Products Overview
RENLE water cooled VFDs deliver ultra-reliable, high-efficiency motor control in the toughest environments. Their sealed design resists dust, moisture, and high ambient temperatures (up to 50°C), ensuring stable operation in harsh settings like mining, metallurgy, and paper mills.
Offering superior cooling, near-silent operation (<65 dB), and significant system-wide energy savings by eliminating internal heat emission, they are the ideal solution for high-power, space-constrained, and environmentally sensitive applications.
Products Features
1. Superior Cooling Efficiency & Higher Power Density
Efficient Heat Dissipation: The thermal conductivity of water is approximately 25 times that of air, giving water cooling systems far greater cooling capacity. They can remove heat generated by internal power components (e.g., IGBTs) more quickly and effectively.
Compact Design: Due to their high cooling efficiency, water-cooled VFDs can be designed with a smaller footprint than air-cooled models of equivalent power, saving valuable installation space and achieving higher power density.
2. Enhanced Environmental Adaptability & Reliability
Dust and Contaminant Resistance: Utilizing a fully sealed cooling circuit, key internal electronic components are isolated from the external environment, completely eliminating the risk of ingress from dust, fibers, oil mist, corrosive gases, etc. This is crucial in harsh industrial settings like paper mills, textiles, mining, and metallurgy.
Resistance to High Ambient Temperatures: Their cooling performance is largely unaffected by surrounding air temperature. They can maintain stable full-load operation even in workshop environments as high as 40-50°C, whereas air-cooled VFDs might require derating under such conditions.
High Protection Rating: Typically, the entire unit achieves a protection rating of IP54 or higher, making it suitable for installation in challenging field conditions.
3. Lower Noise & Improved In-Plant Environment
No Large Cooling Fans: By eliminating high-speed cooling fans, the primary source of noise is removed. Operating noise is usually below 65 dB, significantly improving the working environment-especially important in noise-sensitive areas (e.g., near office spaces within plants, hospitals, laboratories).
4. Reduced Air Conditioning Load & Systemic Energy Savings
Centralized Heat Exhaustion: The vast majority of heat generated by the VFD is carried away by the cooling water and can be transported via piping to be dissipated outdoors or handled by a central cooling system. This drastically reduces the heat emitted into the VFD control room, thereby significantly lowering or even eliminating the need for air conditioning and its associated energy consumption, achieving energy savings at the system level.
Primary System Diagram
Products Application
Renle RNMV3000 water cooled VFD is Suitability for Special Spaces & Demanding Applications
Enclosed Spaces: Ideal for installation in confined, poorly ventilated areas like control cabinets, ship engine rooms, and underground facilities.
Multi-Unit Side-by-Side Installation: When multiple VFDs are installed side-by-side in an electrical room, there is no risk of mutual hot air interference compromising cooling efficiency, allowing for more flexible layout.
High-Power Applications
Such as large-power compressors, pumps, fans, rolling mills, and hoists.
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Harsh Environments
Industrial sites with high levels of dust, fibers, moisture, corrosives, or heat.
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Space-Constrained Locations
Where installation space is compact and requires smaller equipment footprint.
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High Environmental Friendliness Requirements
Where strict control over noise and indoor cooling energy consumption is necessary.
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Extremely High Reliability Demands
Where equipment must operate stably and continuously for extended periods with minimal maintenance.
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