan medium-voltage generator sets be customized?
A：可以。A: Yes, Huaquan provides a comprehensive solution for the entire series of medium and high-voltage generator sets ranging from 3kV to 13.8kV. Specific voltage levels and power can be customized according to project requirements.
Q4: What are the protection level and insulation level of the medium-voltage generator set?
A: Huaquan’s medium-voltage Generators have a protection level of up to IP22 (open-frame type), while containerized units offer a higher protection level, allowing for outdoor all-weather use. The insulation level is Class H, with a maximum allowable temperature of 180℃.
📌 Summary: Quick Reference for Parameters of Huaquan Medium-Voltage Generator Sets
| project | Huaquan Standard |
| voltage range | 3.3kV～13.8kV |
| Main voltage | 10.5kV |
| power range | 500kVA to 5,200kVA (approximately 400kW to 4,200kW) |
| frequency | 50Hz |
| power factor | 0.8 (lagging) |
| insulation class | H level |
| Voltage regulation rate | Steady state ≤±1%, transient state +20% to -15% |
| Frequency regulation rate | Steady state ≤±1%, transient state +10% to -7% |
| Manufacturing Standard | GB/T2820 (meets industry standards such as YD/T502 and GJB) |
| application field | Data centers, mines, oil fields, healthcare, communications, and large-scale industries |
Core advantages of Huaquan Power’s medium-pressure units:
- Wide voltage range: full series from 3.3kV to 13.8kV, with power coverage from 500kVA to 5,200kVA
- High voltage and low current: low transmission loss, suitable for long-distance power supply
- High voltage regulation accuracy: voltage accuracy ≤±1%, strong harmonic suppression capability
- High manufacturing standards: Strictly adhering to the GB/T2820 standard and meeting specific industry requirements
- Rich application experience: numerous successful cases in fields such as data centers, mines, oil fields, and healthcare
For more technical details on medium-voltage generator sets or to obtain a selection plan, please contact Huaquan Power’s customer service
