Medium Voltage VFD
Your Professional Medium Voltage VFD Supplier！
RENLE was founded in 1999 and has remained dedicated to the R&D, production,and sales ofelectrical equipment, committed to providing global customers with efficient,energy-saving, and stable industrial control solution.
Why Choose Us
Professional Team
The company insists on people-oriented and technological innovation, and the R&D team accounts for more than 30% of the total number of employees. Invested heavily in the introduction of a complete set of precision instruments and experimental equipment.
Sales Market
Our product Export United States, Vietnam, Japan, Britain, Italy, Russia, India, Brazil, Spain, the Middle East and other countries and regions.
Rich Experience
We has 20+ years of research, 120 Professional sales service, engineers / person and 35 Presence in /countries.
Medium Voltage VFD - Overview
A Medium Voltage Variable Frequency Drive (VFD) is a specialized electronic controller that adjusts the speed and torque of large, high-power industrial electric motors by varying the frequency and voltage of the power supplied to them. They operate on elevated voltage supplies, typically 2,300 to 6,600 volts (though ranges vary by manufacturer and application), and are used for motors of 500 horsepower or more to reduce current draw, improve efficiency, and enable soft-starting.
Product Specification
We offers the following product specifications：
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Name |
Item |
Specification |
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Input |
1000 Series Power |
3-phase 6kV/10kV, frequency: 50/60Hz |
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Supply |
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Input voltage range |
Voltage: -10% to +10%; Frequency: ±2% |
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Output |
1000 Series |
3-phase 6kV/10kV, frequency: 50/60Hz |
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Rated Voltage |
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Frequency |
0 j 50/60Hz |
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Modulation range |
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Setting resolution |
0.01 Hz |
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Overcurrent |
120% of rated output current for 1 minute every 10 minutes; |
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Capability |
150% of rated output current for instantaneous protection. |
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Control |
Control method |
V/F control with PG vector control and without PG vector control. |
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Synchronous |
The frequency converter follows the voltage phase and frequency of the power grid, achieving a state |
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Switching |
Of grid connection and smooth switching from frequency converter to power frequency without impact |
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Torque |
Automatic torque boost during startup to reach above 150%. |
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Compensation |
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Slip compensation |
Compensates for speed drop under load to enhance mechanical robustness. |
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Upper and lower |
Upper and lower frequency limits can be set. |
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Frequency limits |
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Skip frequency |
Skip frequency can be set in 3 groups. |
Advantages of Medium Voltage VFD
Energy Savings
One of the most significant advantages of medium-voltage variable-speed drives (MV VSDs) is their ability to reduce energy consumption. Compared to regular motors that stay at the same speed, MV VSDs can save up to 50% on energy costs by changing the motor speed to match the load.
Improved Process Control
MV VSDs provide precise motor speed and torque control, allowing for better process management in various applications. Whether in pumping, conveyor belts, or HVAC systems, these drives can automatically adjust motor speeds to match the required output. This level of control improves productivity, ultimately enhancing product quality and consistency.
Reduced Maintenance Costs
MV VSDs help prolong equipment life by minimizing mechanical stress on motors through controlled acceleration and deceleration. Operating at optimal speeds reduces wear and tear, lowering maintenance needs and fewer unexpected breakdowns. This can lead to increased uptime and decreased downtime, ultimately improving operational efficiency.
Longer Equipment Life
Motors' gradual ramping up and slowing down, facilitated by MV VSDs, significantly lowers the risk of mechanical failure. This not only extends the lifespan of the motors but also reduces the frequency of costly repairs and replacements. By operating the motor at its optimal speed, you minimize wear on components, leading to significant long-term cost savings.
Flexibility in Applications
MV VSDs are versatile and can be adapted for use in various applications across multiple industries. They can handle different loads and conditions, making them suitable for various processes—from industrial manufacturing to water treatment.
Lower Harmonic Distortion
Modern MV VSDs are designed with advanced filtering techniques that reduce harmonic distortion in electrical systems. This improves power quality, essential for sensitive equipment and compliance with regulatory standards.
Enhanced Safety Features
MV VSDs often have built-in safety features that protect personnel and equipment from electrical faults or overload conditions. These features enhance workplace safety while ensuring that operations run smoothly without interruptions.
Application
Power plant
Wind turbine / Compressor / Pumped hydro storage plant / Draft fan / Condensate pump / Circulating water pump / Boiler feedwater
Oil, Petrochemicals, Natural gas
Pipeline transfer pump / Injection pump / Feedwater pump / Submers-ible oil pump / Circulating water pump / Brine pump / Compressor /Booster fan / Oil transfer pump / Electric submersible pump, etc.
Coal, Mining
Scale removal pump / Slurry pump / Slag slurry pump / Clear water pump / Feed pump / Axial flow fan / Agitation pump / Kiln / Transmis-sion / Dust removal fan / Drainage pump / Media pump / Counter-ro-tating fan, etc.
Cement building materials
Kiln induced draft fan / Kiln forced draft fan / Kiln tail fan / Kiln head fan / Medium-temperature fan / Coal mill fan / Dust removal fan / Circu-lating fan / Raw material grinding fan / Cement grinding fan / Separa-tor fan / Pressure conveying fan, etc.
Steel and metallurgy
Blast furnace blower / induced draft fan / compression fan / air supply fan / feedwater pump / water supply pump / descaling pump /dust removal fan / converter / blast furnace / etc.
Installation Precautions
Ensure proper labeling of all control wires and cabling.
Ensure that the mounting strength meets the manufacturer's requirements.
Verify that the cabling and splices are in good condition by performing insulation resistance and power factor testing for long lead lengths.
Once the installation is complete the drive must be commissioned. This includes properly tuning the drive (for anything other than volts/hertz), both statically and dynamically, before coupling to the load. The direction of rotation should also be set. The load can then be coupled and the motor operated across the expected speed range, watching for resonance frequencies. These can be bypassed using the ‘jump frequencies' in the drive that will cause it to stay away from the frequencies that can damage the associated equipment. If the motor speed bounces around the load point, the gain can be adjusted to reduce the chance of significant torque ripples that can damage the motor and load.
Customization Process
Requirement Discussion
Contact us and provide your design drawings, size specifications, and other technical parameters.
01
Design Proposal
Our professional team will develop a design proposal and provide a quotation based on your requirements.
02
Sample Production
We produce samples according to the design proposal and conduct rigorous testing.
03
Mass Production
Upon your approval, we commence mass production to ensure timely delivery and consistent quality.
04
After-Sales Service
We offer ongoing technical support and service to ensure the long-term stable operation of our products.
05
Package & Delivery
Package: Standard export package or Custom
Delivery: By air express, by sea
FAQ
We're well-known as one of the leading medium voltage VFD manufacturers and suppliers in China. Please feel free to buy customized medium voltage VFD made in China here from our factory. For pricelist and quotation, contact us now.
High Voltage Drive, High Voltage VFD, Medium Voltage Variable Speed Drive