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G71 Water-cooled High Voltage VFD
In the world of industrial automation and power systems, Liquid Cooled Variable Frequency Drives (VFDs) have emerged as a pivotal technology for high voltage AC motor control. These advanced drives provide enhanced efficiency and reliability, especially in demanding environments such as oil and gas, mining, and petrochemical industries. By integrating a sophisticated cooling system, these VFDs offer significant advantages over traditional air-cooled counterparts.
High Voltage Variable Frequency Drives (VFDs) are essential components in controlling the operation of AC motors in various industrial applications. These drives modulate the input voltage and frequency to manage motor speed and torque, offering precise control over high power systems.
High Voltage Variable Frequency Drives (VFDs) are essential components in controlling the operation of AC motors in various industrial applications. These drives modulate the input voltage and frequency to manage motor speed and torque, offering precise control over high power systems.
Critical Challenges in High-Power Motor Control
🔥Extreme Heat Dissipation Requirements
Advanced water-cooling removes 95% of heat outside the electrical room. Requires only 1 volumetric unit of water versus 3,300 units of air for equivalent cooling. Maintains full rated power even at 50°C ambient temperature. Eliminates need for expensive HVAC systems, saving $50,000-200,000 annually.
💰Excessive Energy Consumption & Operating Costs
Variable speed control reduces energy consumption by 25-45% through optimized motor operation. Water-cooling achieves 98.5% efficiency versus 96-97% for air-cooled systems—2% improvement on 5MW = 100kW saved = $80,000/year. Payback typically achieved in 18-36 months including installation.
⚙️Equipment Reliability & Downtime
Sealed water-cooled design eliminates dust ingestion—critical for mining and cement plants. No fans to fail, no filters to clean. MTBF exceeds 150,000 hours (17+ years continuous operation). Active front-end (AFE) topology provides 95%+ power factor and <3% THD, eliminating power quality problems. Reduce unplanned downtime by 70%.
📐Massive Space Requirements
Compact water-cooled design reduces footprint by 60-70%. 5MW system requires only 50-70m² floor space. Modular cabinets fit through standard doorways and elevators. Heat exchanger installed outside on roof or ground level. Ideal for brownfield retrofits with space limitations. Save $50,000-300,000 in facility costs.
🌡️Harsh Environment Operations
Water-cooled topology maintains full power rating from -40°C to +50°C ambient. No altitude derating up to 3,000m (minimal above). IP54 enclosure with sealed power cells immune to dust and humidity. Corrosion-resistant coatings for chemical plants. Proven performance in underground mines, desert environments, and arctic conditions.
🔧Complex Installation & Long Lead Times
Factory-assembled, pre-tested modules reduce on-site installation by 50%. Standardized cooling system interfaces with existing plant water supplies. Modular design allows staged installation during production windows. Remote commissioning and diagnostics reduce site time. Typical project timeline: 6-9 months order to operation. Save $150,000-400,000 in engineering and installation.
Technical Specifications of The G71 Water-cooled High Voltage VFD
| Category | Description |
|---|---|
| Model | G71 Liquid Cooling High Voltage Inverter |
| Power Range | 6kV: 6000kW - 31000kW; 10kV: 10000kW - 53000kW |
| Cooling Method | Water Cooling |
| Efficiency | >98% during rated output |
| Control Method | Two-quadrant synchronous/asynchronous motor platform |
| Competitive Advantages | High reliability, low noise, high efficiency, strong environmental adaptability |
| Load Types | Blast furnace blower, oxygen compressor, boiler induced draft fan, sintering main exhaust fan, fan, water pump |
| Output Voltage | Three-phase 0-6kV, 0-10kV |
| Waveform | SPWM sinusoidal wave |
| Input Voltage | Three-phase, 50Hz/60Hz, 6kV (10kV) |
| Voltage Fluctuation | -10% ~ +10%; Frequency: ±5%; Continuous operation under derating: -10% ~ -35% |
| Overload Capacity | 105% continuous, 130% for 1 minute, 150% for 3 seconds |
| Starting Frequency | 0-10Hz (configurable) |
| Control Accuracy | Analog: 0.3% of highest frequency; Digital: 0.02% of highest frequency |
| Resolution | Analog: 0.05%; Digital: 0.01Hz (100Hz) |
| Acceleration/Deceleration Time | 0.1 ~ 6000.0 seconds (individually configurable) |
| Protection Functions | Overcurrent, overvoltage/undervoltage, overheating, phase loss, communication failure |
| Operating Environment | Indoor, free from corrosive gases, dust, and direct sunlight |
| Temperature Range | Operating: -10°C ~ +40°C; Storage: -20°C ~ +65°C |
| Humidity | 20% ~ 90% RH (no condensation) |
| Cooling Method/IP Rating | Water cooling/IP40 |
| Applications | Power generation, petroleum, mining, metallurgy, cement, municipal, light industry, and more |
Wide Range of Applications for the G71 Water-cooled High Voltage VFD
- Mining & Minerals:SAG/Ball mill drives (3-15MW),Crusher motors (1-8MW)
- Metallurgy & Steel:Rolling mill main drives (5-20MW),Blast furnace blowers (3-10MW)
- Oil, Gas & Petrochemical:Pipeline compressor stations (3-15MW),LNG refrigeration compressors (5-25MW)
- Water & Wastewater:High-lift pumps (1-10MW),Desalination RO pumps (2-8MW)
- Cement & Building Materials:Kiln main drives (2-5MW),Raw mill grinding (1-5MW)
Expert VFD Selection and Support
Selecting the optimal VFD requires careful consideration of your motor specifications, application requirements, environmental conditions, and performance objectives. Our technical team provides comprehensive support throughout the selection and implementation process.
We assist with:
- Motor-to-drive compatibility verification
- Load profile analysis and drive sizing
- Application-specific configuration recommendations
- Installation planning and commissioning support
- Troubleshooting and technical consultation
